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प्रश्न
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उत्तर
(i) The epidermis and endodermis of root hairs are permeable to water.
(ii) Root hairs have a very large surface area.
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संबंधित प्रश्न
Mention whether the following statement is true or false. Correct the false statement by altering the last word only.
Xylem is the water conducting tissue in plants.
Give reason for the following:
If you uproot a plant from the soil, its leaves soon wilt.
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
The alongside diagram A shows a root hair growing through the soil particles. Diagram B is the root hair of an aquatic plant.
(i) Name the parts 1,2,3.
(ii) Name two substances which enter the root hair. What are their uses?
(iii) By what process do these substances enter the root hair?
(iv) Account for the different shapes of root hairs in the two diagrams.
Give Technical Term for the following.
Tissue which transports manufactured food from leaves to other parts of the plant.
What is the composition of an outer layer of root hair?
Root hairs are ______
What would happen to the leaves of a plant that transpires more water than its absorption in the roots?
Epiphytic plants like orchids absorb water vapours from air with the help of ______ having special tissue called velamen.
Aquatic animals like fish excrete their wastes in gaseous form as ______.
