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


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38.

Organs which differ in origin but perform similar functions :

  • analogous

  • homologous

  • vestigial

  • any of the above


A.

analogous

The organs which have similar function but are different in their structure and origin are called Analogous organs.

The organs which have same fundamental structure and origin but function may be similar or different are called Homologous organs.

The organs which are present in reduced form and do not perform any function in the body but correspond to the fully developed functional organs of related animals are called vestigial organs.


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39.

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

  • exon

  • intron

  • cistron

  • none


40.

How many sperms are formed by four primary spermatocyte :

  • 1

  • 4

  • 16

  • 32


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