1. The basic unit of all living organisms is

2. A high surface area to volume ratio in cells is important because it

3. A balanced diet contains

4. Food is normally digested in the

5. The offspring from a cross between two individuals differing in at least one set of characters is called a

6. What is the most likely explanation for the observation that two individuals originating from the same clone look different?

7. In which of the following will you look for E. Coli?

8. Upon the entry of carbon dioxide in the red blood cells, H+ionsare formed at a very rapid rate, and yet the blood does not turn acid because

9. Every multicellular organism, be it a microscopic alga, a banyan tree or a human being, starts as a single cell called a/an

10. Main substance involved in transfer of electrons in photosynthesis is

11. Consider the following statements:
1. Propagation of a nerve impulse in a myelinated nerve fibre is different from that of unmyelinated fibre.
2. The impulse actually travels by leaping through the nodes of Ranvier in an unmyelinated fibre
3. The local circuits occur only at the internodes and at each node, the action potential is boosted to the same height by ionic mechanisms.
4. In the rest of the internodes, such an exchange is not possible due to the presence of myelin sheath acting as an insulator.
Which of the above statements are incorrect?

12. The diaphragm assists in

13. How many different kinds of amino acids are specified by the genetic code?

14. Which of the following animals are dolphins not closely related to?

15. Snakes and lizards are animals that are

16. Glucose is mainly absorbed in

17. The fluid medium of the nucleus is called

18. A cockroach has

19. Lichen is considered to be a symbiotic association of two living organisms. Which organisms are involved in it?

20. The substance which is reabsorbed as well as excreted by the kidney tubule is

21. The study of pollen grain is known as :

22. HCI is secreted by

23. A ‘clinical death' takes place when

24. The process of the division of somatic cells of an organism is called

25. Fruiting body of mushrooms is present in