CSIR NET Life Science Unit 9 MCQs with Answers

Here below are 15 core Evolution and Diversity of Life Forms topics across five parts. Choose Easy, Medium or Difficult for each topic to practise 15 questions per level. Answers show the correct option and explanation immediately.

Part 1: Topics 1–3

1. Principles of Taxonomy and Systematics

15 questions per difficulty level · Select a level

2. Phylogenetics and Evolutionary Relationships

15 questions per difficulty level · Select a level

3. Bacteria and Archaea

15 questions per difficulty level · Select a level

Part 2: Topics 4–6

4. Viruses and Viroids

15 questions per difficulty level · Select a level

5. Protists and Algae

15 questions per difficulty level · Select a level

6. Fungi and Lichens

15 questions per difficulty level · Select a level

Part 3: Topics 7–9

7. Bryophytes and Early Land Plants

15 questions per difficulty level · Select a level

8. Pteridophytes and Seedless Vascular Plants

15 questions per difficulty level · Select a level

9. Gymnosperms

15 questions per difficulty level · Select a level

Part 4: Topics 10–12

10. Angiosperms and Floral Diversity

15 questions per difficulty level · Select a level

11. Animal Body Plans and Classification

15 questions per difficulty level · Select a level

12. Nonchordate Invertebrate Diversity

15 questions per difficulty level · Select a level

Part 5: Topics 13–15

13. Arthropods and Echinoderms

15 questions per difficulty level · Select a level

14. Chordates and Vertebrates

15 questions per difficulty level · Select a level

15. Biogeography Biodiversity and Conservation

15 questions per difficulty level · Select a level

Frequently Asked Questions

What is the difference between homologous and analogous structures?

Homologous structures share evolutionary ancestry, whereas analogous structures have similar functions without the same structural evolutionary origin.

Why are scientific names written as binomials?

A binomial combines a genus name and specific epithet to identify a species consistently.

What is a synapomorphy?

It is a shared derived character used to support a clade in phylogenetic analysis.

How do protostomes and deuterostomes differ?

They represent major bilaterian lineages with different evolutionary developmental patterns; simple blastopore rules have exceptions.

What makes a phylogenetic tree rooted?

A root identifies the ancestral direction of branching and enables interpretation of lineage divergence.

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