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Organisms and Populations · Question 26

NEET (UG) 2021MCQEasy📈 Topic in 100% papers+4−1
1

In spite of interspecific competition in nature, which mechanism the competing species might have evolved for their survival?

  1. Predation
  2. Resource partitioning
  3. Competitive release
  4. Mutualism

Answer

(2) Resource partitioning

Solution

As per NCERT, if two species compete for the same resource, they could avoid competition by choosing, for instance, different times for feeding or different foraging patterns.

This mechanism is called resource partitioning. MacArthur showed that five closely related species of warblers living on the same tree were able to avoid competition and co-exist due to behavioural differences in their foraging activities.

Answer: (2)

NEET (UG) 2021

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2

Amensalism can be represented as :

  1. Species A (+); Species B (0)
  2. Species A (-); Species B (0)
  3. Species A (+); Species B (+)
  4. Species A (-); Species B (-)
NEET (UG) 2021
3

In the exponential growth equation Nt = N0ert, e represents

  1. The base of geometric logarithms
  2. The base of number logarithms
  3. The base of exponential logarithms
  4. The base of natural logarithms
NEET (UG) 2021
4

Match List-I with List-II Choose the correct answer from the options given below.

  1. (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
  2. (a)-(iv), (b)-(ii), (c)-(iii), (d)-(i)
  3. (a)-(iv), (b)-(i), (c)-(iii), (d)-(ii)
  4. (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
NEET (UG) 2021
5

In the light of the above statements, choose the correct answer from the options given below

  1. (A) is false but (R) is true
  2. Both (A) and (R) are true and (R) is the correct explanation of (A)
  3. Both (A) and (R) are true but (R) is not the correct explanation of (A)
  4. (A) is true but (R) is false
NEET (UG) 2021
6

Secondary metabolites such as nicotine, strychnine and caffeine are produced by plants for their

  1. Nutritive value
  2. Growth response
  3. Effect on reproduction
  4. Defence action
NEET (UG) 2020
7

Which of the following is not an attribute of a population?

  1. Natality
  2. Sex ratio
  3. Mortality
  4. Species interaction
NEET (UG) 2020
8

Niche is

  1. all the biological factors in the organism’s environment
  2. the physical space where an organism lives
  3. the range of temperature that the organism needs to live
  4. the functional role played by the organism where it lives
NEET 2018
9

Which one of the following population interactions is widely used in medical science for the production of antibiotics?

  1. Commensalism
  2. Mutualism
  3. Parasitism
  4. Amensalism
NEET 2018
10

Natality refers to

  1. death rate
  2. birth rate
  3. number of individuals leaving the habitat
  4. number of individuals entering a habitat
NEET 2018
11

In a growing population of a country,

  1. pre-reproductive individuals are more than the reproductive individuals
  2. reproductive individuals are less than the post-reproductive individuals
  3. reproductive and pre-reproductive individuals are equal in number
  4. pre-reproductive individuals are less than the reproductive individuals.
NEET 2018

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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)