Sets
Biology Set 21
30 questions 1. The protein-rich layer that replaces the cell wall in euglenoids and makes their body flexible is called:
2. Consider the following pairs:
(I) Plasmogamy – Fusion of protoplasms
(II) Karyogamy – Fusion of two nuclei
(III) Dikaryon – Cell with a single diploid nucleus
Which of the pairs given above is/are correctly matched?
3. The Indian ornithologist referred to as the 'Birdman of India' is:
4. The pacemaker of the human heart is the:
5. Undisturbed patches of forest protected by the local community, found all over India and home to numerous medicinal plants, are called:
6. The formation of different types of tissues leads to:
7. Sexual reproduction generates more variation than asexual reproduction because it involves:
8. Each gene set is present as separate independent pieces, each called a:
9. After pollen lands on a suitable stigma, the pollen tube grows through the:
10. The cell organelles that contain chlorophyll are:
11. Eukaryotic cells divide in an orderly and controlled manner by a process called the:
12. The rough endoplasmic reticulum is continuous with:
13. The tissue system that forms the outer covering of the plant and reduces water loss is the:
14. The Indian variety of the pitcher plant is:
15. The 'Shuchi Scheme' for distributing sanitary pads in government schools is a programme of:
16. The Na⁺/K⁺ pump is an example of:
17. Consider the following pairs:
(I) Rhizopus – Phycomycetes
(II) Neurospora – Basidiomycetes
(III) Alternaria – Deuteromycetes
Which of the pairs given above is/are correctly matched?
18. The rigid matrix of bone contains compounds of:
19. Assertion (A): Roots stop growing in length when their tips are cut.
Reason (R): Roots grow only from their tips, where cells divide continuously.
20. Apart from carbon dioxide, yeast produces a small amount of: