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During which division nucleus becomes el...

During which division nucleus becomes elongated, constricts in the middle becomes dumbbell, shaped and divides to form two daughter nuclei.

A

amitosis

B

mitosis

C

meiosis

D

sporic meiosis

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In eukaryotes, the process of division of a somatic parent cell into two daughter cells is known as mitosis. During the M or mitosis phase of a cell cycle, the chromosomes present in the nucleus are separated into two identical sets, which eventually form two daughter nuclei. This is followed by cytokinesis. Onion root tips are most commonly used to observe the different stages of mitosis in the laboratory. Each onion cell contains a total of eight chromosomes. DNA specific stains are used to visualise these chromosomes in different phases of mitosis. Name the stain that can be used to observe the different phases of mitosis.

In which phase.the reconstruction of two daughter nuclei takes place

In which form are chromosomes visible during cell division?

Read the paragraph and answer the questions given below it. The cells of the nervous tissue become excited on receiving stimuli and conduct that excitation from one part of the body to another. The cell body containing the cytoplasm and nucleus is the main part of each nerve cell. Numerous, small, branched fibres called dendrites arise from the cell body of the nerve cell. One of the fibres is extremely long, it is called the axon. Numerous nerve cells are bound by connective tissue to form a nerve. Nervous tissue is present in the brain, spinal cord and the network of nerves spread all through the body. In most of the animals, response to stimuli occurs due to the integrated functioning of the nervous and muscular tissue. Functioning of which two tissues are involved in generating a response to stimuli?

Read the paragraph and answer the questions given below it. The cells of the nervous tissue become excited on receiving stimuli and conduct that excitation from one part of the body to another. The cell body containing the cytoplasm and nucleus is the main part of each nerve cell. Numerous, small, branched fibres called dendrites arise from the cell body of the nerve cell. One of the fibres is extremely long, it is called the axon. Numerous nerve cells are bound by connective tissue to form a nerve. Nervous tissue is present in the brain, spinal cord and the network of nerves spread all through the body. In most of the animals, response to stimuli occurs due to the integrated functioning of the nervous and muscular tissue. How are nerves cell bound together to form a tissue?

Read the paragraph and answer the questions given below it. The cells of the nervous tissue become excited on receiving stimuli and conduct that excitation from one part of the body to another. The cell body containing the cytoplasm and nucleus is the main part of each nerve cell. Numerous, small, branched fibres called dendrites arise from the cell body of the nerve cell. One of the fibres is extremely long, it is called the axon. Numerous nerve cells are bound by connective tissue to form a nerve. Nervous tissue is present in the brain, spinal cord and the network of nerves spread all through the body. In most of the animals, response to stimuli occurs duc to the integrated functioning of the nervous and muscular tissue. How can stimuli at one end of the body generate an impulse in the brain?

Read the paragraph and answer the questions given below it. The cells of the nervous tissue become excited on receiving stimuli and conduct that excitation from one part of the body to another. The cell body containing the cytoplasm and nucleus is the main part of each nerve cell. Numerous, small, branched fibres called dendrites arise from the cell body of the nerve cell. One of the fibres is extremely long, it is called the axon. Numerous nerve cells are bound by connective tissue to form a nerve. Nervous tissue is present in the brain, spinal cord and the network of nerves spread all through the body. In most of the animals, response to stimuli occurs due to the integrated functioning of the nervous and muscular tissue. What would happen if the nervous tissue is damaged?

Read the paragraph and answer the questions given below it. The cells of the nervous tissue become excited on receiving stimuli and conduct that excitation from one part of the body to another. The cell body containing the cytoplasm and nucleus is the main part of each nerve cell. Numerous, small, branched fibres called dendrites arise from the cell body of the nerve cell. One of the fibres is extremely long, it is called the axon. Numerous nerve cells are bound by connective tissue to form a nerve. Nervous tissue is present in the brain, spinal cord and the network of nerves spread all through the body. In most of the animals, response to stimuli occurs due to the integrated functioning of the nervous and muscular tissue. What is the cell body of a nerve cell composed of?

Questions based on paragraph A geneticist made a cross between two pea plants having axillary flowers (AA) and round shaped seeds (RR) with plants having terminal flowers (aa) and wrinkled seeds (rr). In F_1 generation, he obtained plants with axillary flowers and round shaped seeds. But in F_2 generation, he obtained new combinations along with parental combinations. Which new combinations would be formed in F_2 apart from the parental combination?

NIKITA PUBLICATION -CELL DIVISION-EXERCISE
  1. During which division nucleus becomes elongated, constricts in the mid...

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  2. In which division does not show equal distribution of chromatin materi...

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  3. In Ameoba multiple fission occurs by.. Paramecium division of meganucl...

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  4. The division of mitochondria and chloroplasts is

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  5. The series of sequential changes through which cell passes duringits g...

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  6. The average duration of cell cycle of a human & Yeast are

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  7. Cell cycle of human consist of

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  8. The so called resting phase is not really a resting phase. What is tha...

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  9. In .... Phase nucleus appears to be physically resting hence called as...

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  10. All the molecules needed by the cell for division are synthesized duri...

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  11. Interphase is divided into three sub phases except

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  12. G1 phase is also called as

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  13. In G1 phase synthesis of all takes place except

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  14. Time taken for completion of G1 phase is about....

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  15. The regulation of duration of cell cycle is arrested at middle of G1 p...

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  16. All of the following takes place in S phase except

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  17. At the end of S phase each chromosome has

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  18. The chromosome number in Gl,S and G2 phases are

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  19. Which of the following is called as second growth phase or gap phase o...

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  20. In which phase cell organelles and spindle proteins are synthesized

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