Transport – Online MCQs Test – Biology 9th

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

2. They control the opening and closing of stomata.

3. Human plasma proteins include which of the following?

(i)        Fibrinogen

(ii)       Hemoglobin

(iii)     Albumin

4. In cell, transpiration maintains:

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

6. Stomata are surrounded by two kidney shaped:

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

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

9. The outer layer of root cells consists of:

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

11. The high solute potential of leaf cells attract:

12. Upward movement of water with mineral is called:

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

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

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

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

17. The rate of transpiration decreases with the:

18. Water and mineral salts enter the plant through:

19. 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

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

(i)        Diffusion

(ii)       Active transport

(iii)     Osmosis

(iv)     Passive Tran port

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

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

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

24. Part of root between epidermis and endodermis called:

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