Nutrition in Plants — Science STD 7 — Question

Fill in the blank. Turmeric and litmus are _________ acid-base indicators.

What is ‘weathering’?

Name the device used to measure temperature.

State whether the following statements are true or false. In case a statement is false, write the corrected statement in your notebook. Condensation of steam is not a chemical change. (True/ False)

Explain how root system of plants help in the prevention of flood?

What are the end products of aerobic respiration.

Why walls of veins are thinner than the walls of arteries?

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. Breaking of complex food substances into simpler and soluble substances.

Predict the following change can be reversed or not be reversed. If you are not sure, you may write that down. Why are you not sure about these?
Dissolving sugar in water

Urinary bladder is the part of human excretory system. What is its role in excretion?