Environmental Issues MCQ Questions & Answers in Botany

41. If a certain plant species in not found in its wild localities even after repeated search, then it would be listed in which category in the "Red Data Book"

A Extinct

B Endangered

C Vulnerable

D Rare

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42. Which of the following is not one of the prime health risks associated with greater UV radiation through the atmosphere due to depletion of stratospheric ozone?

A Reduced Immune System

B Damage to eyes

C Increased liver cancer

D Increased skin cancer

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43. Which one of the following is correct matching of plant, its habit and the forest type where it normally occurs

A Prosopis, tree, scrub

B Saccharum, grass, forest

C Shorea robusta, her, tropical rain forest

D Acacia catechu tree, coniferous forest

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44. Which of the following is the most productive ecosystem

A Estuary

B Open sea

C Desert

D Mountain

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45. If high altitude birds become rare or extinct, the plants which may disappear along with them are

A Pine

B Oak

C Orchid

D Rhododendrons

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46. A soil is said to be fertile when

A It is rich in organic matter

B It has capacity to hold water

C It has a capacity to hold nutrients

D It holds water & all essential nutrients in a definite proportion

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47. The two gases making highest relative contribution to the greenhouse gases are

A $$CO_2$$ and $$CH_4$$

B $$CH_4$$ and $$N_2O$$

C $$CFC_5$$ and $$N_2O$$

D $$CO_2$$ and $$N_2O$$

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48. The worst environmental hazards were created by accidents in nuclear power plant and MIC gas tragedy respectively in

A Russia in 1990 & Bhopal in 1986

B Ukraine in 1988 & USA in 1984

C Bhopal in 1984 & Russia in 1990

D Ukraine in 1986 and Bhopal in 1984

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49. Taj Mahal marble is affected by

A SO₂

B O₂

C O₃

D NO₂

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50. The correct path of energy flow in an eco system is

A Producers → Carnivores → Herbivores → Decomposers

B Producers → Herbivores → Arnivores → Decomposers

C Herbivores → Carnivores → Roducers → Decomposers

D Herbivores → Producers → Arnivores → Decomposers

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41. If a certain plant species in not found in its wild localities even after repeated search, then it would be listed in which category in the "Red Data Book"

42. Which of the following is not one of the prime health risks associated with greater UV radiation through the atmosphere due to depletion of stratospheric ozone?

43. Which one of the following is correct matching of plant, its habit and the forest type where it normally occurs

44. Which of the following is the most productive ecosystem

45. If high altitude birds become rare or extinct, the plants which may disappear along with them are

46. A soil is said to be fertile when

47. The two gases making highest relative contribution to the greenhouse gases are

48. The worst environmental hazards were created by accidents in nuclear power plant and MIC gas tragedy respectively in

49. Taj Mahal marble is affected by

50. The correct path of energy flow in an eco system is

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