Exercise 1

Question 16 :

Most highly intelligent mammals are

A). whales
B). dolphins
C). elephants
D). kangaroos
Answer : Option B

Question 17 :

Plant development is influenced by

A). quality of light only
B). quality and quantity of light
C). quality and duration of light
D). quality, quantity and duration of light
Answer : Option D

Question 18 :

Prokaryotic cells lack

A). nucleolus
B). nuclear membrane
C). membrane bound by organelles
D). All of these
Answer : Option D

Question 19 :

Photosynthesis takes place faster in

A). yellow light
B). white light
C). red light
D). darkness
Answer : Option B

Question 20 :

Nucleus, the genetic material containing rounded body in each cell, was first discovered in 1831 by

A). Robert Hooke
B). Robert Brown
C). Rudolf Virchow
D). Theodore Schwann
Answer : Option B