Biology - Comprehensive Mock Test 66

Question 651 Easy

In the somatic cell cycle?

A) In G1 phase DNA content is double the amount of DNA present in the original cell B) A short interphase is followed by a long mitotic phase C) DNA replication takes place in S-phase D) G2 phase follows mitotic phase

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Question 652 Easy

Cells in G0 phase of cell cycle ?

A) Exit cell cycle B) Enter cell cycle C) Suspend cell cycle D) Terminate cell cycle

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Question 653 Hard

If you are provided with root-tips of onion in your class and are asked to count the chromosomes which of the following stages can you most conveniently look into?

A) Prophase B) Anaphase C) Telophase D) Metaphase

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Question 654 Easy

Synapsis occurs between ?

A) mRNA and ribosomes B) A male and a female gamete C) Two homologous chromosomes D) Spindle fibres and centromere

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Question 655 Medium

The non-sister chromatids twist around and exchange segments with each other during ?

A) Leptotene B) Diakinesis C) Diplotene D) Pachytene

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Question 656 Medium

What type of plant is formed when colchicine is used in the process of development of Raphanobrassica?

A) Autotetraploid B) Haploid C) Triploid D) Allotetraploid

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Question 657 Medium

Cell division can not be stopped in which phase of the cell cycle?

A) G1-phase B) G2-phase C) S-phase D) Prophase

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Question 658 Easy

Meiosis occurs for the human female in ______?

A) Pancreas B) Liver C) Ovary D) Kidney

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Question 659 Easy

Meiosis is best seen in ?

A) Gamete B) Pollen grain C) Microsporangium D) Anther wall

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Question 660 Medium

In mitosis, nuclear envelope and nucleolus disappear during ?

A) Metaphase B) Interphase C) Prophase D) Telophase

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