Biology mcqs p#3

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Biology mcqs for mcat preparation 2020

41. ‘Cassia fistula’ is the scientific name of
(A) amaltas
(B) rose
(C) onion
(D) tomato

42. Phage virus consists of head and
(A) thorax
(B) neck
(C) tail
(D) none of these

43. Bacteria without any flagella are called
(A) monotrichous
(B) atrichous
(C) peritrichous
(D) lophotrichous

44. Protists have been evolved from
(A) animals
(B) plants
(C) fungi
(D) prokaryotes

45. Algae are different from plants in which algae have sexual organs
(A) multicellular
(B) unicellular
(C) acellular
(D) none of these

46. Fungi can absorb food from the substrate because the have
(A) sporangium
(B) spores
(C) rhizoids
(D) stalk

47.The seed can be described as a fertilizer
(A) egg
(B) ovary
(C) ovule
(D) embryo

48. Platyhelminthes means

(A) round worms
(B) flat worms
(C) tape worms
(D) pin worms

49. The first land vertebrates were
(A) dipnoi
(B) amphibia
(C) reptilia
(D) aves

50. The planet is the life force on earth
(A) solar energy
(B) thermal energy
(C) tidal energy
(D) kinetic energy

51. Recombinant DNA is introduced in to host cell by means of
(A) phage
(B) vector
(C) bacteria
(D) enzyme

52. In cystic fibrosis, the patient lacks the gene that codes the transmembrane carrier.
(A) sodium ion
(B) carbon dioxide
(C) chloride ion
(D) potassium ion

53. Which gene is related to human in group number 11?
(A) sickle cell anemia
(B) leukemia
(C) albinism
(D) all of these

54. The sex of birds is determined by nature
(A) sperm
(B) autosomes
(C) egg
(D) none of these

55. In RNA nucleotides are attached by
(A) peptide bonds
(B) hydrogen bonds
(C) covalent bond
(D) phosphodiester bond

56. The chromosome is
(A) gene
(B) genes + protein
(C) DNA + genes
(D) gene + protein

57. The human body contains water
(A) 60-80%
(B) 70-90%
(C) 75-95%
(D) 80-90%

58. Environment is a source of
(A) food
(B) shelter
(C) clothing
(D) all of these

59. Fresh water ecosystem covers
(A) 2%
(B) 1%
(C) 3%
(D) 5%

60. Foul smell in lake is produced by
(A) algae
(B) bacteria
(C) fungi
(D) all of these

ANSWERS:

41. (A) amaltas
42. (C) tail
43. (B) atrichous
44. (D) prokaryotes
45. (B) unicellular
46. (C) rhizoids
47. (C) ovule
48. (B) flat worms
49. (B) amphibia
50. (A) solar energy
51. (B) vector
52. (C) chloride ion
53. (D) all of these
54. (C) egg
55. (D) phosphodiester bond
56. (B) genes + protein
57. (B) 70-90%
58. (D) all of these
59. (B) 1%
60. (D) all of these