Biology Questions with Answers from 81 to 85

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81. Which structure is involve in gaseous exchange of plants
(A) stomata
(B) lenticels
(C) cuticle
(D) all of these

82. Common feature of human and insect trachea is
(A) non-collapsiable wall
(B) supporting rings
(C) ectodermal origin
(D) endodermal origin

83. Vomiting occurs due to
(A) constipation
(B) diarrhoea
(C) antiperistalsis
(D) peristalsis

84. Photosynthetic prokaryotes lack
(A) ribosomes
(B) chloroplast
(C) cell-membrane
(D) vacuole

85. Which of the following organ is because of absence of teeth in birds
(A) crop
(B) syrinx
(C) stomach
(D) gizzard

ANSWERS: BIOLOGY QUESTIONS WITH ANSWERS
81. (D) all of these
82. (A) non-collapsiable wall
83. (C) antiperistalsis
84. (B) chloroplast
85. (D) gizzard