Organisms and Populations MCQ Questions & Answers in Botany

31. Soil particles determine its

A texture

B field capacity

C water holding capacity

D soil flora

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32. Which one of the following statements is correct for secondary succession ?

A It begins on a bare rock

B It occurs on a deforested site

C It follows primary succession

D It is similar to primary succession except that it has a relatively fast pace

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33. Desert plants are generally

A viviparous

B succulent

C herbaceous

D heterophyllus

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34. In which one of the following is nitrogen not a constituent ?

A Pepsin

B Idioblast

C Bacteriochlorophyll

D Invertase

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

A mutualism

B commensalism

C cooperation

D co-evolution

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36. Carnivorous animals - lions and leopards, occupy the same niche but lions predate mostly larger animals and leopards take smaller ones. This mechanism of competition is referred to as-

A Competitive exclusion

B Character displacement

C Altruism

D Resource partitioning

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37. Two opposite forces operate in the growth and development of every population. One of them relates to the ability to reproduce at a given rate. The force opposing it is called

A environmental resistance

B morbidity

C fecundity

D biotic potential

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38. Which one is true?

A Commensalism when none of the interacting populations affect each other

B Symbiosis when the interaction is useful to both the populations

C Symbiosis when neither populations affects each other

D Commensalism when the interaction is useful to both the populations

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39. Which of the following communities is more vulnerable to invasion by outside animals and plants ?

A Tropical evergreen forests

B Oceanic island communities

C Mangroves

D Temperate forests

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40. Niche overlap indicates

A two different parasites on the same host

B sharing of one or more resources between the two species

C mutualism between two species

D active cooperation between two species

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31. Soil particles determine its

32. Which one of the following statements is correct for secondary succession ?

33. Desert plants are generally

34. In which one of the following is nitrogen not a constituent ?

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

36. Carnivorous animals - lions and leopards, occupy the same niche but lions predate mostly larger animals and leopards take smaller ones. This mechanism of competition is referred to as-

37. Two opposite forces operate in the growth and development of every population. One of them relates to the ability to reproduce at a given rate. The force opposing it is called

38. Which one is true?

39. Which of the following communities is more vulnerable to invasion by outside animals and plants ?

40. Niche overlap indicates

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