Tamil Nadu Board of Secondary EducationHSC Science Class 12th
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HSC Science Class 12th - Tamil Nadu Board of Secondary Education Question Bank Solutions for Zoology

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Zoology
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In which type of parthenogenesis are only males produced?

[0.01] Reproduction in Organisms
Chapter: [0.01] Reproduction in Organisms
Concept: Types of Reproduction

The mode of reproduction in bacteria is by ____________.

[0.01] Reproduction in Organisms
Chapter: [0.01] Reproduction in Organisms
Concept: Types of Reproduction

In which mode of reproduction variations are seen?

[0.01] Reproduction in Organisms
Chapter: [0.01] Reproduction in Organisms
Concept: Types of Reproduction

Assertion and reasoning question:

In the following question there are two statements. One is assertion (A) and other is reasoning (R). Mark the correct answer

(A) Assertion: In bee society, all the members are diploid except drones.

(R)Reason: Drones are produced by parthenogenesis.

[0.01] Reproduction in Organisms
Chapter: [0.01] Reproduction in Organisms
Concept: Types of Reproduction

Assertion and reasoning question:

In the following question there are two statements. One is assertion (A) and other is reasoning (R). Mark the correct answer

(A) Assertion: Offsprings produced by asexual reproduction are genetically identical to the parent.

(R) Reason: Asexual reproduction involves only mitosis and no meiosis.

[0.01] Reproduction in Organisms
Chapter: [0.01] Reproduction in Organisms
Concept: Types of Reproduction

Name an organism where cell division is itself a mode of reproduction.

[0.01] Reproduction in Organisms
Chapter: [0.01] Reproduction in Organisms
Concept: Types of Reproduction

Which type of reproduction is effective - Asexual or sexual and why?

[0.01] Reproduction in Organisms
Chapter: [0.01] Reproduction in Organisms
Concept: Types of Reproduction

The mature sperms are stored in the ____________.

[0.02] Human Reproduction
Chapter: [0.02] Human Reproduction
Concept: Human Reproductive System

The male homologue of the female clitoris is ____________.

[0.02] Human Reproduction
Chapter: [0.02] Human Reproduction
Concept: Human Reproductive System

What is inhibin? State its functions.

[0.02] Human Reproduction
Chapter: [0.02] Human Reproduction
Concept: Human Reproductive System

Mention the importance of the position of the testes in humans.

[0.02] Human Reproduction
Chapter: [0.02] Human Reproduction
Concept: Human Reproductive System

What is the composition of semen?

[0.02] Human Reproduction
Chapter: [0.02] Human Reproduction
Concept: Human Reproductive System

Which of the following is not correct?

[0.04] Principles of Inheritance and Variation
Chapter: [0.04] Principles of Inheritance and Variation
Concept: Extensions of Mendelian Genetics (Deviation from Mendelism) > Multiple Alleles

The first life on earth originated ____________.

[0.06] Evolution
Chapter: [0.06] Evolution
Concept: Theories of Origin of Life

List out the major gases that seem to be found in the primitive earth.

[0.06] Evolution
Chapter: [0.06] Evolution
Concept: Theories of Origin of Life

Malaria caused by Plasmodium is transmitted through ____________.

[0.07] Human Health and Diseases
Chapter: [0.07] Human Health and Diseases
Concept: Common Diseases in Human Beings

A 30 year old woman has bleedy diarrhoea for the past 14 hours, which one of the following organisms is likely to cause this illness?

[0.07] Human Health and Diseases
Chapter: [0.07] Human Health and Diseases
Concept: Common Diseases in Human Beings

Which of the following disease is spread through droplet nuclei?

[0.07] Human Health and Diseases
Chapter: [0.07] Human Health and Diseases
Concept: Common Diseases in Human Beings

Exo-erythrocytic schizogony of Plasmodium takes place in ____________.

[0.07] Human Health and Diseases
Chapter: [0.07] Human Health and Diseases
Concept: Common Diseases in Human Beings

The sporozoites of Plasmodium vivax are formed from ________.

[0.07] Human Health and Diseases
Chapter: [0.07] Human Health and Diseases
Concept: Common Diseases in Human Beings
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