BIOLOGY [3 marks Question Answer]

The various adaptation in seeds dispersed by animals are:
1. Some projections like hooks, barbs, spines, bristles, and stiff hair are present on the surface of seeds which get attached to the skin of animals and carried to distant places and hence dispersed.
2. Seeds are embedded in fleshy and edible fruits in some plants that attract animals to eat them.
3. The seed itself can also become an attractive food for animals like squirrels and acoms.

A leaf has the following main parts:
1. Leaf stalk or petiole -It joins the leaf with the stem of the
2. Leaf base -The point where a leaf is attached to the stem.
3. Lamina or leaf blade-Flat, green, expanded portion of the leaf.
4. Midrib-Petiole extends into the leaf along its center as the midrib. Many veins arise from it.

Functions of the roots are:
1. They fix the plant firmly to the soil.
2. They absorb water and minerals from the soil and transport it to the leaves through stem for the manufacturing of food.
3. Roots help in holding the soil together and prevent soil erosion.
4. In some modified roots, they perform the function of storing food. e.g. Radish, carrot.
5. Roots can also help in respiration in certain plants like mangroves.