Biology
Assertion. Both centromere and centrosome are parts of chromosome.
Reason. The centromere is the region where spindle fibres attach, while the centrosome helps in the formation of spindle fibres.
- Both A and R are True.
- Both A and R are False.
- A is True and R is False.
- A is False and R is True.
Cell Division
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Answer
A is False and R is True.
Explanation
Centromere is the place where spindle fibres attach and centrosome is the organelle which helps in forming spindle fibres. Centromere and centrosome are not parts of chromosome.
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Related Questions
The female gamete/egg cell of a human cell will have:
- 44 + XX chromosomes
- 44 + XY chromosomes
- 22 + X chromosomes
- 22 + Y chromosomes
The figure given alongside was shown to students of class 10 in the laboratory under a compound microscope. They were told to observe the slide, identify the stage of mitotic cell division and mention the number of chromosomes which would be found in the daughter cells. Which of the following will be the correct response?
- Anaphase, 8 chromosomes
- Metaphase, 8 chromosomes
- Anaphase, 4 chromosomes
- Telophase, 4 chromosomes
Assertion. The basic structural unit of DNA is nucleotide.
Reason. DNA is composed of repeating nucleosome which are made up of three components - pentose sugar, phosphate group and nitrogenous bases.
- Both A and R are True
- Both A and R are False
- A is True and R is False.
- A is False and R is True.
Assertion. Centrosome is the point of attachment of two chromatids of a chromosome.
Reason. Centrosome initiates and regulates the process of cell division as it helps in the formation of spindle fibres.
- Both A and R are True
- Both A and R are False
- A is True and R is False.
- A is False and R is True.