Heat Transfer in Nature — Science STD 7 — Question

What is the role of stomata?

Define time period of a simple pendulum.

Name a muscular organ, which helps in speaking.

Name the tiny pores present in the leaves of the plants for exchange of gases.

In places of hot climate, it is advised that the outer walls of houses be painted white. Explain.

Name any two forest products.

Name the different types of teeth found in mouth.

Fill in the blanks:
Our body is a _____ of electricity.

Name the following: A parasitic plant with yellow, slender and branched stem.

Paheli thought that new plants always grow from seeds. But, she has never seen the seeds of sugarcane, potato and rose. She wants to know how these plants reproduce?