Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

41.

Auxin in plant means for

  • cell elongation

  • fruit ripening

  • cell division

  • inhibit the root growth


42.

The thylakoid in chloroplast are arranged as

  • interconnected disc

  • interconnected sacs

  • stacked discs

  • none of the above


43.

The given formula belong to

BrEpi3K(5)C5A()G(5)

  • Solanaceae

  • Malvaceae

  • Graminae

  • Compositae


44.

The non- photosynthetic, non- symbiotic N2 fixing bacteria are

  • Rhodobacter

  • Spirillum

  • Azotobacter

  • All of these


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45.

In monocot roots which types of vascular bundles are found?

  • Collateral, conjoint and closed

  • Radial with exarch xylem

  • Bicollateral, conjoint and closed

  • Radial with endarch xylem


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46.

The modified stem of Opuntia is

  • phyllode

  • phylloclade

  • cladode

  • stamroinode


B.

phylloclade

When the stem is flattened and function as leaf, it is called phylloclade or cladophyll.

Phyllode is a flattened petiole or leaf rachis that resembles and functions as a leaf and may or may not be combined with an actual lamina.

Cladode is a flattened origin arising from the stem of a plant. 

Staminode is a sterile or abortive stamen, frequently resembling a stamen without its anther.


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47.

Potometer is used to measure

  • ascent of sap

  • root pressure

  • transpiration

  • photosynthesis


48.

Which one is antioxidant vitamin?

  • Vitamin- D

  • Vitamin- E

  • Vitamin- B

  • Vitamin- K


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49.

The net gain ATP from complete oxidation of 1 molecule of glucose in eukaryote is

  • 2

  • 4

  • 24

  • 36


50.

In bacteria respiration occurs in

  • cytoplasmic membrane

  • mitochondria

  • nuclear membrane

  • endoplasmic reticulum


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