Energy Transfer in Ecosystems

The video explains how plants convert sunlight into energy stored in various parts like fruits and leaves. This energy is transferred to consumers when they eat plants, and further transferred to carnivores when they eat herbivores. Decomposition by microorganisms recycles nutrients back into the soil, which plants use to grow. Only 10% of energy is transferred at each step, with the rest used for physical activities. The Sun is the primary energy source for all living beings.

What role do plants play in the ecosystem?

• They are primary consumers.

• They are secondary consumers.

• They are decomposers.

• They are primary producers.

How do consumers use the energy they obtain from plants?

• For physical activities and growth

• For photosynthesis

• For producing sunlight

• For decomposition

What happens to the energy stored in herbivores when they are eaten by carnivores?

• It is used for photosynthesis.

• It is lost completely.

• It is stored in the soil.

• It is transferred to the carnivores.

What is the process called when a carnivore's body is broken down after death?

• Decomposition

• Transpiration

• Photosynthesis

• Respiration

What percentage of energy is transferred between living beings at each step?

• 100%

• 50%

• 10%

• 90%

What happens to the remaining 90% of energy that is not transferred between living beings?

• It is used in physical activities.

• It is lost to space.

• It is stored in the soil.

• It is converted into sunlight.

What is the primary and universal source of energy for all living beings?

• The Sun

• The Ocean

• The Earth

• The Moon