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प्रश्न
Which one of the following is a characteristic NOT related with the suitability of the roots for absorbing water?
पर्याय
Tremendous surface area
Contain cell sap at higher concentration than the surrounding water
Root hairs have thin cell walls
Grow downward into the soil
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उत्तर
Grow downward into the soil
संबंधित प्रश्न
Name the following:
The process by which water enters root hairs.
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
Three plants (a), (b) and (c) were placed in beakers containing coloured water. The water in each beaker was covered with a layer of oil. The leaves were removed from plant (b), while plant (c) was exposed to strong light.
(i) In which plant, (a), (b) or (c) would the water move up the fastest?
(ii) In which plant (a), (b) or (c), would the water move up slowly?
(iii) Why was the water covered with a layer of oil?
(iv) What is being investigated by this experiment?
Choose the correct answer:
Wilting of plants occurs when ____________
Mention whether the following statement is true (T) or false (F) and give explanation in support of your answer.
Dry seeds when submerged in water swell up due to endosmosis.
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?
Root hair is ________ extension of epiblema cells.
Write a note on the morphological structure of the root.
Which part of the root helps in the maximum absorption of water and minerals?
Draw a neat and proportionate diagram of root hair and label mitochondria, nucleus and vacuole.
