Explain the different modes of transmission of heat.

What are the different transmission media for communication?

Explain the difference between surface tension and surface energy. What are their units?

Explain the difference in boiling points of all the isomers of the molecular formula C_4H_9Br .

Explain the difference between progressive and stationary waves.

What is permanent tissues? Explain briefly about different types of permanent tissues.

Define the term inflorescence. Explain the basis for the different types of inflorescence in flowering plants.