Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

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1.

Five Kingdom system of classification suggested by RH Whittaker is not based on

  • presence or absence of a well-defined nucleus

  • mode of reproduction

  • Mode of nutrition

  • Mode of nutrition


A.

presence or absence of a well-defined nucleus

RH Whittaker's classification is nor based on presence or absence of a well - defined nucleus. He gave five kingdom classification and used five criteria for delimiting kingdoms.

These are

both come under body organisation

(i) Complexity of cell structure

(ii) Complexity of body structure

(iii) Mode of nutrition

(iv) Ecological life cycle including mode of reproduction

(v)Phylogenetic relationship.

He divided organisms into five kingdoms as follows:

Kingdom  - Monera

Kingdom - Protista

Kingdom - Fungi

Kingdom - Plantae

Kingdom - Animalia

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2.

Archaebacteria differ from eubacteria in

  • cell membrane structure

  • mode of nutrition

  • cell shape

  • cell shape

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3.

Which of the following is responsible for peat formation?

  • Marchantia

  • Riccia

  • Funaria

  • Funaria

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4.

Tracheids differ from other treachery elements

  • having Casparian strips

  • being imperforate

  • lacking nucleus

  • lacking nucleus

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5.

Which structures perform the function of mitochondria in bacteria?

  • Nucleoid

  • Ribosomes

  • Cell wall

  • Cell wall

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6.

An example of edible underground stem is

  • carrot

  • groundnut

  • sweet potato

  • sweet potato

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7.

The solid linear cytoskeletal elements having a diameter of 6 nm and made up of a single type of monomer are known as

  • microtubules

  • microfilaments

  • intermediate filaments

  • intermediate filaments

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8.

During which phase (s0 of the cell cycle, the amount of DNA in a cell remains at the 4C level if the initial amount is denoted as 2C?

  • Go and G1

  • G1 and S

  • Only G2

  • Only G2

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9.

Match the following and select the correct answer.

Column I

Column  II

A.

Centriole

1.

Infolding in mitochondria

B.

Chlorophyll

2.

Thylakoids

C.

Cristae

3.

Nucleic acid

D.

Ribozymes

4.

Basal body cilia of flagella

  • A

    B

    C

    D

    4

    3

    1

    2

  • A

    B

    C

    D

    1

    2

    4

    3

  • A

    B

    C

    D

    1

    3

    2

    4

  • A

    B

    C

    D

    1

    3

    2

    4

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10.

Dr F went noted that if coleoptile tips were removed and placed on agar for one hour, the agar would produce a bending when placed on one side of freshly cut coleoptile stumps. Of what significance is this experiment?

  • It made possible the isolation and exact identification of auxin

  • It is the basis for quantitative determination of small amounts of growth - promoting substances

  • It supports the hypothesis that IAA is auxin

  • It supports the hypothesis that IAA is auxin

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