Differential Stages of Development in Monocot and Dicot Embryo

Q. Read the following statements related to embryogeny in plants and select the incorrect statements.

I. The early stages of embryo development are different in monocotyledons and dicotyledons.
II. Most zygotes divide only after a certain amount of endosperm is formed to ensure nutrition to the developing embryo.
III. Endosperm is completely consumed by developing embryos before seed maturation in coconut.
IV. The zygote gives rise to the proembryo and subsequently to the globular, heart-shaped and mature embryo.

1. I, II and III
2. I and III only
3. II, III, and IV
4. III and IV only

Q.

Arrange the following stages of embryo development in dicots from earliest to latest.

1. (iv)-(ii)-(i)-(iii)

2. (iii)-(i)-(ii)-(iv)

3. (i)-(ii)-(iii)-(iv)

4. (ii)-(iv)-(i)-(iii)

Q. Identify the A, B, C, D, E and F in given figure -

1. A- Endosperm, B – Seed coat, C – Cotyledon, D – Shoot apical meristem, E – Hypocotyl root axis, F – Root tip
2. A- Seed coat, B – Hypocotyl root axis, C – Shoot apical meristem, D – Cotyledon, E – Root tip, F – Endosperm
   
3. A- Endosperm, B – Seed coat, C – Cotyledon, D – Shoot apical meristem, E – Root tip, F – Hypocotyl root axis
4. A- Seed coat, B – Endosperm, C – Cotyledon, D – Shoot apical meristem, E – Root tip, F – Hypocotyl root axis
   
   

Q. Which option among the following has the correct sequence of stages of dicot embryogeny?

1. Proembryo, mature embryo, globular embryo, heart-shaped embryo
2. Heart-shaped embryo, globular embryo, proembryo, mature embryo
3. Proembryo, heart-shaped embryo, globular embryo, mature embryo
4. Proembryo, globular embryo, heart-shaped embryo, mature embryo