Cell cycle and Cell divisions -2

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Cell cycle and Cell divisions -2

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NAME OF THE STUDENTS

27. How many times cell divides in meiosis?

(A) 1

(B) 2

(D) 4

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28. Meiosis division means....

(A) the cells must be half in numbers.

(B) the number of chromosomes in the new cells are half at time of cell division.

(D) All of these

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29. Mitosis means...

(A) the cells must be half in numbers.

(B) the number of chromosomes is maintained the same in new cells.

(D) the number of bipolar spindles is maintained the same in new cells.

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30. How many cells are produced at the end of meiosis ?

(A) 2

(B) 1

(D) 4

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31. How many stages are there in Meiosis - I ?

(A) 4

(B) 9

(D) 2

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32. Synapsis means...

(A) appearance of recombination nodules.

(B) chromatids clearly appears as tetrads.

( C) gene exchange occurs at the location of Chiasmata.

(D) chromosomes start pairing together along their length.

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33. At what phase the process progresses in a zipper fashion ?

(A) Pachytene

(B) Diplotene

(D) Dikinesis

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34. During pachytene stage...

(A) chromatids of chromosomes are twined around one another.

(B) appearance of Chiasmata.

(D) All of these

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35. The chronological sequence of stages in prophase-I of meiosis is...

(A) Leptotene ư Pachytene ư Zygotene ư Diplotene ư Dikinesis

(B) Leptotene ư Zygotene ư Pachytene ư Diplotene ư Dikinesis

(D) Leptotene ư Pachytene ư Zygotene ư Diplotene ư Dikinesis

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36. In which of the following stage chromosome appears filamentous ?

(A) Leptotene

(B) Dikinesis

(D) Pachytene

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37. Interkinesis means ...

(A)The period between two cell cycle.

(B)The stage between interphase and mitosis stage.

(C)The stage between two meiotic stage.

(D)The stage between mitosis and cell cycle.

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38. Intrameiotic interphase means...

(A)Synapsis

(B) Crossing over

(D) Syncytium

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39. During meiosis chiasmata are observed at ....

(A)Zygotene

(B) Pachytene

(D) Dikinesis

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40. The number of chiasmata depends upon....

(A) length of chromosome.

(B) numbers of chromosome.

(D) exchange of gene.

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41. Which is the specific place for gene exchange ?

(A) Zipper

(B) Chiasmata

(D) Equatorial plate

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42. Crossing over means...

(A) duplication of gene.

(B) distribution of gene.

(D) division of gene.

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43. During which phase condensation of chromosome is completed ?

(A) Metaphase - I

(B) Prophase - I

(D) Diplotene

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44. What happened at the end of dikinesis?

(A) Exchange of gene

(B) Complete condensation of chromosome

(D) Nucleolus disappears and nuclear membrane

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45. In which direction centromere of chromosome is located at equatorial plate?

(A) Poles of a cell

(B) North pole

(D) None of these

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46. At which stage the half the number of chromosomes than parent cell are collected?

(A) Metaphase-II

(B) Metaphase-I

(D) Anaphase-I

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47. Which of the following stage is not proper for prophase-I ?

(A) Leptotene

(B) Diplotene

(D) Interkinesis

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48. Which of the following statement is true for meiosis ?

(A)Formation of two new daughter cells at the end of the process.

(B)Prophase is short and easy.

(C)Once duplication of genetic material and twice cell division.

(D)Cells are made available for growth and development.

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49. Mitosis differs from meiosis in :

(A)based on number of chromosomes

(B) based on number of cells

(D) All of these

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50. Which type of gametes are produced by meiosis of diploid mother cell ?

(A)2n

(B) n

(D) 4n

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51 Find out, incorrect statement for meiosis.

(A)A meiotic mother cell is always haploid.

(B)The genotype of the daughter cells is identical to that of the mother cells.

(C)In a meiotic daughter cell, chromosome is always haploid.

(D)Each daughter cell has exactly same DNA strands.

52.Which is incorrect sentence for mitosis ?

(A)During prophase homologous chromosomes start pairing.

(B)A mother cell can either be haploid or diploid.

(C)At anaphase stage centromere of each chromosome divides.

(D)The genotype of the daughter cells is identical.

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53. For which of the following mitosis and meiosis are similar ?

(A)For number of chromosomes in daughter cell

(B)For the genotype of daughter cells

(C)For the amount of DNA which becomes double in synthesis phase

(D)For pairing of homologous chromosomes.

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