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Authors Chapters

A. Aravinth M.Sc., - 5,6

M. Deepa M.Sc., PGDIW -2,4,11,12,13 & WWT., PGDCR., DMLT.

S. Angel SubyM.Sc., BLS., PGDCA. - 7, 8

R. Jeya Saroj Bagya Rose - 10

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CHAPTER

PAGE NO

1 Reproduction in Organisms

-2

Human Reproduction

1 - 3

3 Reproductive Health

-4

Principles of Inheritance and Variation

4 - 12

5 Molecular Genetics

12 - 13

6 Evolution

14 - 19

7 Human Health and Diseases

20 - 23

8 Immunology

24 - 34

9 Microbes in Human Welfare

-10

Applications of Biotechnology

35 - 44

11 Organisms and Population

45 - 50

12 Biodiversity and its Conservation

50 - 54

13 Environmental Issues

54 - 54

Zoology and Bio-Zoology have the same

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zool-ogy. The additional topics for Zoology are given

(5)

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CH.1: Asexual and Sexual Reproduction _SaraS_Publication1 Biosciences Book Publisher

1 Z o o lo g y

Book Back Solved Questions - 1 Mark

1. Painful menstruation is termed as

a. Dysmenorrhoea b. Menorrhagia c. Amenorrhoea d. Oligomenorrhoea

Book Back Solved Questions - 2 Marks

1. List the various menstrual disorders.

1. Amenorrhoea 4. Menorrhagia 2. Polymenorrhoea 5. Oligomenorrhoea 3. Dysmenorrhoea

Additional Solved Questions - 1 Mark

1. a. Dysmenorrhoea 1. c. 35 days

2. d. Permanent cessation of primary

functions of uterus

a. Oestrogen b. Prostaglandin c. Oxytocin d. Progesterone

4. Secondary dysmenorrhoea is caused

due to …….. a. Endometriosis b. Frequent ovulation c. STD

d. Malnutrition

5. Which is not a menstrual disorder?

a. Amenorrhoea b. Menarche c. Dysmenorrhoea d. Oligomenorrhoea

1. Oligomenorrhoea is a condition

where menstruation does not occur for more than

a. 50 days b. 60 days c. 35 days d. 45 days

2. Menorrhagia is a condition not due to

a. Hormonal imbalance b. Uterine fibroids c. Cancer of ovary

d. Permanent cessation of primary functions of uterus

3. Primary dysmenorrhoea is caused by

……. secretion in the uterus

3. b. Prostaglandin 4. a. Endometriosis 5. b. Menarche

Human Reproduction

2

(7)

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4 Z o o lo g y

1. Who first studied genic balance of sex determination in Drosophila?

a. C.B. Bridges b. Mary Lyon c. Duchenne

d. John cotto

Additional Solved Questions - 1 Mark

2. In Drosophila, the gene for male-ness is located on the

a. X Chromosome b. Y - Chromosome

c. Autosomes d. None of the above

3. Sex index in Drosophila is expressed as

a. Sex index = Number of Y chromosomes Number of sets of autosomes b. Sex index = Number of X Chromosomes

Number of sets of autosomes c. Sex index = Number of Y chromosomes

Number of sets of allosomes d. Sex index = Number of X chromosomes

Number of sets of allosomes

4. When X : A ratio is greater than 1:00,

the Drosophila is

a. Normal male b. Intersex c. Female d. Metamale

5. When X : A ratio is 0.50 or less than

0.50, the Drosophila is

a. Metamale b. Metafemale c. Intersex d. Male

6. When X : A ratio is 0.67, the

Droso-phila is

a. Intersex b. Metamale

c. Metafemale d. Normal male

7. When X : A ratio is 0.33, the

Droso-phila is

a. Intersex b. Metamale c. Metafemale d. Normal male

8. What is the sex ratio (X : A) of

meta-females in Drosophila. a. 1.00 b. 0.67 c. 1.50 d. 0.33

9. Who discovered X chromosome?

a. Henking b. Stevens

1. a. C.B. Bridges 2. c. Autosomes

3. b. Sex index = Number of X chromosomes

Number of sets of autosomes 4. c. Female 5. d. Male 6. a. Intersex 7. b. Metamale 8. c. 1.50

Principles of Inheritance

and variation

(8)

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6 Z o o lo g y

1. Where are the genes for femaleness and maleness located in Drosophila.

1. Genes for femaleness are located in the X - chromosome.

2. Genes for maleness are located on the autosomes.

2. What is sex index?

Sex index is the ratio of X

chromo-some to that of the autochromo-some sets in Drosophila.

