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प्रश्न
Draw a labelled diagram of (i) a xylem vessel, and (ii) a sieve tube (or phloem).
उत्तर
Structure of a xylem vessel:
Structure of sieve tube (or phloem):
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संबंधित प्रश्न
Name the conducting tissue in plants which is made of living cells
What is xylem tissue? Name the two kinds of cells in xylem tissue. State whether these cells are living or dead.
What do you mean by 'translocation' with respect to transport in plants?
Which of the following carries substances upwards as well as downwards in a plant?
One of the following is not a constituent of blood. This one is:
Which one of the following has cytoplasm but no nucleus:
Which of the following is accomplished in a plant by utilizing the energy stored in ATP?
The transport system in plants consists of two kinds of tissues X and Y. The tissue X is made up of living cells and consists of two components A and B. The component A has tiny pores in its end walls and contains only cytoplasm but no nucleus. On the other hand, component B has cytoplasm as well as nucleus. The tissue Y is made up of dead cells and consists of two components C and D. The component C has open ends whereas component D does not have open ends. In flowering plants, either only C or both C and D transport water but D is the only water conducting tissue in non-flowering plants.
(a) What is (i) tissue X (ii) component A, and (iii) component B?
(b) What is (i) tissue Y (ii) component C, and (iii) component D?
The movement of food in phloem is called ____________.
Explain the mechanism of photosynthesis.
