50 Most Important NEET PYQs of Chapter 5: Morphology of Flowering Plants (With Detailed Solutions) Part 1 (Q1–25) | By neetpyqall

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🌱 50 Most Important NEET PYQs of Chapter 5: Morphology of Flowering Plants (With Detailed Solutions) – Part 1 (Q1–25) | By neetpyqall

If you're preparing for NEET, Chapter 5 Morphology of Flowering Plants is a scoring topic with direct and factual questions. Here are 25 highly important previous year questions (PYQs) with detailed answers and explanations to make your revision easier and more effective.

1. Which one of the following pairs is not correctly matched?

A) Maize – Caryopsis
B) Tomato – Berry
C) Apple – Drupe
D) Cucumber – Pepo
✅ Answer: C) Apple – Drupe
Explanation: Apple is a false fruit derived from the thalamus, and it's classified as a pome, not a drupe.

2. The placentation in tomato is:

A) Axile
B) Parietal
C) Free central
D) Basal
✅ Answer: A) Axile
Explanation: Tomato has axile placentation where ovules are attached to the central axis in a multilocular ovary.

3. Which floral formula represents a member of the Fabaceae family?

A) ⚥ K(5), C1+2+(2), A(9)+1, G1
B) ⚥ K5, C5, A5, G(2)
C) ⚥ K(5), C(5), A(5), G(2)
D) ⚥ K(5), C(5), A(10), G(1)
✅ Answer: A) ⚥ K(5), C1+2+(2), A(9)+1, G1
Explanation: This floral formula shows zygomorphic flowers with vexillary aestivation – a typical feature of Fabaceae.

4. Maize grain is a fruit as well as seed because:

A) It has seed coat
B) It has two cotyledons
C) Pericarp is fused with seed coat
D) It has endosperm
✅ Answer: C) Pericarp is fused with seed coat
Explanation: In maize (a caryopsis), the seed coat and fruit wall (pericarp) are fused.

5. A pair of edible underground stem modifications is:

A) Rhizome and corm
B) Tuber and bulb
C) Rhizome and tuber
D) Bulb and corm
✅ Answer: C) Rhizome and tuber
Explanation: Both rhizome (e.g., ginger) and tuber (e.g., potato) are edible underground stem modifications.

6. In roots, the arrangement of vascular bundles is:

A) Radial
B) Conjoint
C) Collateral
D) Bicollateral
✅ Answer: A) Radial
Explanation: In roots, xylem and phloem are present on different radii, forming radial vascular bundles.

7. Adventitious roots are found in:

A) Mustard
B) Mango
C) Grass
D) Gram
✅ Answer: C) Grass
Explanation: Grass has adventitious roots arising from nodes instead of the radicle.

8. Which of the following is a stem modification for food storage?

A) Carrot
B) Turnip
C) Potato
D) Sweet potato
✅ Answer: C) Potato
Explanation: Potato is a stem tuber, storing starch and showing stem features like nodes and buds.

9. Which of the following has winged fruits?

A) Mustard
B) Drumstick
C) Guava
D) Mango
✅ Answer: B) Drumstick
Explanation: Drumstick has winged seeds/fruits dispersed by wind.

10. The edible part of apple is:

A) Endosperm
B) Pericarp
C) Mesocarp
D) Thalamus
✅ Answer: D) Thalamus
Explanation: Apple is a false fruit, and the fleshy edible part is the thalamus.

11. Which of the following is a modification of root for storage?

A) Potato
B) Ginger
C) Sweet potato
D) Onion
✅ Answer: C) Sweet potato
Explanation: Sweet potato is a modified root storing food.

12. Onion is a:

A) Modified leaf
B) Modified stem
C) Root
D) Fruit
✅ Answer: B) Modified stem
Explanation: Onion is a bulb – an underground stem modification with fleshy leaf bases.

13. The function of lenticels is:

A) Transpiration
B) Transport of minerals
C) Photosynthesis
D) Gaseous exchange
✅ Answer: D) Gaseous exchange
Explanation: Lenticels are openings in woody stems for gas exchange.

14. Which of these is a leaf modification for support?

A) Tendril of pea
B) Thorn of citrus
C) Spine of cactus
D) Pitcher of Nepenthes
✅ Answer: A) Tendril of pea
Explanation: Pea tendrils are modified leaves for climbing.

15. The main function of root hairs is:

A) Anchorage
B) Conduction
C) Water absorption
D) Reproduction
✅ Answer: C) Water absorption
Explanation: Root hairs increase surface area for absorption of water and minerals.

16. Rhizome is found in:

A) Carrot
B) Ginger
C) Turnip
D) Sweet potato
✅ Answer: B) Ginger
Explanation: Ginger is a rhizome – a horizontal underground stem with nodes and internodes.

17. Which of the following represents a racemose inflorescence?

A) Mustard
B) Coral vine
C) China rose
D) Pea
✅ Answer: A) Mustard
Explanation: Racemose inflorescence has flowers in an acropetal arrangement, found in mustard.

18. Which of the following is a true fruit?

A) Apple
B) Banana
C) Strawberry
D) Mango
✅ Answer: D) Mango
Explanation: Mango develops from ovary only and is a true fruit, specifically a drupe.

19. Which is a characteristic of dicot roots?

A) Polyarch xylem
B) Conjoint vascular bundles
C) Pith is well developed
D) Exarch xylem
✅ Answer: D) Exarch xylem
Explanation: In dicot roots, the protoxylem lies towards the periphery – exarch condition.

20. Which is a modification of leaf for food trapping?

A) Cactus spine
B) Pea tendril
C) Pitcher of Nepenthes
D) Onion bulb
✅ Answer: C) Pitcher of Nepenthes
Explanation: The leaf of Nepenthes is modified into a pitcher to trap insects.

21. Which type of venation is found in monocots?

A) Reticulate
B) Parallel
C) Palmate
D) Pinnate
✅ Answer: B) Parallel
Explanation: Monocots have parallel venation in their leaves.

22. In China rose, the floral parts are:

A) Zygomorphic and hypogynous
B) Actinomorphic and epigynous
C) Actinomorphic and hypogynous
D) Zygomorphic and perigynous
✅ Answer: C) Actinomorphic and hypogynous
Explanation: Hibiscus (China rose) has radial symmetry and a superior ovary (hypogynous).

23. Vexillary aestivation is found in:

A) China rose
B) Mustard
C) Pea
D) Datura
✅ Answer: C) Pea
Explanation: Pea flowers show vexillary aestivation – standard, wings, and keel.

24. The arrangement of ovules on the placenta is called:

A) Pollination
B) Placentation
C) Aestivation
D) Venation
✅ Answer: B) Placentation
Explanation: Placentation is the arrangement of ovules inside the ovary.

25. Which plant shows phylloclade?

A) Opuntia
B) Pea
C) Maize
D) Mustard
✅ Answer: A) Opuntia
Explanation: In Opuntia, the stem is modified into a flattened green structure called phylloclade for photosynthesis.

✅ Up Next: Part 2 with Questions 26–50
Stay tuned for the second half of this PYQ series, only on neetpyqall!

📘 Don’t forget to visit:
👉 https://biologyatease1.blogspot.com
👉 https://neetpyqall.blogspot.com


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