Additional Solved Questions - Two Marks

3. Name the organism which is made up of tissues of male and female genotype. Explain it.

Gynandromorphs

1. These organisms are made up of

tissues of male and female genotype.

2. The tissues represent a mosaic

pat-tern.

3. Some parts of the body express

male characters and other parts exhibit female characters.

4. Which rule states the number of Barr bodies in an organism?

N - 1 rule (N minus one rule) gives

the number of Barr bodies.

Here, ‘N’ is the total number of X

-chromosomes.

5. What are the types of shell coiling seen in Lymnaea?

1. Dextral coiling - clockwise coiling 2. Sinistral coiling -Anticlockwise coiling

6. How is shell coiling produced in Lymnaea?

The two types of coilings are pro-duced by two different types of

ge-netically controlled cleavages, such as

1. Dextral cleavage 2. Sinistral cleavage

Sex index = Number of X chromosomes X Number of Autosome sets = A

Dextral cleavage produces dextral

coiling.

Sinistral cleavage produces sinistral

coiling.

7. Name the normal and mutant coil-ing characters in Lymnaea.

Dextral coiling is the normal

char-acter.

Sinistral coiling is the mutant

char-acter.

8. What are kappa particles?

Cytoplasmic symbionts occurring in

some strains of ciliated Paramecium They are either parasites or

sym-bionts.

They secrete a toxin called

paramecin.

They are present in the killer strains of Paramecium

9. Define “Killer Paramecia”.

Strains possessing the Kappa particles are called killer Paramecia.

10. Define eugenics.

Application of the laws of genetics for the improvement of human race.

The term was coined by Francis

(9)

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10 Z o o lo g y

In both the crosses, the phenotype of F1 generation were similar to the

female parent.

But, the genotypes in both crosses were Dd.

It is because the genotype of

ma-ternal parent determines the pheno-type of the offspring.

When the F1 individuals of recip-rocal cross (Sinistral individuals) were self crossed, the offspring in F2

gen-eration were all dextral.

This is because the genes do not

segregate in the F2 generation.

Segregation occurs only in the F3 generation.

The offspring in the F3 generation is in the ratio of 3 dextral : 1 sinistral.

2. What are the symbionts present

in-side Paramecium? Explain them.

Symbionts in Paramecium

Kappa particles

Kappa Particles

Kappa particles are cytoplasmic symbionts occurring in ciliated

parame-cium.

Strains of Paramecium possessing kappa particles are called “Killer

Para-mecia”.

Paramecin, is a toxin liberated by

kappa particles.

This toxin is lethal to other indi-viduals.

These individuals are called

sensitives.

The sensitives have no kappa particles. Kappa particles appear either as

Parasites (or) Symbionts

A killer Paramecium contains

hun-dreds of kappa particles.

It resembles the bacterium,

Caedobacter taeniospiralis.

These particles have their own DNA. They are dependent on the

domi-nant nuclear gene ‘K’ for their presence

in killer Paramecium.

Paramecia with nuclear genotype

‘kk’ do not produce kappa particles.

The inheritance of killer trait does not follow the Mendelian pattern of inheritance.

Sonneborn and his associates

re-ported the transmission of kappa par-ticles.

3. Mention the types of kappa particles.

Explain them.

Kappa particles appear in 2 forms : N form

B form

N form is the infective form.

This form passes from one

Para-mecium to another.

This form confers the killer

speci-ficity to the host cell.

N form is attacked by a bacterio-phage.

