Time Left:
600
sec
1. Which process provides maintenance functions in living organisms?
A. Photosynthesis
B. Life processes
C. Circulation
D. Evolution
2. Which is the main source of energy for living organisms?
A. Oxygen
B. Water
C. Food
D. Carbon dioxide
3. Which mode of nutrition involves intake of simple inorganic materials?
A. Heterotrophic
B. Autotrophic
C. Parasitic
D. Saprophytic
4. Which pigment is essential for photosynthesis?
A. Hemoglobin
B. Myoglobin
C. Chlorophyll
D. Keratin
5. Which gas is absorbed by potassium hydroxide in a photosynthesis experiment?
A. Oxygen
B. Carbon dioxide
C. Nitrogen
D. Hydrogen
6. Which cells control the opening and closing of stomata?
A. Root hair cells
B. Guard cells
C. Xylem cells
D. Phloem cells
7. Which raw material is essential for protein synthesis in plants?
A. Magnesium
B. Phosphorus
C. Nitrogen
D. Calcium
8. Which organism shows holozoic nutrition?
A. Bread mould
B. Cuscuta
C. Amoeba
D. Mushroom
9. Which enzyme in saliva breaks down starch?
A. Lipase
B. Pepsin
C. Salivary amylase
D. Trypsin
10. Which acid is secreted by gastric glands in the stomach?
A. Acetic acid
B. Hydrochloric acid
C. Sulphuric acid
D. Nitric acid
11. Which organ stores bile juice?
A. Pancreas
B. Liver
C. Gall bladder
D. Small intestine
12. Which process converts fats into fatty acids and glycerol?
A. Amylase action
B. Lipase action
C. Trypsin action
D. Pepsin action
13. Which structure increases surface area for absorption in the small intestine?
A. Rugae
B. Villi
C. Cilia
D. Alveoli
14. Which condition is caused by lactic acid accumulation in muscles?
A. Diabetes
B. Cramps
C. Fever
D. Hypertension
15. Which organelle is the site of aerobic respiration?
A. Nucleus
B. Mitochondria
C. Cytoplasm
D. Ribosome
16. What is the full form of ATP?
A. Adenosine Triphosphate
B. Adenosine Tetraphosphate
C. Adenine Trisugar phosphate
D. Adenosine Diphosphate
17. Which respiratory pigment carries oxygen in human blood?
A. Chlorophyll
B. Myosin
C. Haemoglobin
D. Keratin
18. Which structure in lungs provides a large surface area for gas exchange?
A. Bronchi
B. Trachea
C. Alveoli
D. Diaphragm
19. Which side of the human heart receives deoxygenated blood?
A. Left atrium
B. Right atrium
C. Left ventricle
D. Right ventricle
20. Which type of circulation occurs in humans?
A. Single circulation
B. Double circulation
C. Partial circulation
D. Open circulation
Submit Test