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प्रश्न
What is phloem tissue? Phloem contains two types of cells joined side by side. Name these two types of cells. State whether these cells are living or dead.
उत्तर
Phloem is a conducting tissue in plants. It transports the food made in the leaves to all the parts of the plant like branches, roots, and stems.
Phloem contains two types of cells, i.e. sieve tubes and companion cells. Both of these cells are living cells.
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संबंधित प्रश्न
Name the conducting tissue in plants which is made of living cells
State the term used for the transport of food from leaves to other parts of plant.
Which process in a plant is accomplished by utilising energy from ATP : transport of water and minerals or transport of food?
Which plant tissue is involved in translocation : xylem or phloem?
One of the following is not a constituent of blood. This one is:
Which one of the following has cytoplasm but no nucleus:
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?
Water and dissolved minerals get into the root hair of a plant by a process called A and enter the conducting tissue B. The process C helps the water and dissolved minerals to move up through tissue B in roots and stem, and reach the leaves of a plant. In the leaves, food is made by a process D. This food is then transported to all the parts of a plant through tissue E. The process of distributing food made in the leaves to all the parts of the plants is called F.
(a) What are (i) A (ii) B (iii) C (iv) D (v) E, and (vi) F?
(b) Which tissue is made up of living cells: B or E?
(c) Which tissue, B or E, contains sieve tubes?
(d) Which tissue, B or E, contains tracheids?
The form of sugar transported through the phloem is glucose.
In the given transverse section of the leaf identify the layer of cells where maximum photosynthesis occurs.
