50 Most Important NEET PYQs of Chapter 6: Anatomy of Flowering Plants – Part 1 (Q1–25) | By neetpyqall

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🌿 50 Most Important NEET PYQs of Chapter 6: Anatomy of Flowering Plants – Part 1 (Q1–25) | By neetpyqall

Here are the Top 50 Previous Year Questions from the chapter Anatomy of Flowering Plants – specially selected and explained to help you master this scoring topic for NEET! This is Part 1, covering Questions 1 to 25.

1. The Casparian strip is found in:

A) Epidermis
B) Cortex
C) Endodermis
D) Pericycle
✅ Answer: C) Endodermis
Explanation: Casparian strips are bands of suberin present in the endodermal cell walls that prevent passive flow of water.

2. Which of the following plant tissues lacks a nucleus at maturity?

A) Companion cells
B) Vessel elements
C) Sieve tube cells
D) Parenchyma
✅ Answer: B) Vessel elements
Explanation: Mature vessel elements are dead and lack a nucleus.

3. Collenchyma is characterized by:

A) Thin walls and dead protoplasm
B) Thick walls and no living protoplasm
C) Unevenly thickened walls and living protoplasm
D) Uniform thickening of wall and dead protoplasm
✅ Answer: C) Unevenly thickened walls and living protoplasm
Explanation: Collenchyma has thickened corners for mechanical support and retains living protoplasm.

4. The function of companion cells is to:

A) Transport water
B) Provide mechanical support
C) Help in translocation of food
D) Store starch
✅ Answer: C) Help in translocation of food
Explanation: Companion cells assist sieve tube elements in transport by maintaining pressure gradient.

5. Which meristem helps in increasing the girth of plant?

A) Apical
B) Intercalary
C) Lateral
D) Primary
✅ Answer: C) Lateral
Explanation: Lateral meristems like vascular cambium and cork cambium increase the diameter (girth) of plants.

6. The tracheids differ from vessels in:

A) Having bordered pits
B) Being shorter and wider
C) Being non-lignified
D) Having open ends
✅ Answer: A) Having bordered pits
Explanation: Tracheids have bordered pits and are narrower than vessels; vessels have perforated ends.

7. The tissue that makes up most of the wood is:

A) Secondary xylem
B) Primary xylem
C) Phloem
D) Cambium
✅ Answer: A) Secondary xylem
Explanation: Wood is mainly made of secondary xylem produced during secondary growth.

8. Cork is formed from:

A) Phelloderm
B) Phellogen
C) Phloem
D) Cortex
✅ Answer: B) Phellogen
Explanation: Cork cambium (phellogen) forms cork (phellem) on the outer side.

9. Which plant tissue helps in healing of wounds?

A) Collenchyma
B) Xylem
C) Meristem
D) Phloem
✅ Answer: C) Meristem
Explanation: Meristematic tissues retain the ability to divide and help in wound healing and regeneration.

10. The growth ring in trees is due to:

A) Apical meristem
B) Intercalary meristem
C) Lateral meristem
D) All the above
✅ Answer: C) Lateral meristem
Explanation: Annual rings in woody plants are formed due to seasonal activity of vascular cambium (a lateral meristem).

11. In monocot stems, vascular bundles are:

A) Collateral, open, arranged in ring
B) Scattered, closed
C) Collateral, closed, arranged in ring
D) Radial, open
✅ Answer: B) Scattered, closed
Explanation: Monocot stems have scattered vascular bundles which are closed due to lack of cambium.

12. Which of the following tissues is not found in the bark?

A) Cork
B) Secondary phloem
C) Phelloderm
D) Secondary xylem
✅ Answer: D) Secondary xylem
Explanation: Bark includes all tissues outside vascular cambium. Secondary xylem is part of wood, not bark.

13. The radial arrangement of xylem and phloem is found in:

A) Monocot stem
B) Dicot stem
C) Root
D) Leaf
✅ Answer: C) Root
Explanation: In roots, xylem and phloem lie on alternate radii – radial arrangement.

14. Bulliform cells are found in:

A) Dicot leaf
B) Monocot leaf
C) Stem
D) Root
✅ Answer: B) Monocot leaf
Explanation: Bulliform cells in monocots help in rolling/unrolling of leaves to minimize water loss.

15. The cork cambium originates from:

A) Epidermis
B) Cortex
C) Phloem
D) Pericycle
✅ Answer: B) Cortex
Explanation: Cork cambium (phellogen) usually arises from outer layers of cortex during secondary growth.

16. In dicot stem, vascular bundles are:

A) Closed and scattered
B) Open and arranged in a ring
C) Closed and in a ring
D) Radial and open
✅ Answer: B) Open and arranged in a ring
Explanation: Dicot stems have open vascular bundles arranged in a ring to allow secondary growth.

17. The tissue which provides mechanical strength to mature plant organs is:

A) Collenchyma
B) Parenchyma
C) Sclerenchyma
D) Phloem
✅ Answer: C) Sclerenchyma
Explanation: Sclerenchyma has thick lignified walls, providing rigidity and support.

18. Which of the following cells are living and thin-walled?

A) Sclerenchyma
B) Collenchyma
C) Parenchyma
D) Vessels
✅ Answer: C) Parenchyma
Explanation: Parenchyma is living, thin-walled, and versatile in function.

19. Which of the following shows closed vascular bundles?

A) Dicot root
B) Dicot stem
C) Monocot stem
D) Monocot root
✅ Answer: C) Monocot stem
Explanation: Closed vascular bundles lack cambium and therefore no secondary growth – typical in monocots.

20. Lenticels are involved in:

A) Water absorption
B) Water loss
C) Gaseous exchange
D) Mechanical support
✅ Answer: C) Gaseous exchange
Explanation: Lenticels allow exchange of gases between internal tissues and atmosphere.

21. The type of vascular bundle in dicot roots is:

A) Conjoint, collateral
B) Conjoint, closed
C) Radial
D) Bicollateral
✅ Answer: C) Radial
Explanation: Dicot roots show radial arrangement of xylem and phloem on alternate radii.

22. Interfascicular cambium is formed from:

A) Parenchyma between vascular bundles
B) Xylem
C) Phloem
D) Pith
✅ Answer: A) Parenchyma between vascular bundles
Explanation: Interfascicular cambium arises from medullary rays between vascular bundles.

23. The innermost layer of cortex is:

A) Endodermis
B) Pericycle
C) Phloem
D) Epidermis
✅ Answer: A) Endodermis
Explanation: Endodermis separates cortex from stele and often has Casparian strips.

24. Vessels are found in all except:

A) Gymnosperms
B) Angiosperms
C) Monocots
D) Dicots
✅ Answer: A) Gymnosperms
Explanation: Vessels are mostly absent in gymnosperms (except Gnetales), present in angiosperms.

25. The cambium in between xylem and phloem of dicot stem is:

A) Interfascicular
B) Fascicular
C) Both A and B
D) None
✅ Answer: C) Both A and B
Explanation: Fascicular cambium (inside vascular bundles) and interfascicular cambium (between them) together form the complete ring.


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