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Biological Classification · Question 38

AIPMT 2015MCQEasy📈 Topic in 12% papers+4−1
1

In which group of organisms the cell walls form two thin overlapping shells which fit together?

  1. Dinoflagellates
  2. Slime moulds
  3. Chrysophytes
  4. Euglenoids

Answer

(3) Chrysophytes

Solution

As per NCERT, in diatoms (Chrysophytes) the cell walls form two thin overlapping shells, which fit together as in a soap box. The walls are embedded with silica and thus are indestructible.

∵ Dinoflagellates have stiff cellulose plates, euglenoids have a protein-rich pellicle and slime moulds lack a cell wall in the vegetative stage, they are not the answer.

Answer: (3)

AIPMT 2015

Keep practising — Biological Classification

2

Pick up the wrong statement.

  1. Some fungi are edible.
  2. Nuclear membrane is present in Monera.
  3. Cell wall is absent in Animalia.
  4. Protists have photosynthetic and heterotrophic modes of nutrition.
AIPMT 2015
3

Choose the wrong statement.

  1. Morels and truffles are poisonous mushrooms.
  2. Yeast is unicellular and useful in fermentation.
  3. Penicillium is multicellular and produces antibiotics.
  4. Neurospora is used in the study of bio-chemical genetics.
AIPMT 2015
4

Cell wall is absent in

  1. Mycoplasma
  2. Nostoc
  3. Aspergillus
  4. Funaria.
AIPMT 2015
5

The imperfect fungi which are decomposers of litter and help in mineral cycling belong to

  1. Ascomycetes
  2. Phycomycetes
  3. Basidiomycetes
  4. Deuteromycetes
AIPMT 2015
6

True nucleus is absent in

  1. Vaucheria
  2. Volvox
  3. Anabaena
  4. Mucor.
AIPMT 2015 (Cancelled)
7

Which one of the following matches is correct?

  1. Mucor – Reproduction by conjugation – Ascomycetes
  2. Agaricus – Parasitic fungus – Basidiomycetes
  3. Phytophthora – Aseptate mycelium – Basidiomycetes
  4. Alternaria – Sexual reproduction absent – Deuteromycetes
AIPMT 2015 (Cancelled)
8

Five kingdom system of classification suggested by R.H. Whittaker is not based on

  1. presence or absence of a well defined nucleus
  2. mode of reproduction
  3. mode of nutrition
  4. complexity of body organisation.
AIPMT 2014
9

Which of the following shows coiled RNA strand and capsomeres?

  1. Polio virus
  2. Tobacco mosaic virus
  3. Measles virus
  4. Retrovirus
AIPMT 2014
10

Viruses have

  1. DNA enclosed in a protein coat
  2. prokaryotic nucleus
  3. single chromosome
  4. both DNA and RNA.
AIPMT 2014
11

Archaebacteria differ from eubacteria in

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

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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)