Anatomy of Flowering Plants — BIOLOGY STD 11 Science — Question

Akanksha, while walking in the garden in the morning with her mother observed two water drops falling on the ground. She thought that it is raining. Being curious, she started finding the source of the watery fluid. Then she observed drops falling from the leaves tip. She asked her mother, who was a botanist about this. The mother explained her that it is not due to the rain instead the water drops are dripping due to the phenomenon called guttation.

1. What are hydathodes? Why are these called water glands?
2. Where are hydathodes present?
3. Name the process of water loss occurring via hydathodes.
4. What value is displayed by Akanksha's nature?

Explain heart sounds.

List out the differences between Monera and Protista.

(i) In aerobic respiration the respiratory coefficient is infinite. Please explain.
(ii) Define the following: (a) Floating respiration (b) Protoplasmic respiration (c) External respiration (d) Internal respiration.

If one debarks a tree, what parts of the plant is being removed?

How does biodiversity of a geographical location influence the classification of plant and animal species present in that location?

What is bark? What are its different types?

Transpiration is a necessary evil in plants. Explain.

List out any six general features of cartilaginous fishes.

Give the scientific terms for the following:

1. Loss of water from leaves through stomata in the form of water vapour.
2. Movement of water in roots exclusively through the cell wall.
3. Water adsorbed by solids, causing them to enormously increase in volume.