PART - 1 - Unit III : CH - 10 Cell Cycle and Cell Division — BIOLOGY STD 11 Science — Question

The plant body in higher plants is well differentiated and well developed. Roots are the organs used for the purpose of absorption. What is the equivalent of roots in the less developed lower plants?

Write the simple equation of photosynthesis as given by Van Niel.

How is the shape of red blood cells in humans?

What is the effect of dengue fever on the platelets of blood in humans?

Mark the odd one in the following group.
Dryopteris, Adiantum, Lycopodium, Selaginella.

It is seen that RBC count is more in the persons living at high altitudes. Indicate the reason behind this.

Name the site in our body, where:

1. Dense irregular connective tissue is present.
2. Blood cells are produced.

Name any one intercellular factor that affects growth and differentiation.

What are the components of haemoglobin?

Name the group which lacks digestive tract.