More Classes

5th Class
6th Class
7th Class
8th Class
9th Class
10th Class
11th Class
12th Class
NAT I
NAT II
CSS
IQ
General Knowledge
MDCAT
ECAT
GAT General
GAT Subject

General Science 8th Class English Medium Chapter 1 Online Test MCQs With Answers

Question # 1

The feeding level of an organism in an ecosystem is called.

Choose an answer

Food Web

Food chain

Trophical level

Secession level

Skip

Question # 2

Energy of ............ is trapped as chemicla energy by producers.

Choose an answer

Moon

Atom

Sun

Earth

Skip

Question # 3

During respiration by the animals, whihc gas is released into the atmosphere.

Choose an answer

Nitrogen

Oxygen

Carbon Di oxide

Hydrogen

Skip

Question # 4

Organism in ecologicla communits interact with one anothe rin....... major ways.

Choose an answer

Two

three

Four

Five

Skip

Question # 5

Half of the increase in atmospheric carbon dioxide concentrations in the last.............. years has occured since 1980

Choose an answer

100

200

300

400

Skip

Question # 6

The energy of the Sun in traped as chemical energy by.

Choose an answer

Tertiary consumers

Primary consumers

Producers

Secondary consumers

Skip

Question # 7

All the food chains are joined together to form .....

Choose an answer

Food web

Ecologicla pyramid

Tropicla level

None of these

Skip

Question # 8

A relationship where two species live togetehr closely is called.

Choose an answer

Mutualism

Commensalism

Symbiosis

Hebitate

Skip

Question # 9

During the combustion of fossil fuel. Which gas is ener the atmosphere.

Choose an answer

Nitrogen

Oxygen

Carbon di oxide

Hydrogen

Skip

Question # 10

------------- through the food chain is one of the most important functionsof an ecosystem in maintaining balance of nature.

Choose an answer

Waisting of energy

Destroy fo energy

Transfer of energy

Produce of energy

Skip

Back