Transport in Plants — BIOLOGY STD 11 Science — Question

Below is a list of plant fibres. From which part of the plant these are obtained?

1. Coir.
2. Hemp.
3. Cotton.
4. Jute.

Draw a labelled diagram of the adrenal gland and section showing two parts of adrenal gland.

Briefly describe the following: Anaemia.

Describe the following: Chiasmata Draw a diagram to illustrate your answer.

State the route of foul air from the lungs to outside. Also state whether TV increases or decreases during excitement and activity.

Which one of the following is NOT a characteristic of phylum Annelida?

1. Ventral nerve cord.
2. Closed circulatory system.
3. Segmentation.
4. Pseudocoelom.

In which one of the following sets of animals do all the four give birth to young ones?

1. Lion, bat, whale, ostrich.
2. Platypus, penguin, bat, hippopotamus.
3. Shrew, bat, cat, kiwi.
4. Kangaroo, hedgehog, dolphin, loris.

Which one of the following is a non-poisonous snake?

1. Cobra.
2. Viper.
3. Python.
4. Krait.

Correct the statements given below and rewrite them:

1. Cells shrink in hypotonic solutions and swell in hypertonic solutions.
2. Imbibition is a special type of diffusion which occurs when water is absorbed by living cells.
3. Most of the water flows in the roots occurs via the symplast.

What do you understand by splitting of water and its importance in photosynthesis?