The World of Metals and Non-metals — Science STD 7 — Question

Explain the role of mucus secreted by stomach.

Following statements describe the five steps in animal nutrition. Read each statement and give one word for each statement. Write the terms that describes each process. Taking food into the body.

Cows keep chewing the food even when they are not actively grazing or eating anything. Why?

The cellular respiration process takes place in which cell organelle?

Define heat.

Fill in the blanks: Amoeba digests its food in the ___________.

Paheli measured her body temperature. She got worried as it was not exactly 37°C, explain why?

Which Indian text predicted eclipses accurately in ancient times?

What is ‘weathering’?

Name the organ responsible for removal of undigested and unabsorbed residues from human body.