🌱 Tissues – Class 9 Science MCQs

Section 2: Permanent Plant Tissues – Simple & Complex (Q26–Q50)

Q26. Permanent tissues are formed from:

A. Collenchyma
B. Parenchyma
C. Meristematic tissues
D. Sclerenchyma

✅ Correct Answer: C. Meristematic tissues

Explanation:

• A. Collenchyma → Already permanent.
• B. Parenchyma → A type of permanent tissue.
• C. Correct, meristems differentiate → permanent tissues.
• D. Sclerenchyma → Dead permanent tissue.

Q27. Which of the following is NOT a simple permanent tissue?

A. Parenchyma
B. Collenchyma
C. Sclerenchyma
D. Xylem

✅ Correct Answer: D. Xylem

Explanation:

• A, B, C → Simple permanent tissues.
• D. Xylem = Complex permanent tissue.

Q28. The simplest permanent tissue is:

A. Parenchyma
B. Collenchyma
C. Sclerenchyma
D. Phloem

✅ Correct Answer: A. Parenchyma

Explanation:

• A. Correct, thin-walled, living, least specialized.
• B. Collenchyma → Mechanical support.
• C. Sclerenchyma → Dead, rigid.
• D. Phloem → Complex tissue.

Q29. Parenchyma cells with chlorophyll are called:

A. Aerenchyma
B. Collenchyma
C. Chlorenchyma
D. Sclerenchyma

✅ Correct Answer: C. Chlorenchyma

Explanation:

• A. Aerenchyma → Air spaces.
• B. Wrong.
• C. Correct, chlorenchyma = photosynthetic parenchyma.
• D. Dead tissue.

Q30. Parenchyma with large air cavities (aquatic plants) is called:

A. Chlorenchyma
B. Aerenchyma
C. Collenchyma
D. Phloem

✅ Correct Answer: B. Aerenchyma

Explanation:

• A. Chlorenchyma → Photosynthetic.
• B. Correct, helps in buoyancy.
• C. Collenchyma → Support.
• D. Transport tissue.

Q31. The main function of collenchyma is:

A. Transport
B. Photosynthesis
C. Flexibility & support
D. Storage

✅ Correct Answer: C. Flexibility & support

Explanation:

• A. Transport → Xylem/phloem.
• B. Photosynthesis → Chlorenchyma.
• C. Correct, thickened corners provide flexibility.
• D. Storage → Parenchyma.

Q32. The main mechanical tissue of plants is:

A. Parenchyma
B. Collenchyma
C. Sclerenchyma
D. Phloem

✅ Correct Answer: C. Sclerenchyma

Explanation:

• A. Parenchyma → Storage.
• B. Collenchyma → Flexible support.
• C. Correct, sclerenchyma = rigid mechanical tissue.
• D. Transport.

Q33. Which of the following has thick lignified walls?

A. Parenchyma
B. Collenchyma
C. Sclerenchyma
D. Phloem parenchyma

✅ Correct Answer: C. Sclerenchyma

Explanation:

• A. Thin walls.
• B. Cellulose thickened corners.
• C. Correct, thick lignin walls, dead cells.
• D. Living cells, not lignified.

Q34. The main function of sclerenchyma is:

A. Photosynthesis
B. Mechanical strength
C. Transport of food
D. Storage of food

✅ Correct Answer: B. Mechanical strength

Explanation:

• A. Wrong.
• B. Correct, lignified walls provide rigidity.
• C. Transport → Xylem & phloem.
• D. Storage → Parenchyma.

Q35. Sclerenchyma cells are:

A. Living with nucleus
B. Dead, without protoplasm
C. Living with thick walls
D. Thin-walled & living

✅ Correct Answer: B. Dead, without protoplasm

Explanation:

• A. Wrong.
• B. Correct, dead at maturity.
• C. Wrong, that’s collenchyma.
• D. Parenchyma.

Q36. Which simple permanent tissue makes husk of coconut?

A. Parenchyma
B. Collenchyma
C. Sclerenchyma
D. Phloem

✅ Correct Answer: C. Sclerenchyma

Explanation:

• A. Storage tissue.
• B. Flexible support.
• C. Correct, sclerenchyma fibres in coconut husk.
• D. Transport.

Q37. Which complex tissue transports water in plants?

