Life Processes Worksheet-35

Life Processes Worksheet-35

True or false:

1. Plasma transports food, CO₂ and nitrogenous wastes.

2. The circulatory system consists of conducting vessels only.

3. Heart is divided into compartments so that the oxygenated and the deoxygenated blood do not mix.

4. Fishes have four chambered heart.

5. The pH of blood is acidic.

6. Fibrinogen is a protein present in tissue fluid.

7. The respiratory pigment found in RBC is hemoglobin.

8. Tricuspid valve is present on the right side of heart.

9. Mitral valve is present on the left side of the heart.

10. Heart is two chambered in fishes.

11. Arteries are collecting blood vessels while veins are distributing blood vessels.

12. SA node is situated on the left wall of left atrium.

13. Pulmonary artery is the only artery which carries deoxygenated blood.

14. The contraction of heart is called systole while relaxation of heart is called diastole.

15. Systemic circulation begins in right ventricle and ends in left atrium.

16. Blood flows twice through the heart and this is called double circulation.

17. The lumen of vein is larger than that of an artery.

18. Loss of water from leaves as water vapour is known as translocation.

19. Vascular tissues in plants are also known as conducting tissues.

20. Xylem helps in conduction of food material and phloem helps in conduction of water and minerals.

21. In herbs, transportation of various material can occur by a simple diffusion process.

22. Phloem also carries food as well as hormones made by the plants.

23. Xylem tissue is comprised of all dead cells.

24. Root hairs are covered by a thin epithelial lining.

25. Blood is an example of fluid connective tissue.

Answer:

1. True

2. False; The circulatory system consists of blood, conducting vessels and heart

3. True

4. False; Fishes have two chambered heart

5. False; The pH of blood is alkaline

6. False; Fibrinogen is a protein present in plasma

7. True

8. True

9. True

10. True

11. False; Arteries are distributing blood vessels while veins are collecting blood vessels.

12. False; SA node is situated on the right wall of right atrium.

13. True

14. True

15. False; Pulmonary circulation begins in right ventricle and ends in left atrium.

16. True

17. True

18. False; Loss of water from leaves as water vapour is known as transpiration

19. True

20. False; Xylem helps in conduction of food material and phloem helps in conduction of water and minerals

21. True

22. True

23. False, Xylem tissue is comprised of all dead cells except parenchyma

24. False; Root hairs are covered by a thin epidermal lining

25. True