Name a pantropical weed.

Give scientific name of a poisonous weed, commonly called Assam lata.

Explain the basis of biological control of weeds.

Troublesome American water weed found in India is

What is the best time for removal of weeds from the field ?

Salt is applied to tennis lawns to kill weeds. How does salting of tennis lawns help in killing of weeds of without affecting the grass?

Name the pairs of angles each the name in figure

Name the pairs of angles each the name in figure

Name the pairs of angles each the name in figure

Name the pairs of angles each the name in figure

Name the pairs of angles each the name in figure