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Biological Classification · Question 47

AIPMT 2014MCQEasy📈 Topic in 25% papers+4−1
1

Viruses have

  1. DNA enclosed in a protein coat
  2. prokaryotic nucleus
  3. single chromosome
  4. both DNA and RNA.

Answer

(1) DNA enclosed in a protein coat

Solution

As per NCERT, viruses are nucleoproteins: they contain genetic material (either RNA or DNA, never both) enclosed in a protein coat called capsid.

∵ Viruses are not cellular, they have no nucleus or chromosome.

∴ Viruses have DNA (or RNA) enclosed in a protein coat.

Answer: (1)

AIPMT 2014

Keep practising — Biological Classification

2

Archaebacteria differ from eubacteria in

  1. cell membrane structure
  2. mode of nutrition
  3. cell shape
  4. mode of reproduction.
AIPMT 2014
3

Anoxygenic photosynthesis is characteristic of

  1. Rhodospirillum
  2. Spirogyra
  3. Chlamydomonas
  4. Ulva.
AIPMT 2014
4

Which one of the following fungi contains hallucinogens?

  1. Morchella esculenta
  2. Neurospora sp.
  3. Amanita muscaria
  4. Ustilago sp.
AIPMT 2014
5

A location with luxuriant growth of lichens on the trees indicates that the :

  1. trees are very healthy
  2. trees are heavily infested
  3. location is highly polluted
  4. location is not polluted
Out of syllabusAIPMT 2014
6

Which of the following are likely to be present in deep sea water?

  1. Blue-green algae
  2. Saprophytic fungi
  3. Archaebacteria
  4. Eubacteria
NEET 2013
7

Which one of the following is true for fungi?

  1. They lack a rigid cell wall.
  2. They are heterotrophs.
  3. They lack nuclear membrane.
  4. They are phagotrophs.
NEET 2013 (Karnataka)
8

Satellite RNA are present in some :

  1. Prions
  2. Bacteriophages
  3. Plant viruses
  4. Viroids
NEET 2013 (Karnataka)
9

Specialized cells for fixing atmospheric nitrogen in Nostoc are

  1. heterocysts
  2. hormogonia
  3. nodules
  4. akinetes
Out of syllabusNEET 2013 (Karnataka)
10

In the five kingdom classification, Chlamydomonas and Chlorella have been included in

  1. protista
  2. algae
  3. plantae
  4. monera.
AIPMT 2012 (Mains)
11

How many organisms in the list given below are autotrophs? Lactobacillus, Nostoc, Chara, Nitrosomonas, Nitrobacter, Streptomyces, Saccharomyces, Trypanosoma, Porphyra, Wolffia

  1. Four
  2. Five
  3. Six
  4. Three
AIPMT 2012 (Mains)

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