Grade 6 Exploring Diverse Life Forms

What is the main source of energy for plants in an ecosystem?

• The Moon

• The Sun

• The Stars

• The Wind

Answer explanation

The main source of energy for plants in an ecosystem is the Sun. Through photosynthesis, plants convert sunlight into chemical energy, which is essential for their growth and sustenance.

Which of the following is a living organism?

• A rock

• A tree

• A cloud

• A river

Answer explanation

A tree is a living organism as it grows, reproduces, and carries out photosynthesis. In contrast, a rock, cloud, and river are non-living entities and do not exhibit these characteristics.

What do we call a group of the same kind of animals living together?

• A forest

• A pack

• A herd

• A school

Answer explanation

A group of the same kind of animals living together is called a herd. This term is commonly used for animals like cattle, elephants, and deer, distinguishing them from other group terms like pack (for wolves) or school (for fish).

Which of these is a producer in a food chain?

• A rabbit

• A lion

• A tree

• A fish

Answer explanation

A tree is a producer in a food chain because it performs photosynthesis, converting sunlight into energy. In contrast, a rabbit, lion, and fish are consumers that rely on other organisms for food.

What do animals need to breathe?

• Water

• Air

• Soil

• Sunlight

Answer explanation

Animals need air to breathe because it contains oxygen, which is essential for their survival. Water, soil, and sunlight do not provide the necessary gases for respiration, making air the correct choice.

Which of the following is a non-living thing?

• A bird

• A flower

• A mountain

• A cat

Answer explanation

A mountain is a non-living thing, while a bird, a flower, and a cat are all living organisms. Therefore, the correct answer is a mountain.

What do we call animals that eat only plants?

• Carnivores

• Herbivores

• Omnivores

• Insectivores

Answer explanation

Animals that eat only plants are called herbivores. Carnivores eat meat, omnivores eat both plants and animals, and insectivores primarily eat insects. Therefore, the correct answer is herbivores.

Which of these is an example of an ecosystem?

• A classroom

• A pond

• A car

• A book

Answer explanation

A pond is an example of an ecosystem because it consists of living organisms interacting with each other and their physical environment. In contrast, a classroom, car, and book do not represent ecological interactions.

What is the role of decomposers in a food chain?

• To make food

• To break down dead plants and animals

• To eat plants

• To hunt animals

Answer explanation

Decomposers play a crucial role in a food chain by breaking down dead plants and animals, recycling nutrients back into the ecosystem, and supporting new plant growth. This process is essential for maintaining ecological balance.

Which of these animals is a carnivore?

• A cow

• A sheep

• A lion

• A rabbit

Answer explanation

A lion is a carnivore, meaning it primarily eats meat. In contrast, a cow, sheep, and rabbit are herbivores, which means they primarily consume plants.