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Biological Classification · Question 107

AIPMT 2002MCQEasy📈 Topic in 12% papers+4−1
1

In protozoa like Amoeba and Paramecium, the organ for osmoregulation is

  1. contractile vacuole
  2. mitochondria
  3. nucleus
  4. food vacuole.

Answer

(1) contractile vacuole

Solution

Freshwater protozoans live in a hypotonic medium, so water keeps entering the cell by osmosis.

⇒ The contractile vacuole collects the excess water and periodically expels it out of the cell.

∴ The contractile vacuole is the organ (organelle) of osmoregulation in Amoeba and Paramecium.

Answer: (1)

AIPMT 2002

Keep practising — Biological Classification

2

Organisms which obtain energy by the oxidation of reduced inorganic compounds are called

  1. photoautotrophs
  2. chemoautotrophs
  3. saprozoic
  4. coproheterotrophs
AIPMT 2002
3

Cauliflower mosaic virus contains

  1. ss RNA
  2. ds RNA
  3. ds DNA
  4. ss DNA
AIPMT 2001
4

What is true for cyanobacteria?

  1. Oxygenic with nitrogenase
  2. Oxygenic without nitrogenase
  3. Non-oxygenic with nitrogenase
  4. Non-oxygenic without nitrogenase
AIPMT 2001
5

What is true for archaebacteria?

  1. All halophiles
  2. All photosynthetics
  3. All fossils
  4. Oldest living beings
AIPMT 2001
6

Adhesive pad of fungi penetrates the host with the help of

  1. mechanical pressure and enzymes
  2. hooks and suckers
  3. softening by enzymes
  4. only by mechanical pressure
AIPMT 2001
7

What is true for photolithotrophs?

  1. Obtain energy from radiations and hydrogen from organic compounds
  2. Obtain energy from radiations and hydrogen from inorganic compounds
  3. Obtain energy from organic compounds
  4. Obtain energy from inorganic compounds
AIPMT 2001
8

Black rust of wheat is caused by

  1. Puccinia
  2. Ustilago
  3. Albugo
  4. Phytophthora.
AIPMT 2000
9

Enzymes are not found in

  1. fungi
  2. algae
  3. virus
  4. cyanobacteria.
AIPMT 2000
10

Which disease of man is similar to cattle's bovine spongiform encephalopathy?

  1. Spongiocitis of cerebrum
  2. Encephalitis
  3. Spondylitis
  4. Jakob–Creutzfeldt disease
AIPMT 2000

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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
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