Class 10 Biology Master Quiz: Our Environment (CBSE 2024-25)

Bacteria

Humus

Plants

Fungi

Herbivores

Carnivores

Producers

Decomposers

$100\text{ J}$

$10\text{ J}$

$1\text{ J}$

$1000\text{ J}$

Paper

Vegetable peels

Plastic bottles

Cotton cloth

Action of $UV$ rays on $O_2$

Action of $IR$ rays on $O_2$

Combination of $O_2$ and $CO_2$

Accumulation of $CFCs$

The population of tiger increases

The population of grass decreases

The tiger starts eating grass

The population of tigers decreases and grass increases

Increase in body size of organisms in a food chain

Increase in the concentration of harmful chemicals at successive trophic levels

Increase in the number of organisms in a population

Growth of plants due to fertilizers

Grass, flowers, and leather

Grass, wood, and plastic

Fruit peels, cake, and lime juice

Cake, wood, and grass

Unidirectional

Bidirectional

Cyclic

Multidirectional

Chlorofluorocarbons ($CFCs$)

Carbon monoxide

Methane

Pesticides

First trophic level

Second trophic level

Third trophic level

Fourth trophic level

Primary consumers

Secondary consumers

Tertiary consumers

Producers

Forest

Pond

Lake

Crop field

$10\%$

$1\%$

$100\%$

$50\%$

Convert inorganic material to organic compounds

Convert organic material to inorganic forms

Trap solar energy and convert it into chemical energy

Do not depend on other organisms for food