Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

31.

P-proteins belong to :

  • xylem parenchyma

  • trichomes

  • sieve tube elements

  • tracheids and vessels


32.

The wall of bacteria is consists of :

  • N-acetyl glucosamine

  • N-acetyl muramic acid

  • both (a) and (b)

  • cellulose


33.

Which enzyme is most specific ?

  • Trypsin

  • Pepsin

  • Sucrose

  • Nuclease


34.

The organelles, those take part in photorespiration are :

  • chloroplast and mitochondria

  • chloroplast, mitochondria and peroxisome

  • mitochondria and peroxisome

  • mitochondria only


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35.

Pneumatophores are meant for :

  • respiration

  • anchorage

  • protection

  • nutrition


36.

Mosses are attached to substratum by :

  • roots

  • capsule

  • rhizoids

  • cistron


37.

Mark the correct sequence of layers found in root anatomy:

  • Epiblema, cortex, endodermis, pericycle

  • Cortex, epiblema, pericycle, endodermis

  • Epiblema, cortex, pericycle, endodermis

  • Cortex, epiblema, endodermis, epidermis


38.

Organs which differ in origin but perform similar functions :

  • analogous

  • homologous

  • vestigial

  • any of the above


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39.

Sequence of DNA (Non- coding) is known as:

  • exon

  • intron

  • cistron

  • none


B.

intron

Intrans are DNA sequence lying within a coding sequence, i.e. Exons but not usually encoding cell product and resulting so called split genes cistron is a segment of linear DNA encoding a specific and functional product, usually protein.


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40.

How many sperms are formed by four primary spermatocyte :

  • 1

  • 4

  • 16

  • 32


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