A. Phloem
B. Xylem
C. Parenchyma
D. Collenchyma

✅ Correct Answer: B. Xylem

Explanation:

• A. Phloem → Food transport.
• B. Correct, xylem → Water transport.
• C, D → Not transport tissues.

Q38. Which xylem element is living?

A. Tracheids
B. Vessels
C. Xylem fibres
D. Xylem parenchyma

✅ Correct Answer: D. Xylem parenchyma

Explanation:

• A. Dead.
• B. Dead.
• C. Dead.
• D. Correct, xylem parenchyma = living, stores food.

Q39. Main water-conducting element in angiosperms:

A. Tracheids
B. Vessels
C. Fibres
D. Parenchyma

✅ Correct Answer: B. Vessels

Explanation:

• A. Tracheids → Gymnosperms.
• B. Correct, vessels efficient in angiosperms.
• C. Fibres → Support.
• D. Storage.

Q40. Which xylem element provides mechanical support?

A. Tracheids
B. Vessels
C. Fibres
D. Parenchyma

✅ Correct Answer: C. Fibres

Explanation:

• A. Transport.
• B. Transport.
• C. Correct, sclerenchyma fibres give strength.
• D. Storage.

Q41. Which xylem element transports water across pits?

A. Vessels
B. Tracheids
C. Fibres
D. Phloem

✅ Correct Answer: B. Tracheids

Explanation:

• A. Vessels → Efficient long tubes.
• B. Correct, tracheids have pits for water movement.
• C. Fibres → Support.
• D. Food transport.

Q42. Which tissue transports food in plants?

A. Xylem
B. Phloem
C. Collenchyma
D. Parenchyma

✅ Correct Answer: B. Phloem

Explanation:

• A. Xylem → Water transport.
• B. Correct, phloem transports food.
• C, D → Not transport tissues.

Q43. Which phloem element is without nucleus but alive?

A. Companion cell
B. Phloem fibre
C. Sieve tube
D. Phloem parenchyma

✅ Correct Answer: C. Sieve tube

Explanation:

• A. Companion cells → With nucleus.
• B. Fibres → Dead.
• C. Correct, sieve tubes alive but without nucleus.
• D. Parenchyma → Living with nucleus.

Q44. Which phloem element controls sieve tubes?

A. Phloem fibre
B. Companion cell
C. Phloem parenchyma
D. Sieve tube

✅ Correct Answer: B. Companion cell

Explanation:

• A. Fibres → Support.
• B. Correct, companion cells regulate sieve tubes.
• C. Storage.
• D. Transport but no nucleus.

Q45. Phloem fibres are:

A. Living
B. Dead
C. Living with nucleus
D. Living without nucleus

✅ Correct Answer: B. Dead

Explanation:

• A. Wrong.
• B. Correct, sclerenchyma fibres in phloem are dead.
• C, D → Wrong.

Q46. Phloem in gymnosperms lacks:

A. Companion cells
B. Sieve tubes
C. Both A & B
D. Fibres

✅ Correct Answer: C. Both A & B

Explanation:

• A. Lacking.
• B. Lacking.
• C. Correct, gymnosperms have sieve cells but no sieve tubes/companion cells.
• D. Fibres present.

Q47. The food-conducting tissue in plants is called:

A. Xylem
B. Phloem
C. Cambium
D. Collenchyma

✅ Correct Answer: B. Phloem

Explanation:

• A. Water.
• B. Correct, phloem = food transport.
• C. Growth.
• D. Support.

Q48. The main difference between xylem and phloem is:

A. Xylem dead, phloem living
B. Xylem transports water, phloem transports food
C. Both A & B
D. None

✅ Correct Answer: C. Both A & B

Explanation:

• A. True.
• B. True.
• C. Correct, both differences valid.
• D. Wrong.

Q49. Which tissue is responsible for translocation in plants?

A. Xylem
B. Phloem
C. Collenchyma
D. Parenchyma

✅ Correct Answer: B. Phloem

Explanation:

• A. Ascent of sap (water).
• B. Correct, phloem translocates food.
• C. Support.
• D. Storage.

Q50. Which tissue has sieve plates?

A. Xylem vessels
B. Sieve tubes (Phloem)
C. Parenchyma
D. Collenchyma

✅ Correct Answer: B. Sieve tubes (Phloem)

Explanation:

• A. Vessels → No sieve plates.
• B. Correct, sieve tubes have perforated sieve plates.
• C, D → Not transport tissues.

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