Transport – Online MCQs Test – Biology 9th

1. They are the pores usually found in the leaf epidermis.

2. Transpiration mainly takes place through special pores guarded by specialized guard cells called:

3. The loss of internal water of plant in the form of vapours from aerial part of plant is called:

4. Root has a root tip which is the growing part of root covered by:

5. They control the opening and closing of stomata.

6. Water and mineral salts enter the plant through:

7. Stomata are surrounded by two kidney shaped:

8. Human plasma proteins include which of the following?

(i)        Fibrinogen

(ii)       Hemoglobin

(iii)     Albumin

9. The outer layer of root cells consists of:

10. Root hairs are most important to a plant because they:

11. In cell, transpiration maintains:

12. The rate of transpiration decreases with the:

13. Movement of water molecules from the area of higher potential to the area of lower water potential called:

14. A type of circulatory system blood flow through the spaces among tissues called:

(i)        open type circulatory system

(ii)       close type circulatory system

(iii)      pulmonary circulatory system

15. Phloem transport of sucrose can be described as going from "source to sink" which of the following would not normally function as a sink?

16. In human heart blood returning from lungs first drains into the:

17. The movement of organic materials (food) takes place through:

18. The high solute potential of leaf cells attract:

19. Upward movement of water with mineral is called:

20. Part of root between epidermis and endodermis called:

21. Which of these are involved in the clotting of blood?

22. Minerals are taken up by root hair in two ways:

(i)        Diffusion

(ii)       Active transport

(iii)     Osmosis

(iv)     Passive Tran port

23. Each root hair is a fine tubular outgrowth of an/a:

24. What regulates the flow of water through the xylem?

25. Root is highly branched and each branch is heavily covered by: