PART - 2 - Unit V : CH - 15 Body Fluids and Circulation — BIOLOGY STD 11 Science — Question

In a class, teacher taught about the significance of water intake during summers. Teacher told children that water intake is valuable for healthy living and for proper digestion and excretion. Drinking enough water directly or through food helps the kidneys in their proper working.

1. What is osmoregulation?
2. Why we generally urinate fewer times in summer than in winter and the urine passed is usually thicker. Give the reason behind this statement.

What are the industrial uses of algae?

List the location of each of the valves of the heart.

1. Define the term vascular strand.
2. Name the type of vascular bundles in case of:

1. Root.
2. Stems and leaves.

Pneumatic bones are expected to be found in:

1. Pigeon.
2. House lizard.
3. Frog’s tadpole.
4. Flying fish.

Name the specific tissue that lines the bronchioles. State any one advantage of this tissue being present there.

Write any four important functions of the nervous system.

List the types of lichens.

If the olecranon process of the human radioulna bone is removed, what effect will it have?