Roles of Organisms in Ecosystems

The video tutorial discusses the derivation of products from plants, animals, and insects, highlighting the importance of natural vegetation. It explains how plants provide essential resources like timber, oxygen, and food, while animals and insects offer products like milk, meat, and honey. The tutorial also covers the interdependence of life forms within the biosphere, emphasizing the roles of herbivores, carnivores, and decomposers in maintaining ecological balance.

Which of the following is NOT a product derived from plants?

• Wool

• Oxygen

• Latex

• Timber

What role do shelter belts play in agriculture?

• They act as decomposers.

• They produce oxygen.

• They help in storing underground water.

• They provide timber.

Which of the following is a product obtained from insects?

• Milk

• Honey

• Wool

• Timber

How do vultures contribute to the environment?

• By producing honey

• By providing wool

• By acting as scavengers

• By pollinating flowers

Which of the following is NOT a role of birds in the ecosystem?

• Acting as decomposers

• Feeding on insects

• Pollinating flowers

• Providing milk

What is the biosphere?

• A water body

• A type of plant

• A type of animal

• A zone where life exists

Which realms of Earth are mentioned as habitats for various life forms?

• Land, water, and air

• Mountains, rivers, and forests

• Cities, villages, and towns

• Deserts, oceans, and skies

What do herbivores rely on for their survival in a forest ecosystem?

• Aquatic life

• Green plants

• Decomposers

• Carnivores

What is the primary source of food production for green plants?

• Air and wind

• Sunlight and water

• Soil and minerals

• Fire and heat