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प्रश्न
Choose the correct answer:
Wilting of plants occurs when ____________
विकल्प
phloem is blocked.
xylem is blocked.
a few old roots are removed.
both xylem and phloem are blocked.
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उत्तर
Wilting of plants occurs when xylem is blocked
APPEARS IN
संबंधित प्रश्न
The process by which root hairs absorb water from the soil.
State whether the following statement is true or false. Rewrite the false statement correctly.
Water absorption mainly occurs through the root-hair.
Mention whether the following statement is true or false. Correct the false statement by altering the last word only.
The cell wall of the root cell is a differentially permeable membrane.
What would happen to the root hair of a potted plant if the soil was watered with an extremely concentrated solution of sodium chloride?
Mention whether the following statement is true (T) or false (F) and give an explanation in support of your answer.
Guttation in plants occurs maximum at midday.
Study the experimental setup in the figure and then answer the question that follow.
What will you observe in the setup after about half an hour? Give reasons for your answer.
Differentiate between the following
Permeable and Semi-permeable membrane.
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.
Multiple Choice Question:
The most widely accepted theory for ascent of sap is ______.
Plasma Membrane is ______.