This induces the formation of

inclu-sions called ‘R’ bodies inside the kappa particles.

This converts the N form to B form. The B form has R bodies.

These kappa particles cannot

(10)

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12 Z o o lo g y

Dominant chromosomal genes (KK)

are required to maintain cytoplasmic kappa particles.

If a dominant gene is absent, kappa particle would disappear from the cy-toplasm of host.

4. Tabulate different doses of X chromosomes and autosomes in Drosophila

along with their effect on sex determination. Phenotype Metafemale/Superfemale Normal Female Inter sex Normal Female

Meta male / Super male

Number of ‘X’ Chromosomes (X) 3 4 3 2 1 2 1 1 Number ofAu-tosome sets (A)

2 4 3 2 1 3 2 3 Number of X Sex Index = chromosome

Number of autosome sets 3/2 = 1.5 4/4 = 1.0 3/3 = 1.0 2/2 = 1.0 1/1 = 1.0 2/3 = 0.67 1/2 = 0.50 1/3 = 0.33 Tetraploid Triploid Diploid Haploid

1. The blotting technique used for DNA

finger printing is

a. Northern b. Southern c. Western d. Eastern

2. DNA fragments are separated into

bands of different sizes by

a. PCR b. ELISA

c. Electrophoresis d. Blotting

3. In DNA fingerprinting DNA

frag-ments are denatured by a. Heating b. Icing c. Acidifying e. Salting

1. What is DNA hybrid?

The paired complementary strands of two parental DNA.

2. What are the techniques used in

DNA fingerprinting? 1. Genetic Engineering 2. Electrophoresis

Additional Solved Questions - 2 Marks

1. b. Southern 2. c. Electrophoresis 3. a. Heating

3. Southern blotting 4. DNA hybridization 5. Auto radiography

3. What is DNA fingerprint?

X ray image of bands of hybrid DNA is called DNA fingerprint.

Molecular Genetics

5

(11)

SAMPLE PAGES

14 Z o o lo g y

1. List out the three levels of impact of

extinction of species.

The three levels of impact of extinc-tion of species are :

1. Species extinction 2. Mass extinction 3. Global extinction

2. Explain species extinction.

An entire species gets eliminated by: 1. Environmental events like

flood, etc.

2. Biological events like disease, non availability of food,

re-sources, etc.)

3. Write notes on mass extinction.

Half or more species in a region or ecosystem gets eliminated.

Five major mass extinctions has

oc-curred since Cambrian period.

This extinction is also called K - T

extinction.

These extinctions occur due to

fac-tors like - Volcanic eruption

4. Describe Global extinction.

This type of extinction eliminates:

Most of the species on a large

scale

Larger taxonomic groups in the continent or earth.

The following are the causes for glo-bal extinction:

Snowball earth CO₂elevation

These extinctions has lead to the following:

Opening up of new habitats Facilitate the radiation of

organisms that survived mass

extinction.

5. Define isolating mechanism.

Separation of the members of a single population into sub populations by iso-lating barriers is called isolation or isolating mechanisms.

The sub populations maintain genetic

integrity.

6. List out the types of isolating

mecha-nisms.

The isolating mechanisms are grouped into two types. They are:

1. Prezygotic isolation 2. Postzygotic isolation

Prezygotic isolation includes the fol-lowing: 1. Ecological isolation 2. Seasonal isolation 3. Ethological isolation 4. Morphological isolation 5. Physiological isolation 6. Cytological isolation

Postzygotic isolation includes the fol-lowing:

1. Hybrid sterility isolation 2. Hybrid inviability isolation 3. Hybrid breakdown isolation

Book Back Solved Questions-2 Marks

Evolution

(12)

SAMPLE PAGES

20 Z o o lo g y

Book Back Solved Questions - One Mark

Human Health and

Diseases

7

1. d) Mosquito bites 2. c) Chicken pox 3. b) Oral 4. a) Dried leaves and flowers of hemp plant 5. c) A toxin from Plasmodium species

