Question

Each of the following questions/statements has four suggested answers. Rewrite the correct answer in each case.

(i) Typhoid is classified as a : 

(A) Viral disease 

(B) Genetic disorder 

(C) Bacterial disease 

(D) Protozoan disease

(ii) Bt cotton is resistant to : 

(A) Insects 

(B) Herbicides 

(C) Salt 

(D) Drought

(iii) Roots and shoots lengthen through the activity of: 

(A) Apical meristem 

(B) Vascular cambium 

(C) Lateral meristem 

(D) Cork cambium

(iv) An antiviral protein released from infected and dying cells is : 

(A) Antigen 

(B) Antibody 

(C) Antiserum 

(D) Interferon

(v) Opening and closing of stomata is due to 

(A) Ca²⁺ 

(B) Na⁺ 

(C) K⁺ 

(D) CL

Answer 1

(i) Bacterial disease. 

(ii) Insects. 

(iii) Apical meristems. 

(v) K⁺ (iv) Interferon.