1. 1. Which of the following is not a digestive enzyme contained in the pancreatic juice?
i. Lipase
ii. Hydrochloric acid
iii. Mucus
iv. Trypsin

2. The enzymes pepsin and trypsin are secreted respectively b

3. Arteries and veins are connected by a network of extremely narrow tubes called:

4. Which among the following is necessary to carry out the blood coagulation in a cut or wound?

5. Plants use the energy stored in ATP to accomplish the process of transportation of:

6. The excretory unit of the human excretory system is known as:

7. Which among the following procedures is used for cleaning the blood of a person by separating the waste substance from it?

8. The process of diffusion of solvent particles from the region of less solute concentration to a region of high solute concentration through semi-permeable membrane is known as

9. Sometimes we get painful cramps in our leg muscles after running for a long time due to the accumulation of:

10. The enzymes contained in pancreatic juices help in the digestion of:

11. The opening and closing of the stomatal pore depends upon

12. The respiratory pigment in human beings is:

13. The contraction and expansion movement of the walls of the food pipe is called:

14. A plant gets rid of excess water through transpiration. Which is a method used by plants to get rid of solid waste products?

15. How is food transported from phloem to the tissues according to plants’ needs?

16. Which is the correct sequence of body parts in the human alimentary canal?

17. Chemicals present in the tobacco smoke lead to the breakdown of the elastic tissue in the alveoli. Name this specific condition.

18. When a few drops of iodine solution are added to rice water, the solution turns blue- black in colour. This indicates that rice water contains:

19. In amoeba, food is digested in the:

20. What prevents backflow of blood inside the heart during contraction?