Transport – Online MCQs Test – Biology 9th

1. This type of circulatory system allows blood to flow inside the closed tubular blood vessels and never comes out in direct contact with tissues.

2. He was the first Arab physician to explain pulmonary circulation.

3. On average, a healthy heart beats are:

4. They produce in bone marrow.

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

6. They control the opening and closing of stomata.

7. Open type circulatory system is found in:

8. In this type of blood cancer, number of WBCs increases and RBCs decreases.

9. Atria are completely separated from each other by:

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

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

12. It conducts manufactured food (sucrose) from part of plant where it is synthesized to other parts of the plant where it is required.

13. They have walls made up of single layer of flattened cells called endothelium:

14. These are present in blood for clotting of blood.

15. In open circulatory system, blood remains filled in the open tissue spaces called:

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

17. Average life of Erythrocytes (RBCs) is:

18. Bicuspid valve connects:

19. In this type of circulatory system blood flows through the spaces among tissue so it directly comes in contact with tissues.

20. Tricuspid valve connects: