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प्रश्न
Name the following:
Unicellular outgrowths from the epidermis of roots.
उत्तर
Root hair
Explanation:
From the root epidermis, these unicellular outgrowths help to draw minerals and water from the ground.
APPEARS IN
संबंधित प्रश्न
The figure given below is a diagrammatic representation of a part of the cross section of the root in the root hair zone. Study the same and then answer the questions that follow
(i) Name the parts indicated by the guidelines 1 to 4.
(ii) Which is the process that enables the passage of water from the soil into the root hair?
(iii) Name the pressure that is responsible for the movement of water in the direction indicated by the arrows. Define it.
(iv) Due to an excess of this pressure sometimes drops of water are found along the leaf margins of some plants especially in the early mornings. What is the phenomenon called?
(v) Draw a well labelled diagram of the root hair cell as it would appear if an excess of fertiliser is added to the soil close to it.
Study the diagram given below and answer the questions that follow:
- Name the process being studied in the above experiment.
- Explain the process mentioned in (a) above
- Why is oil placed over water?
- 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?
- Mention any three adaptations found in plants to foster the process mentioned in (a) above
How is root hair adapted for the absorption of water from the soil?
Choose the correct answer:
Absorption of water from soil takes place by __________
The diagram given below represents the result of an experiment conducted on two freshly taken shoots of a green herbaceous plant. The lower ends dip in the water.
(i) What is the aim of the experiment?
(ii) Some parts of the stem in both the shoots have been removed. Name the conducting tissue in shoot A and in shoot B, that has been removed.
(iii) What are the results of this experiment?
Give Technical Term for the following.
Tissue which transports manufactured food from leaves to other parts of the plant.
Root hair is ________ extension of epiblema cells.
Minerals cannot be passively absorbed by the roots.
Roots of the plants absorb water from the soil through the process of ____________.
