50 Most Important NEET PYQs of Chapter 5: Morphology of Flowering Plants – Part 2 (Q26–50) | By neetpyqall

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🌱 50 Most Important NEET PYQs of Chapter 5: Morphology of Flowering Plants – Part 2 (Q26–50) | By neetpyqall

Let’s continue with the remaining 26 to 50 NEET Previous Year Questions (PYQs) from Chapter 5: Morphology of Flowering Plants, along with detailed answers and explanations to help you master the concepts!

26. Which of the following is not a type of placentation?

A) Marginal
B) Basal
C) Free central
D) Axillary
✅ Answer: D) Axillary
Explanation: “Axillary” is related to the position of buds/inflorescence, not placentation. The correct term is axile for placentation.

27. The fruit formed without fertilization of ovary is called:

A) False fruit
B) True fruit
C) Parthenocarpic fruit
D) Composite fruit
✅ Answer: C) Parthenocarpic fruit
Explanation: Parthenocarpy leads to seedless fruits like banana formed without fertilization.

28. Which of the following is a multiple fruit?

A) Apple
B) Pineapple
C) Mango
D) Banana
✅ Answer: B) Pineapple
Explanation: Pineapple is a multiple (composite) fruit formed from an inflorescence.

29. Which part of the mustard plant is edible?

A) Root
B) Flower
C) Leaf
D) All of these
✅ Answer: D) All of these
Explanation: In mustard, the leaves, seeds, and even tender stems are consumed.

30. In legumes, the placentation is:

A) Basal
B) Marginal
C) Axile
D) Parietal
✅ Answer: B) Marginal
Explanation: In legumes like pea, ovules are borne along the margin in a single row — marginal placentation.

31. A spike with sessile flowers is found in:

A) Sunflower
B) China rose
C) Amaranthus
D) Mustard
✅ Answer: C) Amaranthus
Explanation: In Amaranthus, the inflorescence is spike-like with sessile flowers.

32. A leaf modified into a tendril is seen in:

A) Mango
B) Pea
C) Mustard
D) Maize
✅ Answer: B) Pea
Explanation: In pea, terminal leaflets are modified into tendrils to help in climbing.

33. Which floral part is modified into pappus in sunflower?

A) Sepals
B) Petals
C) Stamens
D) Carpels
✅ Answer: A) Sepals
Explanation: In the Asteraceae family (sunflower), sepals are modified into hairy structures called pappus for seed dispersal.

34. Which of these is an underground stem?

A) Carrot
B) Turnip
C) Potato
D) Sweet potato
✅ Answer: C) Potato
Explanation: Potato is an underground stem tuber with nodes (eyes) and internodes.

35. Aerial modification of stem is seen in:

A) Ginger
B) Banana
C) Mint
D) Tendrils of grape
✅ Answer: D) Tendrils of grape
Explanation: In grapes, the stem is modified into coiled tendrils to help in climbing.

36. Which structure is common in both dicot and monocot roots?

A) Pith
B) Exarch xylem
C) Polyarch condition
D) Cambium
✅ Answer: B) Exarch xylem
Explanation: In both root types, protoxylem lies towards the periphery – called exarch arrangement.

37. The floral formula of Solanaceae is:

A) ⚥ K(5), C(5), A5, G(2)
B) ⚥ K(5), C1+2+(2), A(9)+1, G1
C) ⚥ K5, C5, A5, G(2)
D) ⚥ K(5), C(5), A(5), G(1)
✅ Answer: A) ⚥ K(5), C(5), A5, G(2)
Explanation: This is the floral formula of Solanaceae (e.g., brinjal, tomato).

38. In epigynous flowers, ovary is:

A) Superior
B) Inferior
C) Half-inferior
D) None
✅ Answer: B) Inferior
Explanation: In epigynous flowers like guava, ovary is located below the other floral parts.

39. The edible part of banana is derived from:

A) Epicarp
B) Endocarp
C) Pericarp and fleshy seed coat
D) Pericarp and unfertilized ovary
✅ Answer: D) Pericarp and unfertilized ovary
Explanation: Banana is parthenocarpic and the edible part is the ovary wall (pericarp).

40. Which of the following is not a root modification?

A) Sweet potato
B) Turnip
C) Carrot
D) Potato
✅ Answer: D) Potato
Explanation: Potato is a stem modification, not a root.

41. Phyllode is found in:

A) Opuntia
B) Asparagus
C) Australian Acacia
D) Euphorbia
✅ Answer: C) Australian Acacia
Explanation: In Acacia, petiole is flattened to form phyllode and carry out photosynthesis.

42. Which plant has spines as modified leaves?

A) Cactus
B) Pea
C) Mint
D) Mango
✅ Answer: A) Cactus
Explanation: In cactus, leaves are reduced to spines to reduce water loss.

43. Zygomorphic flower is seen in:

A) China rose
B) Datura
C) Pea
D) Mustard
✅ Answer: C) Pea
Explanation: Zygomorphic flowers can be divided into two equal halves only in one plane – seen in pea.

44. Which family shows valvate aestivation?

A) Solanaceae
B) Fabaceae
C) Malvaceae
D) Brassicaceae
✅ Answer: D) Brassicaceae
Explanation: Members of Brassicaceae show valvate aestivation in their petals and sepals.

45. Which type of fruit is formed in brinjal?

A) Drupe
B) Berry
C) Pome
D) Pepo
✅ Answer: B) Berry
Explanation: Brinjal (Solanaceae) develops a berry-type fleshy fruit.

46. In hypogynous flower, the ovary is:

A) Inferior
B) Superior
C) Half inferior
D) None
✅ Answer: B) Superior
Explanation: In hypogynous flowers (e.g., mustard, china rose), ovary sits above all floral parts.

47. The type of aestivation in Calotropis is:

A) Imbricate
B) Vexillary
C) Twisted
D) Valvate
✅ Answer: D) Valvate
Explanation: In Calotropis (Apocynaceae), sepals and petals show valvate aestivation.

48. Which of the following plants has reticulate venation?

A) Banana
B) Maize
C) Wheat
D) Mango
✅ Answer: D) Mango
Explanation: Reticulate venation is characteristic of dicots like mango.

49. Which structure helps Opuntia survive in desert?

A) Modified roots
B) Phylloclade
C) Spines
D) Bulb
✅ Answer: B) Phylloclade
Explanation: In Opuntia, stem is modified into flattened phylloclade for photosynthesis and water storage.

50. Which of these is an example of a climber?

A) Mango
B) Mustard
C) Pea
D) Banyan
✅ Answer: C) Pea
Explanation: Pea is a climber using leaf tendrils for support.

📚 That's a wrap on the 50 Most Important PYQs of Morphology of Flowering Plants!
For more NEET-targeted biology questions and solutions:

👉 Follow neetpyqall.blogspot.com
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📌 Stay tuned for more chapters, and keep revising smart!


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