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Organisms and Populations

AIPMT 2003MCQEasy📈 Topic in 100% papers+4−1
Ques. 1AIPMT 2003

Mycorrhiza is an example of :-

  1. Ectoparasitism
  2. Decomposers
  3. Endoparasitism
  4. Symbiotic relationship

Answer

(4) Symbiotic relationship

Solution

As per NCERT, mycorrhizae are associations between fungi and the roots of higher plants.

⇒ The fungi absorb essential nutrients (e.g. phosphorus) from the soil and pass them to the plant, while the plant provides the fungi with energy-yielding carbohydrates.

∵ Both partners benefit, it is a mutualistic (symbiotic) relationship.

Answer: (4)

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Ques. 2AIPMT 2002

The growth curve of bacterial population in lab is plotted against time. What will be the shape of graph?

  1. Sigmoid
  2. Hyperbolic
  3. Ascending straight line
  4. Descending straight line
Ques. 3AIPMT 2002

Choose the correct sequence of stages of growth curve for bacteria.

  1. Lag, log, stationary, decline phase
  2. Lag, log, decline, stationary phase
  3. Stationary, lag, log, decline phase
  4. Decline, lag, log phase, stationary
Ques. 4AIPMT 2002

In a population, unrestricted reproductive capacity is called as -

  1. Biotic potential
  2. Birth rate
  3. Carrying capacity
  4. Fertility
Ques. 5AIPMT 2002

Cause of mimicry is -

  1. offence
  2. concealment
  3. defence
  4. both (2) and (3)
Ques. 6AIPMT 2002

Which type of association is found in between entomophilous flower and pollinating agent ?

  1. Cooperation
  2. Co-evolution
  3. Mutualism
  4. Commensalism
Ques. 7AIPMT 2002

Two different species can not live for long duration in the same niche or habitat. This law is : -

  1. Dollo's rule
  2. Weismann's theory
  3. Allen's law
  4. Gause's hypothesis

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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
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