Soil — Science STD 7 — Question

State the two types of reproduction in plants.

Would any of the bulbs glow when the switch is in the 'off' position in a circuit?

Name two plants where vegetative reproduction takes place by roots.

Windpipe runs adjacent to the foodpipe. What will happen if food particles enter the windpipe? Explain.

What are bases?

Fill in the blanks using the words listed below. water, front, intestinal, salts, pseudopodia, back, vacuole Large intestine absorbs ___________ and some __________ from the undigested food.

One day Sachin had gone to his uncle who lives in a village. He saw there a large number of people defecate in an open area because proper toilet facilities are not there. He wondered about the groundwater contamination, as he studied in his class that this act may cause water-borne diseases. He convinced village people to make toilets in order to avoid such an out break of water-borne diseases.
(i) Name two water-borne diseases.
(ii) What values are shown by Sachin?

Name two things that are formed from sludge and are extracted during the treatment of sewage.

State whether the following statement are true or false.
Anaerobic bacteria digest animal waste produce biogas.

Fill in the blanks in the following statements. Wool yielding animals bear ________ on their body.