Class 7 Science Ch-14,17,18

Which of the following serve as Green Lungs?

• Green Pigment of the plants

• Forests

• Kitchen gardens

• Greenhouse gases

Which of the following products are obtained from the forests?

• Timber

• Firewood

• Lac

• All of these

Which of the following are producers?

• Humans

• Domestic animals

• Plants

• Both man and animals

Primary consumers are

• Carnivores

• Herbivores

• Omnivores

• Producers

A Food Chain includes

• producers

• consumers

• carnivores

• all of these

In which of the following,forests do not help?

• Rainfall

• Erosion

• Purification of water

• Both a and c

Which of the following statements are not correct?

• Soil helps forests to grow and regenerates

• Forests protect the soil from erosion

• Plants and animals are not dependent on one another

• Forest influence the climate and water cycle

Electric current is actually a flow of

• electrons

• protons

• neutrons

• both electrons and neutrons

Filament is made up of

• Tungsten

• aluminium

• copper

• tin

Fuse is made up of

• lead

• aluminium

• iron

• tin and lead alloy