Biology Life process in Animals & Plants Online Mcqs Test

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Question 1

1. What part of the immune system destroys infected or abnormal body cells?

Answer

Plasma cells

Answer

Neutrophils

Question 2

2. Which blood vessel carries oxygenated blood from the lungs to the heart?

Answer

Pulmonary vein

Answer

Pulmonary artery

Question 3

3. Which of the following is not a function of the liver?

Answer

Red blood cell production

Answer

Detoxification

Answer

Bile production

Answer

Storage of glycogen

Question 4

4. Which blood vessel carries blood away from the heart?

Answer

Capillaries

Question 5

5. Which gas is released during cellular respiration?

Answer

Carbon dioxide

Question 6

6. Which of the following carries deoxygenated blood?

Answer

Pulmonary vein

Answer

Carotid artery

Answer

Pulmonary artery

Question 7

7. The main pumping chamber of the human heart is:

Answer

Left ventricle

Answer

Right atrium

Answer

Left atrium

Answer

Right ventricle

Question 8

8. What is the role of stomata in plants?

Answer

Seed dispersal

Answer

Gaseous exchange and transpiration

Answer

Absorption of nutrients

Answer

Photosynthesis

Question 9

9. Which blood vessel is the site of exchange of gases and nutrients?

Answer

Lymph vessel

Question 10

10. The tissue responsible for transporting water in plants is:

Answer

Collenchyma

Answer

Parenchyma

Question 11

11. Which component of blood helps in defense against pathogens?

Answer

Red blood cells

Answer

White blood cells

Question 12

12. What is the function of the trachea?

Answer

Air passage to lungs

Answer

Blood circulation

Answer

Voice production

Answer

Food digestion

Question 13

13. Which enzyme is found in saliva?

Question 14

14. The pancreas secretes which of the following?

Answer

Insulin and digestive enzymes

Answer

Adrenaline

Answer

Hydrochloric acid

Question 15

15. Which structure in plants is responsible for the transport of organic nutrients?

Answer

Parenchyma

Answer

Collenchyma

Question 16

16. Which organ filters lymph?

Answer

Lymph node

Question 17

17. Where does gaseous exchange occur in the lungs?

Question 18

18. What is the primary organ for digestion in the human body?

Answer

Large intestine

Question 19

19. Which component of the blood helps in clotting?

Question 20

20. Which part of the human heart pumps oxygenated blood to the body?

Answer

Left atrium

Answer

Right atrium

Answer

Left ventricle

Answer

Right ventricle

Question 21

21. Which structure in the human body acts as a natural pacemaker?

Answer

Purkinje fibers

Answer

Bundle of His

Question 22

22. Which of the following plants traps insects using sticky substances?

Question 23

23. Which structure in a plant is mainly responsible for water uptake?

Question 24

24. Which part of the small intestine absorbs nutrients?

Question 25

25. Which part of the nephron is responsible for filtration?

Answer

Bowman's capsule

Answer

Loop of Henle

Answer

Collecting duct

Answer

Distal tubule

Question 26

26. Which component of the immune system is responsible for producing antibodies?

Answer

Neutrophils

Answer

Macrophages

Question 27

27. Which part of the respiratory system contains vocal cords?

Question 28

28. What is the main function of hemoglobin?

Answer

Digest food

Answer

Produce hormones

Answer

Transport oxygen

Answer

Fight infection

Question 29

29. Which digestive organ is responsible for absorbing most nutrients?

Answer

Large intestine

Answer

Small intestine

Question 30

30. Which component of the immune system engulfs bacteria?

Answer

Red blood cells

Answer

Phagocytes

Question 31

31. Where is oxygen primarily transported in the blood?

Answer

Carried by white blood cells

Answer

Dissolved in plasma

Answer

Attached to hemoglobin in red blood cells

Answer

Bound to platelets

Question 32

32. What is the role of lymph?

Answer

Return tissue fluid to the bloodstream

Answer

Filter blood

Answer

Produce red blood cells

Answer

Carry oxygen

Question 33

33. What structure separates the chest cavity from the abdominal cavity?

Question 34

34. What is the function of chlorophyll in plants?

Answer

Sugar storage

Answer

Water absorption

Answer

Seed dispersal

Answer

Light absorption for photosynthesis

Question 35

35. Which component of blood helps in oxygen transport?

Answer

Red blood cells

Answer

White blood cells

Question 36

36. Which plant part transports food in plants?

Question 37

37. Which of the following is a plant with pitcher-shaped leaves used to trap insects?

Answer

Bryophyllum

Answer

Pitcher plant

Question 38

38. Which enzyme digests proteins in the stomach?

Question 39

39. Which of the following is a function of the lymphatic system?

Answer

Hormone production

Answer

Return of tissue fluid to the blood

Answer

Digestion of food

Answer

Oxygen transport

Question 40

40. Which plant shows parasitic nutrition?

Answer

Pitcher plant

Answer

Cuscuta (dodder)

Question 41

41. What is the main gas exchanged in photosynthesis?

Answer

Nitrogen fixed

Answer

Oxygen released

Answer

Carbon dioxide released

Answer

Oxygen taken in

Question 42

42. Which of the following is not part of the lymphatic system?

Answer

Bone marrow

Question 43

43. Which gland produces antibodies?

Answer

B cells (lymphocytes)

Answer

Lymph nodes

Question 44

44. Which pressure influences water movement in plant cells?

Answer

Blood pressure

Answer

Atmospheric pressure

Answer

Osmotic pressure

Answer

Air pressure

Question 45

45. Which of the following plants uses trap-like structures to capture insects?

Answer

Venus flytrap

Question 46

46. Which part of the brain regulates breathing rate?

Answer

Hypothalamus

Answer

Cerebellum

Answer

Medulla oblongata

Question 47

47. What is the function of the large intestine?

Answer

Protein digestion

Answer

Water absorption

Answer

Fat digestion

Answer

Oxygen exchange

Question 48

48. What causes the upward movement of water in xylem?

Answer

Root pressure only

Answer

Transpiration pull

Question 49

49. Which blood component defends the body against infection?

Answer

Red blood cells

Answer

White blood cells

Question 50

50. Where does the digestion of carbohydrates begin?

Answer

Small intestine

Question 51

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Total Questions:	50
Time Allowed:	25 Minutes
Total Marks:	50
How to Attempt Test:	Please choose the right Option in MCQ-type question.
Test Helpful For:	Biology Test MDCAT Test FPSC/PPSC/SPSC/KPPSC/BPSC/AJKPSC/NTS Biology Interview Question Answer Universities Entrance Test

Biology Life process in Animals & Plants Online Mcqs Test

Important Biology Life process in Animals & Plants Question and Answer

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Important Biology Life process in Animals & Plants Question and Answer

Biology Life process in Animals & Plants Practice Test Online With Explanation

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How to Score High in Biology Life process in Animals & Plants Online Mcqs Test?

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Malik Tahir

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