Name the following that form the parts of a typical angiosperms ovule:

(i) The stalk that attaches it to the placenta in the ovary.

(ii) The layers that protect it. The mass of tissue enclosed by these layers.

(iii) The different types of cells present in its mature embryo sac.

OR

List the different parts of a typical dicotyledonous embryo along with their functions.

(i) Funiculus is the stalk that attaches ovule to the placenta in the ovary

(ii) Integuments are the outer layers which surrounds ovule and provide protection to the developing embryo.

(iii) A mature embryo sac contains the following cells: antipodal cells, central egg cell, and two polar nuclei.

OR

The different parts of typical dicotyledonous embryo are:

_• Plumule- is the embryonic shoot, it appears as a bud which gives rise to shoot and the remaining structure in the plant.

_• Cotyledons- contains high quantities of starch and will provide a source of food for the developing embryo prior to germination.

_• Radicle- is the embryonic root, which will develop into the primary root of the plant. Allows the seed to suck up water and send out its leaves to start photosynthesis

_• Seed coat- protects the seed from physical, temperature and water damage.

_• Hilum- is a scar left by the stalk which attached the ovule to the ovary wall before it became seed.

_• Micropyle- is a minute pore in tesla, and it permits water to enter the embryo before active germination.

Dig: Dicot seed