Here are 20 MCQs on Plant Adaptation with correct answers for your quick revision, quizzes, or class tests:
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PLANT ADAPTATION – MCQs
1. Which of the following is a xerophytic adaptation?
a) Broad leaves
b) Thick cuticle
c) Thin cuticle
d) Large stomata
✅ Answer: b) Thick cuticle
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2. Mangrove plants show which type of roots for respiration?
a) Prop roots
b) Buttress roots
c) Pneumatophores
d) Adventitious roots
✅ Answer: c) Pneumatophores
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3. Which adaptation helps cactus to reduce water loss?
a) Broad leaves
b) Spines instead of leaves
c) Thin stem
d) Presence of stomata on upper surface
✅ Answer: b) Spines instead of leaves
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4. Hydrophytes are plants which grow in:
a) Desert
b) Water
c) Saline soil
d) Sandy soil
✅ Answer: b) Water
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5. Plants growing in saline water are called:
a) Hydrophytes
b) Xerophytes
c) Mesophytes
d) Halophytes
✅ Answer: d) Halophytes
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6. Which plant shows floating leaves with long petiole?
a) Lotus
b) Mango
c) Neem
d) Cactus
✅ Answer: a) Lotus
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7. The thick fleshy stem of cactus is adapted for:
a) Reproductio
b) Photosynthesis and water storage
c) Anchorage
d) Nitrogen fixation
✅ Answer: b) Photosynthesis and water storage
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8. Which of the following is an adaptation in submerged hydrophytes?
a) Stomata on upper surface
b) Air cavities in parenchyma
c) Thick cuticle
d) Fibrous root system
✅ Answer: b) Air cavities in parenchyma
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9. Which part of cactus performs photosynthesis?
a) Roots
b) Stem
c) Spines
d) Flowers
✅ Answer: b) Stem
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10. The breathing roots in mangrove trees are called:
a) Stilt roots
b) Pneumatophores
c) Prop roots
d) Tap roots
✅ Answer: b) Pneumatophores
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11. Mesophytes are plants growing in:
a) Water
b) Normal soil with moderate water
c) Saline conditions
d) Deserts
✅ Answer: b) Normal soil with moderate water
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12. Which plant has leaves modified into spines?
a) Lotus
b) Mango
c) Cactus
d) Neem
✅ Answer: c) Cactus
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13. Which of the following helps aquatic plants to float?
a) Large roots
b) Air chambers in tissues
c) Thick stem
d) Broad roots
✅ Answer: b) Air chambers in tissues
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14. The adaptation of drip tips in rainforest plants is to:
a) Store water
b) Shed excess water quickly
c) Absorb sunlight
d) Trap insects
✅ Answer: b) Shed excess water quickly
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15. In xerophytes, stomata are:
a) Absent
b) Present on upper surface
c) Sunken and less in number
d) Very large
✅ Answer: c) Sunken and less in number
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16. Plants growing on other plants but not parasitic are called:
a) Parasites
b) Epiphytes
c) Saprophytes
d) Halophytes
✅ Answer: b) Epiphytes
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17. Which of the following is an adaptation of epiphytes?
a) Pneumatophores
b) Velamen tissue in roots
c) Spines instead of leaves
d) Thick cuticle
✅ Answer: b) Velamen tissue in roots
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18. Pitcher plant is adapted to:
a) Saline soil
b) Poor nitrogen soil
c) Underwater conditions
d) Deserts
✅ Answer: b) Poor nitrogen soil
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19. Plants growing in deserts show which type of root system?
a) Shallow fibrous roots
b) No roots
c) Long deep tap roots
d) Floating roots
✅ Answer: c) Long deep tap roots
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20. The adaptation of waxy coating on leaves is mainly to:
a) Attract pollinators
b) Reduce water loss
c) Trap insects
d) Absorb more sunlight
✅ Answer: b) Reduce water loss