10TH CBSE SCIENCE Life Processes ONLINE MCQS TEST WITH SCORE

20:00

Class 10 Science - Life Processes (20 MCQs)

Q1. The kidneys in human beings are part of which system?
Nutrition
Respiration
Excretion
Transportation

Q2. Xylem transports:
Water
Food
Oxygen
Amino acids

Q3. Autotrophic nutrition requires:
CO₂ & water
Chlorophyll
Sunlight
All of these

Q4. Breakdown of pyruvate to CO₂ and water occurs in:
Cytoplasm
Mitochondria
Nucleus
Chloroplast

Q5. Salivary amylase digests:
Proteins
Starch
Fats
Vitamins

Q6. Hydrochloric acid is prevented from damaging the stomach by:
Pepsin
Mucus
Bile
Lipase

Q7. Bile is released into the:
Stomach
Small intestine
Large intestine
Oesophagus

Q8. Food is completely digested in the:
Stomach
Mouth
Small intestine
Large intestine

Q9. Exchange of gases occurs in:
Trachea
Alveoli
Bronchi
Larynx

Q10. Blood backflow is prevented by:
Valves
Atria
Ventricles
Capillaries

Q11. Arteries carry blood:
Towards heart
Away from heart
Only oxygenated
Only deoxygenated

Q12. Zylem movement of water is mainly due to:
Transpiration pull
Diffusion
Osmosis only
Respiration

Q13. ATP is:
Waste
Energy currency
Hormone
Enzyme

Q14. Photosynthesis occurs in:
Roots
Green parts
Flowers only
Fruits

Q15. The longest part of alimentary canal is:
Stomach
Large intestine
Small intestine
Oesophagus

Q16. Pulmonary circulation is between:
Heart and body
Heart and lungs
Liver and heart
Kidney and heart

Q17. RBC pigment is:
Melanin
Haemoglobin
Chlorophyll
Keratin

Q18. Which blood cells help in clotting?
RBC
Platelets
WBC
Lymphocytes

Q19. Double circulation is found in:
Fish
Whale
Earthworm
Cockroach

Q20. Nitrogen is absorbed by plants mainly as:
Protein
Nitrites/Nitrates
Ammonia gas
Urea