PART - 2 - Unit V : CH - 19 Chemical Coordination and Integration — BIOLOGY STD 11 Science — Question

Write the name of the cells line the spongocoel and the canals.

Write the names of any two inorganic components found in living tissues.

Name the group of plants, where:

1. Phloem parenchyma is absent.
2. Sieve tubes and companion cells are absent in the phloem.

What technical term is given to the type of chromosomes that has:

1. Two equal arms.
2. One arm much longer than the other.

How does spraying of sugarcane plants with gibberellins increase the yield of sugar?

If a person is fasting for a prolonged period, what will be the sequence of organic food to be digested by the body.

Mention how long does the cell division proper last in a human cell cycle and what per cent of duration of cell cycle does interphase last.

Why are members of Rhodophyceae called red algae?

Write two key features of Aves.

What is the role of adrenaline and noradrenaline?