Our Environment

Which trophic level comprises of producers?

• First Trophic level

• Second Trophic level

• Third Trophic level

• Forth Trophic level

What the source of energy for all food chains?

• Earth's core

• Tides

• Sun

• Soil

Decomposers are important because (check all the correct answers)

• They break down organic matter into inorganic form and help recycle it

• They remove impurities from the soil

• They clean up the environment by decomposing dead organisms

• They make fossil fuels.

Q. 1 Read the statement and answer the questions that follow: A non biodegradable toxic chemical has entered into the food chain consisting of 4 trophic levels.

(a)Which trophic level of a food chain is likely to be more affected by this incident.?

• First Trophic level

• Second Trophic level

• Third Trophic level

• Fourth Trophic level

(b) What phenomenon is responsible for the accumulation of non biodegradable material in the food chain?

• Biomagnification

• Bio-significance

• Biotechnology

• Biochemistry

(c) Would this phenomenon have occurred if the chemical that had entered the food chain was biodegradable?

• Yes

• No

Pick the odd one out

• Pepsi Can

• Bisleri bottle

• Vegetable peels

• Thermacole plate

Zoo, aquarium, garden are all types of _________________ ecosystem

• Natural

• Manmade

How much energy is transferred from one trophic level to the next?

How much of the sun's energy can plants use of the total energy that falls on them?