Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

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31.

Assertion: Mitochondria and chloroplasts have their own genome.

Reason: Endoplasmic reticulum and Golgi body are the cell organelles which have their own DNA.

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are true but reason is not the correct explanation of assertion

  • If assertion is true but reason is false.

  • If both assertion and reason are false.


C.

If assertion is true but reason is false.

Both mitochondria and chloroplast are semi-autonomous organelles as they possess their own DNA, RNA and 70S ribosomes to have sufficient functional independence from cellular machinery. Chloroplasts DNA is bigger than mitochondrial DNA. However, genetic information contained in these DNAs is limited. DNA is naked (without histone proteins) in both.


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32.

Assertion: Meiosis II is similar to mitosis.

Reason : Meiosis I cannot occur in haploid cells.

  • If both assertion and reason are true and reason is the correct explanation.

  • If both assertion and reason are true but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false

  • If both assertion and reason are false.


33.

Assertion : Corpus callosum connects the two cerebral hemispheres.

Reason : Association areas are responsible for complex functions like intersensory association of memory and communication.

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are hue but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false.

  • If both assertion and reason are false.


34.

Assertion : The efficiency of C4 plant is more than those of C3 plant.

Reason : C4 plants are more efficient in picking CO2.

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are hue but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false.

  • If both assertion and reason are false.


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35.

Assertion : Cattles feed on leaves of maize to get nutrition for growth and development.

Reason: A number of symbiotic bacteria are present in rumen of cattle.

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are hue but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false.

  • If both assertion and reason are false.


36.

Assertion : All proteinecous enzymes have a three-dimensional structure.

Reason : The secondary structure of protein is according to amino acid present inside the polypeptides.

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are hue but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false.

  • If both assertion and reason are false.


37.

Assertion : Glutamine contains amide group.

Reason : Isoelectric point of glutamine is 7.

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are hue but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false.

  • If both assertion and reason are false.


38.

Assertion : Duodenum is the main organ of small intestine.

Reason : In duodenum, digestion and absorption mainly occurs.

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are hue but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false.

  • If both assertion and reason are false.


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39.

Which of the following is a cloning vector?

  • DNA of Salmonella typhimurium

  • Ti plasmid

  • Amp' and Tet' loci

  • Ori minus pBR322


40.

Starting from the maximum, arrange the following male reproductive accessory organs in the correct order, based on the amount of secretion poured into urethra.
(i) Prostrate gland
(ii) Seminal vesicle
(iii) Bulbourethral gland

  • (i) > (ii) > (iii)

  • (iii) > (ii) > (i)

  • (ii) > (iii) > (i)

  • (ii) > (i) > (iii)


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