Energy and Matter in Ecosystems

Front

What is the source of energy for plants to make food?

Back

the sun

Answer explanation

The source of energy for plants to make food is the sun. Through photosynthesis, plants convert sunlight into chemical energy, allowing them to produce food from carbon dioxide and water.

Front

What is the food that plants make called?

Back

glucose

Answer explanation

The food that plants make during photosynthesis is called glucose. This sugar serves as an energy source for the plant, while oxygen is a byproduct, and carbon dioxide is a reactant in the process.

Front

How are plants beneficial to animals?

Back

they provide oxygen, shelter & food for animals

Answer explanation

Plants are essential for animals as they provide oxygen for respiration, shelter for protection, and food for nourishment. This makes the choice 'they provide oxygen, shelter & food for animals' the correct answer.

Front

What is the structure that plants use to breathe?

Back

stomata

Answer explanation

Plants breathe through structures called stomata, which are tiny openings on leaves that allow for gas exchange, including the intake of carbon dioxide and the release of oxygen.

Front

Does a food chain start with the sun?

Back

yes

Answer explanation

Yes, a food chain starts with the sun as it provides the energy necessary for photosynthesis in plants, which are the primary producers in the food chain.

Front

What is a consumer?

Back

an organism that eats other organisms for energy

Answer explanation

A consumer is defined as an organism that eats other organisms for energy. This distinguishes it from decomposers, which break down dead matter, and producers, which create their own food.

Front

What is a food web?

Back

a model that contains many food chains

Answer explanation

A food web is a complex model that illustrates how various food chains interconnect within an ecosystem, showing the relationships between different organisms and their energy sources.

Front

Does a food chain show how energy and matter flow through an ecosystem?

Back

True

Answer explanation

True. A food chain illustrates the transfer of energy and matter through different trophic levels in an ecosystem, showing how organisms are interconnected.

Front

If there is a change in the environment, organisms may either die or have to leave.

Back

true

Answer explanation

The statement is true because when an organism faces environmental changes, it must adapt, relocate, or it risks dying. Thus, the only options are to leave or perish.

Front

Where do plants get most of their weight from?

Back

air

Answer explanation

Plants get most of their weight from air, specifically carbon dioxide, which they absorb during photosynthesis. This process converts CO2 into glucose, contributing significantly to their mass.