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STD 12 - 1. sexual reproduction in flowering plants — Biology STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceBiologySTD 12 - 1. sexual reproduction in flowering plants1 Mark
MCQ
Egg apparatus of angiosperms consist of
  • A
    One synergid and two egg cells
  • ✓
    Two synergids and one egg cell
  • C
    One central cell, two polar nuclei and three antipodal cells
  • D
    One egg cell, two polar nuclei and three antipodal cells
✓

Answer

Correct option: B.
Two synergids and one egg cell
b
Two synegirds and one egg cell. Polygonum type of embryo sac is the most common in angiosperms. It is $7$ -celled and $8$ -nucleate. The nuclei are arranged in such a way that three organized at micropylar end and form egg apparatus (one egg and two synergides,) two nuclei migrate to centre and form polar nuclei in a single central cell and three nuclei at chalazal pole organized into antipodal cells

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