Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

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31.

The technique called gamete intra-fallopian transfer (GIFT) is recommended for those females

  • who cannot produce an ovum

  • who cannot retain  the foetus inside uterus

  • who cervical canal is too narrow to allow passage for the sperms

  • who cervical canal is too narrow to allow passage for the sperms


A.

who cannot produce an ovum

The technique called gamete intra-fallopian transfer (GIFT) is a transfer of an ovum collected from a donor into the fallopian tube of another female. This technique is recommended for those females who can not produce an ovum but can provide a suitable environment for fertilisation and further development.

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32.

Bacillus thuringiensis forms protein crystals, which contain insecticidal protein

  • binds with epithelial cells of midgut of the insect pest ultimately killing it

  • is coded by several genes including the gene cry

  • is acitvated by acid of pH of the foregut is the insect pest

  • is acitvated by acid of pH of the foregut is the insect pest

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33.

Which one of the following pairs is wrongly matched while the remaining three are correct?

  • Penicillium - Conidia

  • Water hyacinth - Runner

  • Bryophyllum - Leat buds

  • Bryophyllum - Leat buds

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34.

Which one of the following animals may occupy more than one trophic levels in the same ecosystem at the same time?

  • Sparrow

  • Lion

  • Goat

  • Goat

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35.

Both, hydrarch and xerarch successions lead to

  • medium water conditions

  • xeric conditions

  • highly dry conditions

  • highly dry conditions

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36.

What happens during fertilisation in humans after many sperms reach close to the ovum?

  • Secretions of acrosome helps one sperm enter cytoplasm of ovum through zona pellucida

  • All sperms excepts the one nearest to the ovum lose their tails

  • Cells of corona radiata trap all the sperms excepts one 

  • Cells of corona radiata trap all the sperms excepts one 

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37.

About which day in a normal human menstrual cycle does rapid secretion of LH (popularly called LH surge) normally occurs?

  • 14th day

  • 20th day

  • 5th day

  • 5th day

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38.

Read the following statement having two blanks (1 and 2). 

A drug used for ..... (1) ...... patients is obtained from a species of the organism ....... (2).....The one correct option for the two blanks is.

  • Blank – 1
    Blank – 2
    Heart
    Penicillium
  • Blank – 1

    Blank – 2

    Organ - transplant

    Trichoderma
  • Blank – 1

    Blank – 2

    Swine flu

    Monascus
  • Blank – 1

    Blank – 2

    Swine flu

    Monascus
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39.

Silencing of mRNA has been used in producing transgenic plants resistant to

  • bollworms

  • nematodes

  • White rusts

  • White rusts

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40.

Consider the following statements ( I - IV) about organic farming.

I. Utilises genetically modified crops like Bt cotton
II. Uses only naturally produced inputs like compost.
III. Does not use pesticides and urea
IV. Produces vegetables rich in vitamins and minerals.

  • (II), (III) and (IV)

  • (III) and (IV) only

  • (II) and (III) only

  • (II) and (III) only

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