6. a) Hallucinogen 7. b) I-3, II-5, III-4, IV-2

I. Choose the Correct Answers

1. Malaria caused by Plasmodium is

transmitted

through---a) Air b) Contact

c) Fleas on food d) Mosquito bites

2. Which of the following diseases is

spread through droplet nuclei? a) Tularemia b) Listeriosis c) Chicken pox d) Mumps

3. Poliomyelitis which causes infantile

paralysis enters the body through ---a) Skin b) Oral

c) Ears d) Eyes

4. Marijuana is extracted from

a) Dried leaves and flowers of hemp plant.

b) Ergot fungus

c) Roots of hemp plant d) Cocoa plant

5. Haemozoin is

a) A precursor of haemoglobin. b)A toxin from Streptococcus. c) A toxin from Plasmodium species. d) A toxin from Haemophilus spe-cies.

6. The drug synthesised from Datura

is

a) Hallucinogen b) Depressant c) Stimulant d) Pain killer

7. Match the pathogens with respective diseases caused by them and select the

correct match using the codes given below.

I. Leishmania donavani - 1. Malaria II. Wuchereria bancrofti - 2. Amoebiasis III. Trypanosoma gambiense - 3. Kala - azar

IV. Entamoeba histolytica - 4. Sleeping sickness 5. Filariasis Codes I II III IV a) 1 4 2 3 b) 3 5 4 2 c) 3 5 2 4 d) 1 4 3 2

(13)

SAMPLE PAGES

24 Z o o lo g y

Immunology

8 I. Choose the Correct Answers

1. Colostrum provides

a. Naturally acquired active immunity b. Naturally acquired passive immunity c.Artificially acquired active immunity d.Artificially acquiredpassive immunity

2. Paratope is an

a. Antibody binding site on variable regions

b. Antibody binding site on heavy re-gions

c. Antigen binding site on variable regions

d. Antigen binding site on heavy re-gions

3. Allergy involves

a. IgE b. IgG

c. lgA d. IgM

4. Anaphylactic shock is due to

a. Allergic reaction b. Secretion of toxins c. Secretion of histamines d. All the above

5. Spread of cancerous cells to distant

sites is termed as

a. Metastasis b. Oncogenes c. Proto-oncogenes

d. Malignant neoplasm

6. AIDS virus has

a) Single stranded RNA b) Double stranded RNA c) Single stranded DNA d) Double stranded DNA

7. All are peripheral lymphoid organs

except

a) Lymph nodes b) Spleen

c) Mucosa associated lymphoid tissue d) Thymus

8. Which is not a macrophage?

a) Monocyte b) Microglia c) Kupffer cell d) Lymphocyte

9. True about interferon is that

a) It is synthetic antiviral agent b) It inhibits viral replication in cells c) It is specific for a particular virus d) It causes infection

10. Cell mediated immunity is carried

out by... while humoral immu-nity is mainly carried out by

a) B cells/T cells b) Epitopes/antigens c) T cells/B cells d) antibodies/antigens

11. B Cells are activated by

a. Complement b. Antibody c. Interferon d. Antigen

Book Back Solved Questions - One Mark

1. b. Naturally acquired passive immunity 2. c. Antigen binding site on

vari-able regions 3. a. IgE 4. a. Allergic reaction 5. a. Metastasis 6. a) Single stranded RNA 7. d) Thymus 8. d) Lymphocyte

(14)

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26 Z o o lo g y

4. It occurs by phagocytosis and 4. It occurs mainly by production of

lysis of pathogen. antibodies to neutralise the antigens.

5. It does not produce any memory 5. It produces memory to act during secondary response.

6. Example: Tears in eye destroy 6. Example: Vaccination gives

resist-pathogens. ance by producing antibodies.

4. Tabulate the difference between primary and secondary immune responses. Sl. No. 1. 2. 3. 4. 5.

Primary Immune Response

It occurs as a result of primary

contact with an antigen.

Antibody level reaches peak in 7 to 10 days.

Prolonged period is required to

establish immunity

There is rapid decline in anti-body level.

