Medicneet Logo
NEET 2019 · BiologyPrevious Year Question

What is the fate of the male gametes discharged in the synergid? (NEET 2019)

Answer: (D) (4) One fuses with the egg and other fuses with central cell nuclei.. Answer: D.

  1. A.(1) One fuses with egg other(s) degenerate(s) in the synergid.
  2. B.(2) All fuse with the egg.
  3. C.(3) One fuses with the egg, other(s) fuse(s) with synergid nucleus.
  4. D.(4) One fuses with the egg and other fuses with central cell nuclei.✓

Correct Answer

(D) (4) One fuses with the egg and other fuses with central cell nuclei.

Solution & Explanation

Answer: D. After the pollen tube discharges the two male gametes into a synergid, one male gamete fuses with the egg (syngamy) and the other moves to the central cell and fuses with the two polar nuclei (triple fusion). So one fuses with the egg and the other fuses with the central cell nuclei. The synergid is the delivery site, not where a gamete fuses. NCERT: Ch 1, p.18, lines 16-21 — "One of the male gametes moves towards the egg cell and fuses with its nucleus thus completing the syngamy. ... The other male gamete moves towards the two polar nuclei located in the central cell and fuses with them to produce a triploid primary endosperm nucleus (PEN)".

🎯
43,000+ questions in हिंदी & English · one-tap toggle
Practice NEET 2019 Biology — free, with instant solutions
43,000+ NEET questions solved step-by-step, chapter-wise, in the MedicNEET app.
📚Practice all NEET Biology PYQs chapter-wise →💡Don't get it? Learn the Sexual Reproduction in Flowering Plants concepts →
← Biology Q35Biology Q37 →

More NEET PYQ solutions

BiolWhich one of the following is an example of ex-situ conservation?BiolWhich of the following is an example of a zygomorphic flower? (NEET 2025)BiolWhich of the following is an example of actinomorphic flower? (NEET 2024)BiolIn the seeds of cereals, the outer covering of endosperm separates the embryo by a protein-rich layer called : (NEET 2025)BiolGiven below are two statements: Statement I : In a floral formula the symbol [percentage/division-type symbol] stands for zygomorphic nature of the flower, and G with a bar above it stands for inferior ovary. Statement II : In a floral formula the symbol [same symbol] stands for actinomorphic nature of the flower and G with a bar below it stands for superior ovary. In the light of the above statements, choose the correct answer from the options given below: (NEET 2025)BiolMatch List I with List II: List I — A. Scutellum; B. Non-albuminous seed; C. Epiblast; D. Perisperm. List II — I. Persistent nucellus; II. Cotyledon of Monocot seed; III. Groundnut; IV. Rudimentary cotyledon. Choose the option with all correct matches. (NEET 2025)BiolGiven below are the stages in the life cycle of pteridophytes. Arrange the following stages in the correct sequence. A. Prothallus stage B. Meiosis in spore mother cells C. Fertilisation D. Formation of archegonia and antheridia in gametophyte. E. Transfer of antherozoids to the archegonia in presence of water. Choose the correct answer from the options given below:BiolThe correct sequence of events in the life cycle of bryophytes is A. Fusion of antherozoid with egg. B. Attachment of gametophyte to substratum. C. Reduction division, to produce haploid spores. D. Formation of sporophyte. E. Release of antherozoids into water. Choose the correct answer from the options given below:
More: All NEET 2019 Biology PYQs · NEET Biology PYQs · All NEET PYQs · Previous year papers