Problem

Solutions For Admission Assessment Exam Review Chapter E Problem 29BPT

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Solution 1

The cell cycle contains four different stages, which include G1 (gap phase1), G2 (gap phase 2), S (synthesis phase) and M (mitotic phase). The cell division takes place at M phase, which contains different phases like prophase, metaphase, anaphase, telophase and cytokinesis.

Here, the prophase is the beginning stage of cell cycle. In this phase chromosomes are condensed and well defined and distinguished. In this phase chromosomes are tried to move their opposite poles.

In animal cells, the cleavage furrow is formed. The formation of cleavage furrow takes place at cytokinesis phase. This results the separation of two daughter cells takes place. In plant cells, a cell plate is formed.

The alignment of chromosomes takes place at metaplate. The alignments of chromosomes take place during metaphase. Here, spindle fibres are attached to centromere of chromosomes and aligned at metaphase plate.

Thus, the options (a), (b) and (d) are incorrect.

In animal cells, the cleavage furrow is formed. The formation of cleavage furrow takes place at cytokinesis phase. This results the separation of two daughter cells takes place. In plant cells, a cell plate is formed.

Therefore, the correct option is – c. a cell plate begins to form at telophase, whereas in animals a cleavage furrow is initiated at that stage.

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