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Biological Classification · Question 54

NEET 2013 (Karnataka)MCQMedium📈 Topic in 25% papers+4−1
1

Satellite RNA are present in some :

  1. Prions
  2. Bacteriophages
  3. Plant viruses
  4. Viroids

Answer

(3) Plant viruses

Solution

Satellite RNAs are small RNA molecules that cannot replicate on their own; they depend on a helper virus for replication and encapsidation.

⇒ Such satellite RNAs are found associated with some plant viruses (e.g. satellite RNA of tobacco ringspot virus and cucumber mosaic virus).

∵ Prions are proteinaceous particles without nucleic acid, and viroids are themselves free RNA molecules without a protein coat, they do not carry satellite RNA. Bacteriophages are not known to carry them.

∴ Satellite RNA is present in some plant viruses.

Answer: (3)

NEET 2013 (Karnataka)

Keep practising — Biological Classification

2

Specialized cells for fixing atmospheric nitrogen in Nostoc are

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

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

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

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)
5

Which one of the following sets of items in the option A – D are correctly categorized with one exception in it ?

  1. array|l|l|l| ITEMS & CATEGORY & EXCEPTION \ Kangaroo, Koala, Wombat & Australian marsupials & Wombat \ array
  2. array|l|l|l| ITEMS & CATEGORY & EXCEPTION \ Typhoid, Pneumonia, Diphtheria & Bacterial diseases & Diphtheria \ array
  3. array|l|l|l| ITEMS & CATEGORY & EXCEPTION \ UAA, UAG, UGA & Stop codons & UAG \ array
  4. array|l|l|l| ITEMS & CATEGORY & EXCEPTION \ Plasmodium, Cuscuta, Trypanosoma & Protozoan parasites & Cuscuta \ array
AIPMT 2012 (Mains)
6

Which statement is wrong for viruses?

  1. All are parasites.
  2. All of them have helical symmetry.
  3. They have ability to synthesize nucleic acids and proteins.
  4. Antibiotics have no effect on them.
AIPMT 2012 (Prelims)
7

Maximum nutritional diversity is found in the group

  1. fungi
  2. animalia
  3. monera
  4. plantae
AIPMT 2012 (Prelims)
8

Nuclear membrane is absent in

  1. Penicillium
  2. Agaricus
  3. Volvox
  4. Nostoc
AIPMT 2012 (Prelims)
9

The cyanobacteria are also referred to as

  1. protists
  2. golden algae
  3. slime moulds
  4. blue green algae
AIPMT 2012 (Prelims)
10

The most abundant prokaryotes helpful to humans in making curd from milk and in production of antibiotics are the ones categorised as

  1. cyanobacteria
  2. archaebacteria
  3. chemosynthetic autotrophs
  4. heterotrophic bacteria
AIPMT 2012 (Prelims)
11

Which one single organism or the pair of organisms is correctly assigned to its or their named taxonomic group?

  1. Paramecium and Plasmodium belong to the same kingdom as that of Penicillium.
  2. Lichen is a composite organism formed from the symbiotic association of an alga and a protozoan.
  3. Yeast used in making bread and beer is a fungus.
  4. Nostoc and Anabaena are examples of protista.
AIPMT 2012 (Prelims)

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All NEET Botany chapters
Class 11The Living WorldBiological ClassificationPlant KingdomMorphology of Flowering PlantsAnatomy of Flowering PlantsCell: The Unit of LifeCell Cycle and Cell DivisionTransport in PlantsMineral NutritionPhotosynthesis in Higher PlantsRespiration in PlantsPlant Growth and Development
Class 12Reproduction in OrganismsSexual Reproduction in Flowering PlantsPrinciples of Inheritance and VariationMolecular Basis of InheritanceStrategies for Enhancement in Food ProductionMicrobes in Human WelfareOrganisms and PopulationsEcosystemBiodiversity and ConservationEnvironmental Issues
Other chaptersBiomolecules (Biology)