Biology Set 20 FAQs

1. Amphioxus belongs to:

2. Which of the following is a junk food?

3. Which of the following plants has fibrous roots?

4. Spindle-shaped, non-striated muscle cells with a single nucleus are found in the:

5. The protein content of Spirulina is more than ______ of its body weight.

6. The approximate length of the DNA thread in a single human cell is:

7. Consider the following statements: (I) Some nutrients like vitamin C are lost during cooking due to high heat. (II) Washing cut or peeled vegetables and fruits may result in the loss of some vitamins. (III) Fruits and vegetables should not be washed before consumption. Which of the above is/are correct?

8. Apart from the liver and the inner lining of the small intestine, the small intestine receives digestive secretions from the:

9. In plant cells, vacuoles can occupy up to what percentage of the cell volume?

10. Offspring that are not exactly like either parent are produced by:

11. In Spirogyra, reproduction takes place when the filament breaks up into smaller pieces that grow into new individuals. This is called:

12. Which of the following is a source of Vitamin A?

13. Penicillin, the first antibiotic, was discovered in 1928 by:

14. The flatworm studied to understand regeneration in animals is:

15. Selection of variants by environmental factors forms the basis of:

16. The association of fungi with the roots of higher plants is called:

17. The secretions of the prostate gland and seminal vesicles provide the sperms with:

18. Plastids that contain chlorophyll are called:

19. The special features that enable plants and animals to survive in a particular region are called:

20. Illegal sex-selective abortion of female foetuses leads to a decline in the:

21. Errors in mitosis leading to uncontrolled cell division can result in:

22. The Sangai, the dancing deer found on floating phumdis, is endemic to:

23. The scientist who studied the structure of vitamin B12 and won the Nobel Prize in Chemistry in 1964 is:

24. The cellular functions of sieve tube cells are regulated by:

25. Consider the following pairs: (I) Halophiles – Hot springs (II) Methanogens – Marshy areas (III) Thermoacidophiles – Hot springs Which of the pairs given above is/are correctly matched?

26. Paramecium belongs to the group of microorganisms called:

27. Binary fission in a definite orientation, in relation to a whip-like structure at one end of the cell, is seen in:

28. The transfer of pollen from one flower to another by wind, insects or animals is called:

29. Many unicellular organisms remove wastes from the body surface into the surrounding water by:

30. Consider the following pairs: (I) Bawadi – Rajasthan (II) Vav – Gujarat (III) Bawadi – Gujarat Which of the pairs given above is/are correctly matched?