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40. Which best describes parasitism?

    a. Barnacle sticking on the shell of an oyster        c. An orchid living on a buck of a mahogany tree

    b. Fern plant growing on a think of a tree        d. An insect larva staying on the leaves of a plant


41. In a given environment, which of the following refers to a population?

    a. Any organisms that live together and eat in one place.

    b. Several numbers of organisms living in the same place.

    c. Different organisms live together in the same place and in the same time.

    d. Group of organisms of the same kind living in the same place and at the same time.


42. Why are plants considered as producers?

    a. Plants produce fruits that can be eaten by animals

    b. Plants produce root crops that supply carbohydrates to animals

    c. Plants provide vegetable for animals and human consumption

    d. Plants convert energy from the Sun into chemical energy in the form of glucose (food)


43. All of the following are abiotic factors EXCEPT

    a. bacteria        b. rainfall        c. soil type            d. temperature


44 Which type of ecosystem has the most diverse species of plants and animals? 

    a. desert        b. grass land        c. tropical rain forest        d. tundra


45. Both the squid and shark cannot make their own food. They are called

    a. autotrophs        b. chemotroph        c. heterotrophs            d. detritivores


46. Which of the following organism. does NOT belong to the group? 

    a. herbivores        c. composers        c. carnivores            d. omnivores


47. What ecological relationship exists between an orchid and a tree? 

    a. commensalism    b. competition        c. mutualism            d. parasitism


48. In commensalism, organism that is neither benefited nor harmed is the 

    a. host            b. parasite        c. prey                d. commensal


49. A type of symbiotic relationship where both organisms benefit is called

    a. commensalism    b. competition        c. mutualism            d. parasitism


50. The sequence of eating relationship or energy transfer among organisms

    a. food chain        b. food web        c. ecosystem        d. trophic level


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Sagot :

Answer:

40. d

41. d

42. d

43. a

44. c

45. c

46. c

47. a

48. a

49. c

50. a

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