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Biology — Tier 3

Genetics, cell biology, physiology, ecology, and evolution for Classes XI–XII

Sample Practice Questions

Which phenomenon causes some traits to be inherited together?
- Dominance
- Genetic linkage
- Mutation
- Codominance
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Answer: Genetic linkage
Which hormone primarily maintains pregnancy?
- Oestrogen
- Progesterone
- HCG
- Prolactin
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Answer: Progesterone
Complement system is part of:
- Adaptive immunity
- Innate immunity (non-specific defence)
- Allergic response only
- Autoimmune response
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Answer: Innate immunity (non-specific defence)
Which type of cell junction prevents material from passing between cells?
- Gap junction
- Tight junction
- Desmosome
- Plasmodesmata
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Answer: Tight junction

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Practice Questions

Practise NGSE questions on Biology — Tier 3. Answers are revealed after each question.

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