Reproduction in Plants — Science STD 7 — Question

Would we see similar kind of trees in every forest? Asked Boojho'.

Write word equations for two chemical reactions with the help of materials given in the box.

Air, copper sulphate, iron, vinegar, iron oxide, carbon, dioxide, iron sulphate, copper, lime water, water.

Briefly explain the maximum and minimum thermometers.

Discuss the position and number of molars in buccal cavity.

State any two observations from everyday life which show that light travels in straight lines.

Why is it important to destarch a plant before an experiment?

Classify the given motion:

Motion of a child in a merry-go-round.

• straight line motion

• circular motion

• oscillatory motion

Explain the term "mechanical digestion" with an example.

Use a torch and a ball in a dark room to show how only half of the Earth receives sunlight. Describe your observation and also draw the diagram.

How do plants obtain carbon dioxide?