Biology Life process in Animals & Plants Online Mcqs Test

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Question 1

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

Answer

Pulmonary vein

Answer

Pulmonary artery

Question 2

2. Which organ filters lymph?

Answer

Lymph node

Question 3

3. Where does gaseous exchange occur in the lungs?

Question 4

4. 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 5

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

Answer

Purkinje fibers

Answer

Bundle of His

Question 6

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

Answer

Bone marrow

Question 7

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

Answer

Pitcher plant

Answer

Bryophyllum

Question 8

8. Which component of the blood helps in clotting?

Question 9

9. The pancreas secretes which of the following?

Answer

Insulin and digestive enzymes

Answer

Adrenaline

Answer

Hydrochloric acid

Question 10

10. Which component of the immune system engulfs bacteria?

Answer

Red blood cells

Answer

Phagocytes

Question 11

11. Which component of blood helps in oxygen transport?

Answer

Red blood cells

Answer

White blood cells

Question 12

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

Answer

Collenchyma

Answer

Parenchyma

Question 13

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

Answer

Left atrium

Answer

Left ventricle

Answer

Right ventricle

Answer

Right atrium

Question 14

14. Which pressure influences water movement in plant cells?

Answer

Air pressure

Answer

Blood pressure

Answer

Osmotic pressure

Answer

Atmospheric pressure

Question 15

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

Answer

Right ventricle

Answer

Left atrium

Answer

Right atrium

Answer

Left ventricle

Question 16

16. Which of the following carries deoxygenated blood?

Answer

Pulmonary artery

Answer

Carotid artery

Answer

Pulmonary vein

Question 17

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

Question 18

18. What is the function of the trachea?

Answer

Air passage to lungs

Answer

Voice production

Answer

Food digestion

Answer

Blood circulation

Question 19

19. What is the function of chlorophyll in plants?

Answer

Seed dispersal

Answer

Water absorption

Answer

Light absorption for photosynthesis

Answer

Sugar storage

Question 20

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

Question 21

21. What is the role of lymph?

Answer

Filter blood

Answer

Return tissue fluid to the bloodstream

Answer

Produce red blood cells

Answer

Carry oxygen

Question 22

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

Answer

Large intestine

Question 23

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

Answer

Venus flytrap

Question 24

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

Answer

Macrophages

Answer

Neutrophils

Question 25

25. Where does the digestion of carbohydrates begin?

Answer

Small intestine

Question 26

26. What is the role of stomata in plants?

Answer

Absorption of nutrients

Answer

Gaseous exchange and transpiration

Answer

Photosynthesis

Answer

Seed dispersal

Question 27

27. What is the function of the large intestine?

Answer

Protein digestion

Answer

Water absorption

Answer

Fat digestion

Answer

Oxygen exchange

Question 28

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

Answer

Collecting duct

Answer

Distal tubule

Answer

Bowman's capsule

Answer

Loop of Henle

Question 29

29. Which gas is released during cellular respiration?

Answer

Carbon dioxide

Question 30

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

Answer

Capillaries

Question 31

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

Answer

Plasma cells

Answer

Neutrophils

Question 32

32. Which enzyme is found in saliva?

Question 33

33. Which enzyme digests proteins in the stomach?

Question 34

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

Question 35

35. Which gland produces antibodies?

Answer

Lymph nodes

Answer

B cells (lymphocytes)

Question 36

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

Question 37

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

Answer

Lymph vessel

Question 38

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

Answer

Return of tissue fluid to the blood

Answer

Hormone production

Answer

Oxygen transport

Answer

Digestion of food

Question 39

39. Which plant shows parasitic nutrition?

Answer

Cuscuta (dodder)

Answer

Pitcher plant

Question 40

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

Answer

Collenchyma

Answer

Parenchyma

Question 41

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

Answer

Transpiration pull

Answer

Root pressure only

Question 42

42. Which part of the small intestine absorbs nutrients?

Question 43

43. What is the main function of hemoglobin?

Answer

Digest food

Answer

Produce hormones

Answer

Transport oxygen

Answer

Fight infection

Question 44

44. What is the main gas exchanged in photosynthesis?

Answer

Oxygen taken in

Answer

Carbon dioxide released

Answer

Nitrogen fixed

Answer

Oxygen released

Question 45

45. Which plant part transports food in plants?

Question 46

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

Answer

Red blood cells

Answer

White blood cells

Question 47

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

Answer

Red blood cell production

Answer

Storage of glycogen

Answer

Bile production

Answer

Detoxification

Question 48

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

Answer

Small intestine

Answer

Large intestine

Question 49

49. Which part of the brain regulates breathing rate?

Answer

Medulla oblongata

Answer

Hypothalamus

Answer

Cerebellum

Question 50

50. Which blood component defends the body against infection?

Answer

White blood cells

Answer

Red blood cells

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

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

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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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