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Nuclear envelope reappears at...

Nuclear envelope reappears at

A

Metaphase

B

Prophase

C

Anaphase

D

Telophase

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The correct Answer is:
D
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Nuclear envelope disappears.

[A] : The nuclear membrane forms envelope like structure called nuclear envelope around nuclear contents . [R] : The nuclear envelopes separate the nuceloplasm from protoplasm .

Assertion : Nucleus is the controlling centre of a cell. Reason : Pores in the nuclear envelope regulate the flow of materials in and out of the nucleus.

Identify the mitotic stage from the given features . (i) Nuclear envelope degenerates completely . (ii) Chromosomes are spread throughout the cytoplasm . (iii) Fully formed spindle apparatus consists of fine fibres .

The following process occurs in metaphase : (a) centrioles move to opposite poles (b) chromosomes line up along the equator of the dividing cell (c) chromosomes move to opposite poles (d) nuclear envelope disappears

The nuclear envelope reassembles during

Nuclear envelope is a derivative of

Nuclear envelope is a derivative of

Nuclear envelope assembles around the chromosome clusters during

A : The complete disintegration of the nuclear envelope marks the start of metaphase. R : Chromosomes are distinct with two chromatids at this stage.

ALLEN-CELL BIOLOGY (CELL STRUCTURE, FUNCTION & CELL DIVISION)-EXERCISE-I (Conceptual Questions)
  1. Which part of plant is suitable for the study of meiosis?

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  2. Chromosomal movement in Anaphase occurs with the help of :-

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  3. Nuclear envelope reappears at

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  4. Slipping of chiasmata towards the ends of bivalent is called :-

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  5. In meiosis, how many cycles of chromosome divison occurs?

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  6. Which does not occurs in prophase?

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  7. In which stage of cell division, number of chromosomes best counted:-

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  8. How many chromosome shall be present in a diploid cell at mitotic anap...

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  9. Chromosome exhibit high level of coiling at which phase of karyokinesi...

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  10. Bouquet stage shows convergence of chromosomal ends towards centriole ...

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  11. At anaphase -II of meiosis each chromosome contains:-

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  12. At which stage in meiosis the chromosomes split into chromatids and mo...

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  13. In Anaphase-I each chromosme composed of :-

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  14. Gap between division phase and start of DNA-replication is called :-

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  15. In meiosis, centromere divides during

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  16. In mitosis, nuclear envelope and nucleolus disappear during

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  17. In cell cycle, which stage is also called resting phase ??

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  18. Separation of homologous chromosomes during Anaphase -I is called:-

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  19. During cell division, spindle fibers attach to which part of chromosom...

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  20. Diakinesis represents :-

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