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ISC (Science) ISC Class 12 - CISCE Important Questions for Biology (Theory)

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विषय
मुख्य विषय
अध्याय
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Biology (Theory)
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Briefly describe the process of spermatogenesis.

Appears in 4 question papers
Chapter: [3] Human Reproduction
Concept: Gametogenesis

Write the complete name of the diagnostic test for AIDS.

Appears in 3 question papers
Chapter: [4] Reproductive Health
Concept: Sexually Transmitted Diseases (STD) or Sexually Transmitted Infections (STI)

State any three goals of the human genome project.

Appears in 3 question papers
Chapter: [6] Molecular Basis of Inheritance
Concept: Human Genome Project

List any three major causes of loss of biodiversity.

Appears in 3 question papers
Chapter: [17] Biodiversity and Its Conservation
Concept: Loss of Biodiversity

Define Parthenocarpy

Appears in 2 question papers
Chapter: [2] Sexual Reproduction in Flowering Plants
Concept: Significance of Seed Dispersal and Fruit Formation

Define Spermatogenesis.

Appears in 2 question papers
Chapter: [3] Human Reproduction
Concept: The Male Reproductive System

Expand the following: 

ZIFT

Appears in 2 question papers
Chapter: [4] Reproductive Health
Concept: Infertility

The following is well-known abbreviation, which have been used in this chapter. Expand to its full form:

NACO

Appears in 2 question papers
Chapter: [4] Reproductive Health
Concept: Sexually Transmitted Diseases (STD) or Sexually Transmitted Infections (STI)

What is adaptive radiation?

Appears in 2 question papers
Chapter: [8] Evidences and Theories of Biological Evolution
Concept: Adaptive Radiation

State Hardy Weinberg's principle.

Appears in 2 question papers
Chapter: [8] Evidences and Theories of Biological Evolution
Concept: Hardy Weinberg’s Principle

Name and explain the technique used for separating DNA fragments and making them available for biotechnology experiments.

Appears in 2 question papers
Chapter: [13] Principles and Processes of Biotechnology
Concept: Principles of Biotechnology

Define Niche. 

Appears in 2 question papers
Chapter: [15] Organisms and Populations
Concept: Population Interactions

 Define the Standing crop.

Appears in 2 question papers
Chapter: [16] Ecosystem
Concept: Ecological Services

Give a graphic representation of the phosphorus cycle in nature (ecosystem).

Appears in 2 question papers
Chapter: [16] Ecosystem
Concept: Biogeochemical Cycles (Nutrient Cycles)

What is Red Data Book?

Appears in 2 question papers
Chapter: [17] Biodiversity and Its Conservation
Concept: Biodiversity

What is symbiosis?

Appears in 1 question paper
Chapter: [1] Reproduction in Organisms
Concept: Reproduction

Explain the term perianth.

Appears in 1 question paper
Chapter: [1] Reproduction in Organisms
Concept: Reproduction

Give the biological name of the following:

Baker’s yeast

Appears in 1 question paper
Chapter: [1] Reproduction in Organisms
Concept: Modes of Reproduction >> Asexual Reproduction

State two advantages of vegetative propagation.

Appears in 1 question paper
Chapter: [1] Reproduction in Organisms
Concept: Modes of Reproduction >> Asexual Reproduction

Give two differences between heartwood and sapwood.

Appears in 1 question paper
Chapter: [1] Reproduction in Organisms
Concept: Reproduction
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