100+ Interesting Biology Questions and Answers - 3

Question: 11

What is phylloclade?

Phylloclade is a green, flattened stem, which performs the function of photosynthesis. It also stores water and mucilage. The leaves are modified into spines to reduce transpiration.

Question: 12

What are suicidal bags?

Lysosomes are called suicidal bags. These are spherical vesicles present in the cytoplasm.

These enclose digestive enzymes which are involved in extra cellular and intra cellular digestion.

So these are called suicidal bags.

Question: 13

What is turgor pressure?

As a result of Endosmosis, a pressure is developed which press the protoplasm against the cell wall and the cell becomes turgid.

The pressure is called as turgor pressure.

Question: 14

Define root pressure?

When water enters into xylem from pericycle a pressure is developed in the xylem of roots which can rise the water to certain level.

This pressure is known as root pressure.

Question: 15

What are auxins?

Auxins are natural growth hormones synthesised in the meristematic regions or growing tips.

They are produced by the plant in very small quantities.