Biology (MCQS)8

Biology Multiple Choice Questions

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

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

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

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

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

The scientific name of jelly fish is
(A) Aurelia
(B) Madrepore
(C) Actinia
(D) Obelia

In which plants leaves are always in whorls
(A) lycopsids
(B) psilopsids
(C) sphenopsids
(D) pteropsids

 In bacterial and viral infection, their is increase in number of
(A) platelets
(B) RBC’s
(C) antibodies
(D) WBC’s

 In plants, which are involved in testa formation
(A) tracheids
(B) sclereids
(C) sclerenchyma
(D) none of these

The etiolated plants lack
(A) chlorophyll
(B) xanthophyll
(C) caroteins
(D) none of these