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प्रश्न
The dead element present in the phloem is
पर्याय
companion cells
phloem fibres
phloem parenchyma
sieve tubes
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उत्तर
phloem fibres
Phloem is a complex permanent tissue of vascular plants which conducts organic food material from leaves to different plant parts. Phloem consists of four types of component viz. sieve tubes, companion cells, phloem parenchyma and phloem fibres. Out of all these components only the phloem fibres are dead and the remaining ones are living.
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संबंधित प्रश्न
Answer the following question.
Describe different types of cell junctions.
The ______ epithelium is also known as the pavement membrane.
Glandular epithelium gives a stratified appearance.
Sieve cells have no companion cells.
Write one point of difference between
Simple and compound epithelial tissue.
Identify the following relationship
Cuboidal: Epithelial
Cardiac: ______
Granulocytes: ______
Osteocytes: ______
Epithelium founds in the lining of stomach and intestine is
The body of sponges does not possess tissue level of organisation though it is made of thousands of cells. Comment.
How does a gap junction facilitate intercellular communication?
Write the appropriate type of tissues in column B according to the functions mentioned in column A.
| Column A | Column B |
| a. Secretion and absorption | i. ______ |
| b. Protective covering | ii. ______ |
| c. Linking and supporting framework | iii. ______ |
