WorksheetsOur Environment Class 10-CBSE
Total questions: 12
Worksheet time: 7mins
Substances that are broken down by biological processes are said to be non-biodegradable.
True
False
Every food chain in the ecosystem begins with____which are the original source of food.
Saprophytes
Producers
Parasytes
Consumers
Which of the following are trophic levels? Choose 2 options:
Primary Consumers
Sunlight
Top Carnivores
Producers
Which among the following statements is incorrect in view of the plants?
They convert the solar energy into mechanical energy.
They prepare their food from organic compounds.
They are also called producers.
They are the initial source of energy in a food chain
All the interacting organisms in an area together with the non-living constituents of the environment form a/an __________.
ecosystem
nature
forest
city
As human beings occupy the top level in any food chain, the maximum concentration of these chemicals get accumulated in our bodies. This phenomenon is known as
Biological magnification
Biological accumulation
Chemical magnification
Chemical accumulation
Improvements in our life-style have resulted in greater amounts of:
energy generation
carbon dioxide generation
oxygen generation
waste material generation
What will happen if deer is missing in the food chain given above? Choose 2 correct options:
The population of tiger decreases
population of grass increases
The population of tiger increases
The population of grass decreases
Fill in the empty slots below:
An ecosystem consists of abiotic components comprising physical factors like:
1. ___soil ___
2.___________
3.___________
4. _minerals_
6.___________
temperature
rainfall
animals
wind
Which of the two belong to the same trophic level?
Frog
Monkey
Eagle
Lizard
Human-made materials like ____ will not be broken down by the action of bacteria or other saprophytes.
Vitamins
Fats
Carbohydrates
Plastics
There is ______ of energy as we go from one trophic level to the next
a gain
an increase
a loss
no change