It appears mainly in the lymph

nodes and spleen.

Secondary Immune Response

It occurs as a result of second and subsequent contacts with the same antigen.

Antibody level reaches peak in 3 to 5 days.

It establishes immunity in a short

time

Antibody level remains high for longer period.

It appears mainly in the bone

marrow, followed by the spleen

and lymph nodes.

5. Tabulate the difference between active and passive immunity? Sl. No. 1. 2. 3. 4. 5. 6. Active Immunity

Active immunity is produced ac-tively by host’s immune system. It is produced due to contact with

pathogen or by its antigen.

It is durable and effective in pro-tection.

Immunological memory is present

Booster effect on subsequent

dose is possible

Immunity is effective only after a short period.

Passive Immunity

Passive immunity is received

pas-sively and there is no active host

participation.

It is produced due to antibodies obtained from outside.

It is transient and less effective.

No memory.

Subsequent dose is less effective.

(15)

SAMPLE PAGES

29 Z o o lo g y d) Acquired immunity 8. Skin is an a) Anatomical barrier b) Physiological barrier c) Phagocytic barrier d) Inflammatory barrier

9. Which among the following is

anti-bacterial?

a) Interferon b) Lysozyme c) Hormone d) Protein

10. Which of the following is antiviral?

a) Interferon b) Lysozyme c) Protein d) Hormone

11. Identify the phagocytic cells from

the following combinations. a) Macrophage and eosinophil b) Lymphocyte and eosinophil c) Macrophage and neutrophil d) Eosinophil and neutrophil

12. Histamine is secreted by

a) Epithelial cells b) Mast cells

c) Red blood cells d) White blood cells

13. Humoral community consists of

a) Normal cells b) Pathological cells c) Cytotoxic cells

d) Immunoglobulin molecules

14. Which of the following secretes

immunoglobulin.

a) T-lymphocyte b) B-lymphocyte c) Macrophage d) Mast cells

15. The H-chain of immunoglobulin has

a molecular weight

a) Equivalent to that of light chain b) Twice that of light chain

c) Triple the amount of light chain d) Twice as that of heavy chain

16. Hyper variablity regions are present in

a) Heavy chains only b) Light chain only

c) Heavy and light chains d) Dark chain only

1. Name the cells that produce

antibod-ies.

B-cells, Plasma cells

2. How do neutrophils acts as a cellular

barrier to pathogens in human?

Neutrophils carry out phagocytosis and destroy pathogenic microbes.

Additional Solved Questions - Two Marks

3. What are plasma cells?

1. The plasma cells produce

antibod-ies.

2. They are produced by the

divi-sion of activated B-Cells.

3. B-cells are activated by antigen. 4. They are involved in humoral

im-munity.

8. a) Anatomical barrier 9. b) Lysozyme 10. a) Interferon 11. c) Macrophage and neutrophil 12. b) Mast cells 13. d)

Immunoglo-bulin molecules 14. b) B-lymphocyte 15. b) Twice that of light chain 16. c) Heavy and light chain

(16)

SAMPLE PAGES

33 Z o o lo g y

2. Acidity of gastric secretions (HCl)

kills ingested microbes.

5. How chemical mediators protect our

body?

Chemical mediator is a

physiologi-cal barrier.

Lysozyme acts as antibacterial

agent and cleaves the bacterial cell

wall.

Interferons induce antiviral state

in the uninfected cells.

Complementary substances pro-duced from leucocytes lyse the patho-genic microbes.

6. What are the cells which function as

phagocytic barriers?

Monocytes Neutrophils

Tissue macrophages

They are barriers of innate immunity They phagocytose and digest whole

microorganisms.

7. Write notes on inflammatory

barri-ers

Tissue damage and infection induce

leakage of vascular fluid.

Vascular fluid contains the follow-ing chemotactic signals:

Serotonin Histamine Prostaglandins

They influx the phagocytic cells into the affected area. This phenomenon is called diapedesis.

8. (i) Which gland filters and traps patho-gens.

(ii) Explain it structure with a neat dia-gram.

