Question

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Answer 1

Answer:

3 ans-Phloem tissue consists of conducting cells, generally called sieve elements, parenchyma cells, including both specialized companion cells or albuminous cells and unspecialized cells and supportive cells, such as fibres and sclereids.

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Conducting cells (sieve elements)

Xylem.

Phloem.

Cambium.

Pith.

Companion cells.

4 ans- Cardiac muscle cells are found only in the heart, and are specialized to pump blood powerfully and efficiently throughout our entire lifetime. Four characteristics define cardiac muscle tissue cells: they are involuntary and intrinsically controlled, striated, branched, and single nucleated

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Answer 2

Answer:

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Explanation:

1. Cardiac muscles are involuntary muscles. They are involved in continuous rhythmic contraction and relaxation.

2. Cardiomyocytes or the cardiac cells are uninucleate, cylindrical, and elongated

3. Cardiac muscles display faint cross-striations which do not get fatigued under normal circumstances.