Arrange the given stages involved in the development of embryo in correct sequence.
A. Mature embryo
B. Heart-shaped embryo
C. Globular embryo
D. Zygote
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → D, C, B, A
D. Zygote — first. The zygote forms by fertilisation, when a male gamete fuses with the egg cell. It lies at the micropylar end of the embryo sac.
C. Globular embryo — second. The zygote divides to form the proembryo, which grows into a round (globular) embryo.
B. Heart-shaped embryo — third. In a dicot, the two cotyledons start to grow, and the embryo takes a heart shape.
A. Mature embryo — last. The embryo now has a clear embryonal axis with the radicle and plumule, and two cotyledons.
Note: A similar question was also asked in CUET (UG) 2026 on 29-05-2026 (Slot 2), on 26-05-2026 (Slot 2) and on 21-05-2026 (Slot 1), and in CUET (UG) 2025 on 23-05-2025 (Slot 2) and on 14-05-2025 (Slot 2).
NCERT Extract:
Embryo – “… Though the seeds differ greatly, the early stages of embryo development (embryogeny) are similar in both monocotyledons and dicotyledons. Figure 1.13 depicts the stages of embryogeny in a dicotyledonous embryo. The zygote gives rise to the proembryo and subsequently to the globular, heart-shaped and mature embryo.”
