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


B.

Radial with exarch xylem

When xylem and phloem groups are located on different radii, the bundles are said to be radial e.g. root. The protoxylem element lie at the periphery and metaxylem in the centre, this condition is called exarch e.g. root.


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46.

The modified stem of Opuntia is

  • phyllode

  • phylloclade

  • cladode

  • stamroinode


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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