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…………………. type of cell division reduces c...

…………………. type of cell division reduces chromosome number to half in germ cells.

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Meiosis
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The specialised kind of cell division that reduces that chromosome number by half results in the production of haploid daughter cells. This kind of division is called .............. .

…………………. undergoes continuous cell division to produce multicellular embryo

In plant, mitotic cell division is seen in the -

A cell has 32 chromosomes. It undergoes mitotic division. What will be the chromosome number (n) during metaphase ? What would be the DNA content (c) during anaphase ?

While examining the mitotic stage in a tissue, one finds some cells with 16 chromosomes and some with 32 chromosomes. What possible reasons could you assign to this difference in chromosome number. Do you think cells with 16 chromosomes could have arisen from cells with 32 chromosomes or vice versa ?

Differentiate between microsporogenesis and megasporogenesis. Which type of cell division occurs during these events? Name the structure formed at the end of these two events

Identify the wrong statement about meiosis (A) Pairing of homologous chromosomes (B) Four haploid cells are formed (C) At the end of meiosis the number of chromosomes are reduced to half (D) Two cycle of DNA replication occurs

KUMAR PRAKASHAN-HOW DO ORGANISMS REPRODUCE?-OBJECTIVE QUESTIONS AND ANSWERS (Fill in the blanks : )
  1. …………………. undergoes continuous cell division to produce multicellular e...

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  2. …………………. is the causative agent responsible for sexual diseases like g...

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  3. …………………. type of cell division reduces chromosome number to half in ge...

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  4. In plasmodium, asexual reproduction occurs through ………………….

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  5. On the surface of potato tuber, there are many …………………. present for th...

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  6. A small cut part of organism's body can form complete new organism. Th...

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  7. In flowering plant, fertilisation of egg cell occur in ………………….

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  8. In sexual reproduction, creation of diversity in characters are fulfil...

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  9. In female, every …………………. days ovum is released from the ovary.

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  10. To prevent pregnancy, copper-T is placed in ………………….

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  11. The temperature of scrotum remains …………………. below the body temperature...

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  12. The genetic variation created during reproduction is the basis for ………...

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  13. In flowering plant, …………………. is most important part for continuity of...

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  14. The cells involved in sexual reproduction are known as ………………….

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  15. When sperms reach in urethra from testes, secretions from …………………. an...

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  16. If fertilisation of ovum does not occur in female, then …………………. happ...

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  17. The size of …………………. is determined by the rates of birth and death.

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  18. The uterus opens into the vagina through the ………………….

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  19. A …………………. is a future shoot and a …………………. is a future root in the ...

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  20. The DNA in the cell nucleus is the information source for making ……………...

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