Arrange the following structures of embryo sac starting from micropylar to chalazal end.
A. Synergids
B. Filiform apparatus
C. Antipodals
D. Polar nuclei
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → B, A, D, C
(B) Filiform apparatus — First. These are thickenings on the synergids at the micropylar tip, the very end of the embryo sac. They guide the pollen tube in.
(A) Synergids — Second. The two synergids and the egg cell form the egg apparatus at the micropylar end.
(D) Polar nuclei — Third. The two polar nuclei lie in the large central cell, below the egg apparatus.
(C) Antipodals — Fourth. The three antipodal cells sit at the chalazal end, opposite the micropyle.
Note: A similar question was also asked in CUET (UG) 2026 on 29-05-2026 (Slot 1), and in CUET (UG) 2025 on 20-05-2025 (Slot 1).
NCERT Extract:
The Pistil, Megasporangium (ovule) and Embryo Sac – …
