WorksheetsOur environment - part 1
Total questions: 10
Worksheet time: 5mins
Disposable plastic plates should not be used because ————.
they are made up of light weight material
They are made of toxic materials
they are made up of biodegradable materials
they are made up of non-biodegradable materials
Which of the following groups contain only biodegradable items?
grass, flowers, leather
grass, wood, plastics
fruit peels, cake and lime juice
cake, wood, grass
What will happen if deer is missing from the food chain: grass → deer → Tiger?
the population of tiger will increase
tiger will start eating grass
the population of grass decrease
population of tiger decrease and grass increases
Which is incorrect:
all green plants and blue green algae are producers
green plants get their food from organic compounds
producers prepare food from inorganic substances
plants convert solar energy to chemical energy
The % of solar radiation absorbed by all green plants for photosynthesis is about ——–.
1%
5%
8%
10%
If a grasshopper is eaten by frog, then the energy transfer will be from:
producers to decomposers
producer to primary consumer
primary consumer to secondary consumer
secondary consumer to primary consumer
The organisms of higher trophic level which feed on several types of organisms belonging to lower trophic level, constitute the—————–.
food web
ecological pyramid
ecosystem
food chain
Which is non-biodegradable?
wood, paper, leather
polythene, detergent, grass
plastic, detergent, glass
plastic, Bakelite, DDT
In a given food chain the amount of energy at fourth trophic level is 5 KJ, what will be the energy at producer level?
5KJ
50KJ
500kJ
5000KJ
The excessive exposure of humans to UV rays results in:
damage immune system
skin cancer
peptic ulcers
damage to lungs