(i) Name of the Gland Lymph Node

(ii) Structure of Lymph Node Lymph node is a secondary

lym-phoid organ.

Bean shaped glands.

Hundreds in the body.

Lymph nodes are connected by

lymph vessels.

The lymph nodes recieve lymph through afferent lymphatic vessels.

Lymph is taken away by an

effer-ent lymphatic vessesl.

Lymph nodes are packed tightly with white blood cells such as lympho-cytes.

It has three zones:

Cortex Paracortex Medulla

Cortex is the outermost layer. It consists

of-B-lymphocytes Macrophages

Follicular dendritic cells

Paracortex is the layer beneath the

cortex.

It is richly populated by

T-lympho-cytes and dendritic cells.

Medulla is the innermost layer. It is sparsely populated by

lympho-cytes and many of them by plamsa cells.

(17)

SAMPLE PAGES

CH.1: Asexual and Sexual Reproduction 35

35

SaraSPublicationBiosciences Book Publisher

C H .1 0 :A p p li ca ti o n s o f B io te ch n o lo g y

Book Back Solved Questions- One Mark

a) Genome Engineering Action Com-mittee

b) Ground Environment Action Com-mittee

c) Genetic Engineering Approval Com-mittee

d) Genetic and Environmental Ap-proval

5. How many amino acids are arranged

in the two chains of Insulin?

a) Chain A has 12 and Chain B has 13 b) Chain A has 21 and Chain B has 30 amino acids

c) Chain A has 20 and Chain B has 30 amino acids

d) Chain A has 12 and Chain B has 20 amino acids

6. PCR proceeds in three distinct steps

governed by temperature, they are in order of

a) Denaturation, Annealing, Synthesis b) Synthesis, Annealing, Denaturation c) Annealing, Synthesis, Denaturation d) Denaturation, Synthesis, Annealing

Applications of

Biotechnology

10 I. Choose the Correct Answers

1. The first clinical gene therapy was

done for the treatment of

a) AIDS b) Cancer

c) Cystic fibrosis d) SCID

2. Dolly, the sheep was obtained by a

technique known as

a) Cloning by gene transfer

b) Cloning without the help of gametes c) Cloning by tissue culture of somatic

cells

d) Cloning by nuclear transfer

3. The genetic defect adenosine

deami-nase deficiency may be cured perma-nently by

a) Enzyme replacement therapy b) Periodic infusion of genetically en-gineered lymphocytes having ADA cDNA

c) administering adenosine deaminase activators

d) Introducing bone marrow cells pro-ducing ADA into embryo at an early stage of development.

4. GEAC stands for

1. c) Cystic fibrosis 2. d) Cloning by nuclear transfer 3. a) Enzyme re-placement therapy 4. c) Genetic Engineering Approval Committee

5. b) Chain A has 21 and Chain B has 30 amino acids 6. a) Denaturation, An-nealing, Synthesis

(18)

SAMPLE PAGES

45

Z o o lo g y

Book Back Solved Questions- 2 Marks

Organisms and

Population

11

I. Choose the Correct Answers

2. Explain parasitism.

1. It is a harmful interaction between

two species. (+,- interaction).

2. One species is the parasite. 3. The other is the host.

1. Tabulate the analysis of two species population interaction.

S.No Types of Species Species General nature Examples Interaction 1 2 of interaction

1 Amensalism - O The most powerful Cat and Rat

animal or large orga-nism inhibits the growth

of other lower organisms

2 Mutualism + + Interaction favourable to Between

cro-both and obligatory. codile and bird

Book Back Solved Questions- 5 Marks

1. Differentiate between predator and prey.

Predator Prey

1. Predator is benefited. 1. Prey is affected (killed). 2. Larger than the prey. 2. Smaller than the predator. 3. It kills other animals (prey) for 3. It is killed by a predator.

food.

4. It catches its prey from outside its 4. It consumes its food from inside/

body. outside its body.

