Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.
Advertisement

 Multiple Choice QuestionsMultiple Choice Questions

41.

Mitotic spindle have main protein

  • tubulin

  • myosin

  • tropomyosin

  • dynein


42.

Crossing over occurs in

  • zygotene

  • leptotene

  • pachytene

  • diplotene


43.

Number of chromosomes in an angiospermic plant is 14, then the number of chromosomes in synergid cells will be

  • 14

  • 7

  • 28

  • 21


44.

At what stage of the cell cycle are histone proteins synthesized in a eukaryotic cell?

  • During entire prophase

  • During telophase

  • During S-phase

  • During G2 stage of prophase


Advertisement
45.

In meiosis division is

  • Ist reductional and IInd equational

  • Ist equational and IInd reductional

  • both reductional

  • both equational


Advertisement

46.

Colchicine prevents the mitosis of the cells at which of the following stage?

  • Anaphase

  • Metaphase

  • Prophase

  • Interphase


B.

Metaphase

Colchicine, an alkaloid obtained from Colchincum autumnale (Liliaceae), prevents mitosis by inhibiting spindle formation through disruption of microtubules. It is a mitotic poison.


Advertisement
47.

Which typical stage is known for DNA replication?

  • Metaphase

  • G1- phase

  • S- phase

  • G2- phase


48.

The term 'Meiosis' was given by

  • Johansen

  • Knoll and Ruska

  • A. Flemming

  • Farmer and Moore


Advertisement
49.

Lampbrush chromosomes are seen in which typical stage

  • mitotic anaphase

  • mitotic prophase

  • mitotic metaphase

  • meiotic prophase


50.

The checkpoint in cell cycle plays important role in

  • repairing DNA damage

  • apoptosis initiation

  • assessing DNA damage

  • none of these


Advertisement