NCERT Science quiz : Class VII

Name the organism that produce their food with the help of naturally available materials

• Heterotrophs

• Autotrophs

• Saprophytes

• Parasites

Photosynthesis will not occur in the absence of.......

• Guard Cells

• Vacuole

• Chlorophyll

• Space between cells

Which of the following gas is essential for photosynthesis

• Hydrogen

• Nitrogen

• Carbon dioxide

• Oxygen

Which of the following part of the plant is not involved in the plant respiration

• Stomata

• Leaves

• Xylem

• Root hair

An approaching cyclone can be understood by .......

• High temperature and humidity

• Powerful waves in the ocean

• Cool breeze and rains

• Moderate temperature and moderate humidity

What is the reason behind the survival of polar bears in the extremely low temperature

• Well insulated fat skin

• White fur

• Wide paws

• None of these

Sullage water comes from.....

• Toilets

• Industries

• Commercial areas

• Kitchens

Cleaning of waste water means removing of its

• Nutrients

• Minerals

• vitamins

• Pollutants

The micro organisms which convert the dead plants and animals to humus are known as

• Composers

• Organisms

• Decomposers

• Non living entity

Light travels along in ........ line.

• Zigzag line

• Curved line

• Straight line

• Parallel line