Archaebacteria differ from eubacteria in from Biology NEET Year

Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

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

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2.

Archaebacteria differ from eubacteria in

  • cell membrane structure

  • mode of nutrition

  • cell shape

  • cell shape


A.

cell membrane structure

Archeabacteria different from eubacteria in that eubacteria has two cell membrane composed mainly of glycerol - ester lipids, while archaebacteria have a membrane made up of glycerol - ether lipid. Ether lipids are chemically more resistant then ester lipids. This stability help archaebacteria survive at high temperature and in very acidic or alkaline environment. 

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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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