Sets
Biology Set 13
30 questions 1. Consider the following statements:
(I) Ventricles have thicker muscular walls than atria.
(II) Valves ensure that blood does not flow backwards when the atria or ventricles contract.
(III) The left atrium is a thin-walled upper chamber of the heart.
Which of the above is/are correct?
2. Rhizobium bacteria trap which gas from the air and make it useful for plants?
3. The entire distance travelled by a food item from the producer to the consumer is called:
4. If the water temperature of a bacterial population living in temperate waters rises due to global warming, the survivors would most likely be:
5. Pakke Tiger Reserve is located in:
6. Consider the following pairs:
(I) Punjab – Sarson da saag
(II) Karnataka – Idli
(III) Manipur – Chhole bhature
Which of the pairs given above is/are correctly matched?
7. Consider the following statements about non-communicable diseases:
(I) They are not caused by pathogens.
(II) They do not spread from one person to another.
(III) Typhoid is an example.
Which of the above is/are correct?
8. Dengue fever is also known as:
9. Exchange of nutrients and gases between blood and cells occurs through the:
10. The arrangement of axonemal microtubules in cilia and flagella is called the:
11. Antibiotics are effective only against infections caused by:
12. The progressive accumulation of non-degradable harmful chemicals at each trophic level is called:
13. The binomial system of naming organisms was introduced in the 18th century by:
14. The enzymes of the intestinal juice finally convert proteins into:
15. When blood sugar level rises, the cells of the pancreas respond by:
16. The main source of energy on Earth is the:
17. Which of the following ancient Indian texts classify animals on the basis of habitat, behaviour patterns and ecological roles?
18. Smoking destroys the hair-like structures in the upper respiratory tract that help remove germs and dust. These structures are called:
19. Buds produced in the notches along the leaf margin fall on the soil and develop into new plants in:
20. Consider the following statements about contraception:
(I) Condoms act as a mechanical barrier so that sperm does not reach the egg.
(II) Oral pills change the hormonal balance so that eggs are not released.
(III) The copper-T is placed in the vagina to prevent pregnancy.
Which of the above is/are correct?