NEET PYQs – Chapter 3: Plant Kingdom ( PART 2)

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 Absolutely! Here's the continuation (Part 2) of the blog-style NEET PYQs from Chapter 3: Plant Kingdom — from Q31 to Q50 — complete with a clean heading and detailed explanations.

🌿 NEET PYQs – Chapter 3: Plant Kingdom

🔥 Top 50 Most Important Questions with Answers & Detailed Explanations

🧾 PART 2: Questions 31–50

31. In pteridophytes, fertilization requires:

  • A) Pollination

  • B) Wind

  • C) Water

  • D) Insects
    ✅ Answer: C) Water
    Explanation: Like bryophytes, pteridophytes require water for the movement of motile sperm to the egg for fertilization.

32. Which one is homosporous among the following?

  • A) Selaginella

  • B) Salvinia

  • C) Marsilea

  • D) Lycopodium
    ✅ Answer: D) Lycopodium
    Explanation: Lycopodium produces only one type of spore – making it homosporous. The rest are heterosporous.

33. Moss capsule opens by:

  • A) Lid

  • B) Peristome teeth

  • C) Operculum

  • D) All of these
    ✅ Answer: D) All of these
    Explanation: Moss capsules open by lid (operculum), revealing peristome teeth that help in gradual spore release.

34. Which plant shows the phenomenon of alternation of generation with independent gametophyte and sporophyte?

  • A) Pinus

  • B) Marchantia

  • C) Fern

  • D) Maize
    ✅ Answer: C) Fern
    Explanation: In pteridophytes like fern, both gametophyte and sporophyte are independent and photosynthetic.

35. Which algae is used as a food supplement and space food?

  • A) Chlorella

  • B) Spirogyra

  • C) Ulothrix

  • D) Volvox
    ✅ Answer: A) Chlorella
    Explanation: Chlorella is a protein-rich unicellular green alga used in food and space diets due to its high nutritional value.

36. Gemmae are involved in:

  • A) Sexual reproduction in algae

  • B) Asexual reproduction in liverworts

  • C) Fertilization in bryophytes

  • D) Vegetative propagation in gymnosperms
    ✅ Answer: B) Asexual reproduction in liverworts
    Explanation: Gemmae are special asexual reproductive structures found in liverworts like Marchantia.

37. Which group has the largest gametophyte?

  • A) Angiosperms

  • B) Gymnosperms

  • C) Pteridophytes

  • D) Bryophytes
    ✅ Answer: D) Bryophytes
    Explanation: Gametophyte is dominant and independent in bryophytes, unlike other plant groups.

38. First plant group to colonize land:

  • A) Algae

  • B) Bryophytes

  • C) Pteridophytes

  • D) Gymnosperms
    ✅ Answer: B) Bryophytes
    Explanation: Bryophytes are called "amphibians of the plant kingdom" as they were the first to colonize land.

39. Which plant is vascular and reproduces via spores?

  • A) Pinus

  • B) Fern

  • C) Marchantia

  • D) Maize
    ✅ Answer: B) Fern
    Explanation: Ferns are pteridophytes – they have vascular tissues but reproduce by spores, not seeds.

40. Gymnosperms are not characterized by:

  • A) Naked seeds

  • B) Well-developed vascular tissues

  • C) Fruits

  • D) Cones
    ✅ Answer: C) Fruits
    Explanation: Gymnosperms do not form fruits; seeds are exposed on cones or scales.

41. Motile gametes are absent in:

  • A) Volvox

  • B) Funaria

  • C) Ulothrix

  • D) Cycas
    ✅ Answer: D) Cycas
    Explanation: While Cycas has flagellated sperm, they are non-motile in the external environment. In seed plants, male gametes are delivered via pollen tube.

42. Pollen grains are produced by:

  • A) Archegonia

  • B) Anther

  • C) Ovule

  • D) Embryo sac
    ✅ Answer: B) Anther
    Explanation: In gymnosperms and angiosperms, pollen grains (male gametophytes) develop in the anther.

43. Algae with two unequal flagella is:

  • A) Spirogyra

  • B) Chlamydomonas

  • C) Euglena

  • D) Ectocarpus
    ✅ Answer: D) Ectocarpus
    Explanation: Brown algae like Ectocarpus have two unequal (heterokont) flagella used for movement.

44. Endosperm in gymnosperms is:

  • A) Triploid

  • B) Diploid

  • C) Haploid

  • D) Absent
    ✅ Answer: C) Haploid
    Explanation: Gymnosperm endosperm is formed before fertilization and is haploid (female gametophyte tissue).

45. Which plant lacks both xylem and phloem?

  • A) Fern

  • B) Moss

  • C) Cycas

  • D) Maize
    ✅ Answer: B) Moss
    Explanation: Moss (a bryophyte) lacks vascular tissues; water is conducted via simple cell-to-cell diffusion.

46. Female gametophyte is retained within the sporophyte in:

  • A) Pteridophytes

  • B) Gymnosperms

  • C) Bryophytes

  • D) Algae
    ✅ Answer: B) Gymnosperms
    Explanation: In gymnosperms, the female gametophyte develops within the ovule (retained inside the sporophyte).

47. Chloroplasts in green algae contain:

  • A) Chlorophyll a only

  • B) Chlorophyll a and d

  • C) Chlorophyll a and b

  • D) Chlorophyll a and c
    ✅ Answer: C) Chlorophyll a and b
    Explanation: Green algae contain both chlorophyll a and b like higher plants.

48. Seed habit first appeared in:

  • A) Pteridophytes

  • B) Bryophytes

  • C) Gymnosperms

  • D) Angiosperms
    ✅ Answer: C) Gymnosperms
    Explanation: Gymnosperms were the first vascular plants to evolve seeds (naked seeds).

49. Selaginella is considered important evolutionarily because:

  • A) It's vascular

  • B) It is heterosporous

  • C) It has gemmae

  • D) It has cones
    ✅ Answer: B) It is heterosporous
    Explanation: Selaginella shows heterospory, a crucial step towards seed habit and the evolution of seed plants.

50. Brown algae have:

  • A) Fucoxanthin

  • B) Phycoerythrin

  • C) Phycocyanin

  • D) Xanthophyll
    ✅ Answer: A) Fucoxanthin
    Explanation: Brown algae (Phaeophyceae) contain fucoxanthin, giving them their characteristic brown color.

👉 Follow @neetpyqall for more such powerful NEET PYQ breakdowns, tips, and biology hacks to ace NEET 2025! 💯💪📚


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