Class 9

Biology

Dated-24/08/20                                                         Due date-27/8/20                                      

Topic- Fundamental basic unit of life

 Q.1)  Write the difference between Plant cell and Animal cells.

 Q.2) Describe the microscopic structure of the cell.

 Q.3) What is a cell wall and how it is formed?

 Q.4) why were the scientist not be able to observe the cell organelles before 1940?

 Q.5)  There would be no plant life if chloroplast did not exist. Justify.

 Q.6)  Why are peroxisomes mostly found in liver and kidney cells?

 Q.7)  Write the difference between mitosis and meiosis.

 Q.8) Do you agree "A is a  building unit of an organism".If yes, explain why.

 Q.9)If you are provided with some vegetables to cook, you generally add salt into the vegetables. After adding salt vegetables releases the water. Why?

 Q.10) What is cell division? Gives the type of cell division.