Answer the following:
Explain how periderm is formed.

Answer the following: Explain in short epidermis.

Answer the following Explain Sericulture.

Answer the following. : Explain how should is produced in Jal tarang.

Answer the following : Explain how stars are born .

Answer the following : Explain the need for thermometer .

Answer the following : Explain, how sound of different frequencies can be produced using flute.

Answer the following Explain the process of fermentation in detail.

Answer the following questions: Explain how the frequency of oscillation is related to the length of a pendulum and the amplitude of its oscillation.

Answer the following : Explain the process of evolution of stars .

Answer the following. : Explain the mechanism of production of sound in humans.