Biology Practice MCQ Page 28
Multiple Choice questions for Biology in the sets of 10 each on one page with questions and answers. All sets are useful in the preparation of subject tests for employment or admission.
Question: 2388 The homologous chromosomes exchange their segments during pachytene by the formation of
- Chiasmata
- Synapsis
- Centromeres
- Crossing over.
Question: 2392 The exchange of chromosal segments i.e.crossing over occurs during
- First Meiotic Division
- Second Meiotic Division
- Third Meiotic Division
- None of the above
Question: 2395 Which sub-phase of Prophase I can last for months or years?
- Diplotene
- Leptotene
- Zygotene
- Diakinesis
Question: 2396 Which cell division produces gametes with varied combination of genes?
- Mitosis
- Zygotene
- Meiosis
- Diakinesis
Question: 2397 Virus range in size from
- 2 nm to 70 nm
- 2 nm to 100 nm
- 2 nm to 200 nm
- 2 nm to 300 nm
Question: 2400 The genetic material of phase virus mostly is
- DNA
- RNA
- Both DNA and RNA
- either DNA or RNA
Question: 2402 Virus was discovered by
- V.M.Stanely
- Stanely Miller
- D.Lwanowski
- Karpenchenko
Question: 2403 Virus was discovered by
- V.M.Stanely
- Stanely Miller
- D.Lwanowski
- Karpenchenko
Question: 2406 In 1935, who isolated tobacco mosaic virus from the host cell?
- W,M.Stanely
- W.S.Sutton
- T.H.Morgan
- Iwanowsky
Question: 2420 Bacteriophase virus are
- rod shaped
- tab-poles like viruses
- round viruses
- are oval shaped viruses
Question: 2421 Polio viruses are
- rod shaped
- tadpole like viruses
- golf ball like viruses
- star shaped viruses
Question: 2422 In human beings influenza is caused by
- Bacteria
- Viruses
- Fungi
- Algae
Answers to the questions of Biology on this page
Following list gives the correct choice for the answer of the Biology mcqs.
2388 . A
2392 . A
2395 . A
2396 . C
2397 . D
2400 . A
2402 . C
2403 . C
2406 . A
2420 . B
2421 . C
2422 . B
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MCQ for Practicing Subject Tests