Respiration In Plants — BIOLOGY STD 11 Science — Question

Write about Haldane effect. How does Haldane effect and Bohr effect complement each other?

Give a comparison of small intestine and large intestine.

What is the significance of vacuole in a plant cell?

What is the economic importance of fermentation?

Below is a list of plant fibres. From which part of the plant these are obtained (i) coir (ii) hemp (iii) cotton (iv) jute?

Pheretima posthuma is highly useful as:

1. Their burrows make the soil loose.
2. They make the soil porous, leave their castings and take organic debris in the soil.
3. They are used as fish meal.
4. They kill the birds due to biomagnification of chlorinated hydrocarbons.

Photosynthesis needs constant supply of water. But transpiration can hamper this supply. How do plants of desert area manage to get sufficient water in spite of faster transpiration?

How does a gap junction facilitate intercellular communication?

Indicate the two decarboxylation steps in Kreb's cycle.