Which of the following level of organization is represented by heart?
a) organ
b) organism
c) tissue
d) cell
Which of the following level of organization is represented by circulatory system of the human being?
a) organ system
b) tissue
c) organism
d) cell
Which of the following level of organization is represented by human being?
a) organ
b) organism
c) tissue
d) cell
Exercise:
Which of the following is absent in animal cell?
a) protein
b) water
c) salts
d) cellulose
What is the main difference between a plant and an animal cell?
a) plant cell has a nucleus, it is absent in the animal cell
b) plant cell has a cell wall which absent in the animal cell
c) animal cell is larger than the plant cell
d) plant cell has no chlorophyll
