Food Chain and Food Web

Explain the primary, secondary and tertiary consumers in an ecosystem with examples.

Choose an example of secondary consumer from the following options.

What do you mean by secondary consumers?

What you mean by primary consumers? Give examples of them.

Explain about the position of tertiary consumers in a food chain.

Tertiary consumers come at the bottom of a food chain.

Bears are example of _____ consumers.

Rabbit is a tertiary consumer.

Explain about tertiary consumers.

An ecosystem is a system composed of biotic components and abiotic components.

The nutrient cycle is defined as a repeated pathway of a particular nutrient from the environment through one or more organisms and then back to the environment in a characteristic path which is more or less circular.

What is also known as the biogeochemical cycle?

Secondary consumers are those which feed on primary consumers (herbivores). They can either be carnivores or omnivores.

In the following food chain, plants provide $2000 \mathrm{J}$ of energy to rats. How much energy (in joules) will be available to hawks from the snakes?

$\mathrm{Plants}\to \mathrm{Rats}\to \mathrm{Snakes}\to \mathrm{Hawks}$

How many types of ecological pyramids are there?

An ecological pyramid is a graphical representation made to show the biomass at each trophic level in an ecosystem.

In the following food chain, $5 \mathrm{J}$ of energy is available to man. How much energy (in joules) was available at the producer level?

$\mathrm{Plant}\to \mathrm{Sheep}\to \mathrm{Man}$

_____ are those species that depend on dead and decaying matter for food.

_____  (producers/consumers) are those species that depend on plants for food directly or indirectly.

_____ are those species that can prepare their own food from simple inorganic substances. For example: plants.