How many types of cell divisions are there? Name them.
There are two types of cell division- Mitosis and Meiosis.
In the adjoining figure, ABCD is a quadrilateral. (i) How many pairs of adjacent sides are there? Name them. (ii) How many pairs of opposite sides are there? Name them. (iii) How many pairs of adjacent angles are there? Name them. (iv) How many pairs of opposite angles are there? Name them. (v) How many diagonals are there? Name them.
How many chromosomes do drones of honey bees possess? Name the type of cell division involved in the production of sperms by them.
How many types of plastic are there? Write about them.