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Study the following statements and select the correct option.

(i) Tapetum nourishes the developing pollen grains.

(ii) Hilum represents the junction between ovule and funicle.

(iii) In aquatic plants such as water hyacinth and water lily, pollination is by insects.

(iv) The primary endosperm nucleus is triploid.

  • a)
    (i) and (ii) are correct but (iii) and (iv) are incorrect. 

  • b)
    (i) ,(ii) (iv) are correct but  (iii) are incorrect.

  • c)
    (ii), (iii) and (iv) are correct but (i) is incorrect. 

  • d)
    (i), (iii) and (iv) are correct but (ii) is incorrect. 

Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Study the following statements and select the correct option.(i) Tapet...
The correct option is   (i), (ii), (iv) correct; (iii) incorrect


Tapetum



Tapetum is the innermost layer of anther which protects and provides nourishment to the developing pollen.

Hence, the statement in option ‘a’ is correct.



Hilum



Hilum is the scar that represents the site where the funicle fuses with the body of the ovule.

Hence, the statement in option ‘b’ is correct.



Pollination of aquatic plants



Aquatic plants such as water hyacinth and water lily have flowers that emerge out of the water surface and are hence pollinated by wind or insects.

Hence, the statement in option ‘c’ is incorrect.



Primary endosperm nucleus



The primary endosperm nucleus is formed as a result of the fusion between one of the haploid (n) male gametes with the diploid (2n) secondary nucleus of the central cell and is hence triploid (3n) in nature.

Hence, the statement in option ‘d’ is correct.



Final answer

(i), (ii), (iv) correct; (iii) incorrect
This question is part of UPSC exam. View all NEET courses
Most Upvoted Answer
Study the following statements and select the correct option.(i) Tapet...
Explanation:
(i) Tapetum nourishes the developing pollen grains - This statement is correct. Tapetum is a nutritive tissue that surrounds the developing pollen grains and provides nutrition to them.
(ii) Hilum represents the junction between ovule and funicle - This statement is correct. Hilum is the point of attachment of the ovule to the funicle and represents the junction between the two.
(iii) In aquatic plants such as water hyacinth and water lily, pollination is by insects - This statement is incorrect. Aquatic plants such as water hyacinth and water lily are pollinated by water and not by insects.
(iv) The primary endosperm nucleus is triploid - This statement is correct. The primary endosperm nucleus is formed by the fusion of two polar nuclei with a sperm nucleus, resulting in a triploid nucleus.

Therefore, the correct option is (b) as all statements except (iii) are correct.
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Study the following statements and select the correct option.(i) Tapetum nourishes the developing pollen grains.(ii) Hilum represents the junction between ovule and funicle.(iii) In aquatic plants such as water hyacinth and water lily, pollination is by insects.(iv) The primary endosperm nucleus is triploid.a)(i) and (ii) are correct but (iii) and (iv) are incorrect.b)(i) ,(ii) (iv) are correct but (iii) are incorrect.c)(ii), (iii) and (iv) are correct but (i) is incorrect.d)(i), (iii) and (iv) are correct but (ii) is incorrect.Correct answer is option 'B'. Can you explain this answer?
Question Description
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