5. Lion is a predator. 5. Deer is a prey.

4. The parasite lives in or on the host. 5. The parasite benefits at the ex-pense of the host.

6. The parasite derives the following from its host:

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49

Z o o lo g y

Additional Solved Questions - 3 Marks

1. Write about the principle proposed by Hardin regarding interaction be-tween organisms?

The principle proposed by Hardin is

competitive exclusion principle.

According to this principle:

1. Competition does not occur, if

the resources are more than adequate.

2. But, when resources are

inad-equate to satisfy the needs of

organ-isms, competition occurs.

3. The weakest, least adapted and

least aggressive individuals face

chal-lenges.

Additional Solved Questions - 5 Marks

1. (i) Which interaction is represented by (+, O).

(ii) Illustrate this with barnacles and egrets.

(i) Commensalism (+, O) (ii) 1. Barnacles and Whales

Barnacles are benefited from the interaction-Commensalism.

It is a (+, O) interaction.

They remain attached to the body of whales.

They travel thousands of miles

on the body of whale free of cost. During the travel, they collect and

filter food from the moving water.

But, whales are neither benefited nor harmed from this interaction.

2. Egrets and Cattle

It is an interaction of

commensal-ism.

Egrets are usually present near on

cattle.

They get benefited by consuming

insects present on the body of cattle.

But the cattles are not affected. It is a (+, O) interaction.

2. Tabulate the analysis of the following: (i) Commensalism

(ii) Competition (i) Commensalism

Species 1 Species 2 General nature of interaction Examples

+ O Species 1-Commensal benefited Sucker fish on

and species 2, the host is not shark.

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Z o o lo g y 50

Species 1 Species 2 General nature of interaction Examples

- - Direct inhibition of each species Birds compete

by the other with squirrels

for nuts and seeds

(ii) Competition

Biodiversity and its

conservation

12 Additional Questions - 1 Mark

1. WWF aims at ………

a) Preserving genetic materials b) Reducing human impact on the environment

c) Providing loans for dairy and poul-try farming

d) Performing zoological survey.

2. The full form of CITES is

a) Conservation of International Trade in Endangered species

b) Communities and individual Trade Establishment Service

c) Convention on International Trade in Endangered Species. d) Conservation of International Exsitu Sites.

3. When did CITES come into force?

a) June 1965 b) July 1975 c) August 1969 d) September 1978

1. b) Reducing human impact on the environment 2. c) Convention on

Inter-national Trade in Endangered Species. 3. b) July 1975 4. c) 1916 5. d) Kalakad-Mundanthurai Tiger reserve 6. a) Brazil 7. d) Biological Diversity Act

4. When was ZSI established?

a) 1910 b) 1914 c) 1916 d) 1912

5. Where is FREEP conducting pilot

eco-development programme? a) Periyar Sanctuary

b) Mudumalai National park c) Kaziranga national park

d) Kalakad-Mundanthurai Tiger re-serve.

6. Where was convention on

Biologi-cal Diversity held in1992?

a) Brazil b) Argentina c) Germany d) India

7. Which act was implemented by Na-tional Biodiversity Authority?

a) Prevention of cruelty to Animals Act

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12th Botany

Pure Science

Long Version

Both [English & Tamil medium]

Line by Line Solved Questions

Book Back Solved Questions

This book contains Two Supplement Books

Short Answer Book

Definitions - tiuaiwfs; Differences - NtWghLfs; Discoveries - fz;Lgpbg;Gfs;

Do you know questions - cq;fSf;F njhpAkh tpdh tpilfs; Days of Importance - Kf;fpa jpdq;fs;

Diagrams - tiuglq;fs; Flow charts - Xl;l tpsf;f glq;fs; Laws and Theories - tpjpfs; kw;Wk; Nfhl;ghLfs;

Abbreviations - RUf;fq;fs; For Memory - epidtpy; epWj;j

Question Bank Book

Unit Test Question Papers - Chapterwise - myFj; Njh;T tpdhf;fs; - ghlk; thhpahf Assessment Test Question Papers - kjpg;gPl;L Njh;T tpdhj;jhs;fs;

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