Concept of Absorption by the Roots

Study the diagram given below and answer the questions that follow:

1. Name the process being studied in the above experiment.
2. Explain the process mentioned in (a) above
3. Why is oil placed over water?
4. What do we observe with regard to the level of water when this set-up is placed in (1) bright sunlight, (2) humid conditions and (3) windy days?
5. Mention any three adaptations found in plants to foster the process mentioned in (a) above

The diagram given below represents a plant cell after being placed in a strong sugar solution. Guidelines 1 to 5 indicate the following:
1. Strong sugar solution
2. Cell wall
3. Protoplasm
4. Large vacuole
5. Nucleus
Study the diagram and answer the questions that follow:
(i) What is the state of the cell shown in the diagram?
(ii) Name the structure which acts as a selectively permeable membrane.
(iii) If the cell had been placed in distilled water instead of strong sugar solution which feature would not have been present?
(iv) If the cell in the diagram possessed chloroplasts where would these be present?
(v) Name any one feature of this plant cell which is not present in animal cells.

Mention whether the following statement is true (T) or false (F) and give an explanation in support of your answer.

If the phloem of a twig is removed keeping the xylem intact, the leaves of a twig wilt.

Which one of the following is a characteristic NOT related with the suitability of the roots for absorbing water?

Choose the correct answer:

Exudation or bleeding is associated with ___________

Name the following:

The kind of cells that constitute the cortex of a root.

The diagram below represents a layer of epidermal cells showing a fully grown root hair. Study the diagram and answer the questions that follow:

The root hair cell is in a turgid state. Name and explain the process that caused this state.