Exercise 2

Question 36 :

Pollen grains in plants are produced in


A). roots
B). leaves
C). flower
D). stem
Answer : Option C

Question 37 :

Nitrogen is fixed in ecosystems in ways stated below. Which one of the statements below is false?


A). By cyanobacteria
B). By electrical discharges in the atmosphere
C). By industrially synthesised fertilizer
D). By denitrification
Answer : Option D

Question 38 :

Ptyalin is an enzyme produced in the


A). salivary glands
B). pituitary glands
C). thyroid glands
D). pancreas
Answer : Option A

Question 39 :

Mycobacterium leprae causes leprosy, Corynebacterium diphtheria causes diphtheria and Vibrio comma causes


A). tetanus
B). influenza
C). cholera
D). typhoid
Answer : Option C

Explanation :

Vibrio cholerae (also Kommabacillus) is a gram negative comma-shaped bacterium with a polar flagellum that causes cholera in humans