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Standard XII
Biology
Centrosome/ Centrioles
Question

Two centrioles along with centrosphere from the centrosome of an animals cell is given. The cross section of a centriole reveal '9+0' arrangement. Match the correct labelling.

A. Centrosphere (pericentriolar material, PCM)
B. Centrosome
C. Centrioles (horizontal)
D. Centrioles (vertical)

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Solution
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A is microtubule of the centriole. B is the space of the centrosome. C are the sub distal appendages. D is a vertical centriole
So, the correct answers are 'B and D'

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Similar Questions
Q1
Two centrioles along with centrosphere from the centrosome of an animals cell is given. The cross section of a centriole reveal '9+0' arrangement. Match the correct labelling.

A. Centrosphere (pericentriolar material, PCM)
B. Centrosome
C. Centrioles (horizontal)
D. Centrioles (vertical)

152485.png
View Solution
Q2
Choose the correct options from the following:
A. Centrioles are made up of nine evenly spaced peripheral fibrils of tubulin.
B. The centrioles in a centrosome lie parallel to each other.
C. The central part of the centriole is also proteinaceous and called the hub.
D. Centrioles form the spindle fibres that give rise to spindle apparatus during cell division.
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Q3
Centrioles and centrosomes occur in the cells of
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Q4
Centrioles and centrosomes are present in cells of
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Q5

Each centrosome contains 2 centrioles. During late prophase, is it that one of the two centrioles reaches either pole and grows microfilaments, or is it that the centrosome duplicates and either one reaches the pole?

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