Question

1 - photosynthesis and the carbon cycle
learning objective: determine how carbon is cycled between plants and animals.
which of these is a process in the carbon cycle?
a.) animals eat plants and receive carbon as sugars and other compounds.
b.) microorganisms take carbon from the atmosphere and convert it into usable forms.
c.) carbon enters the atmosphere through the transpiration of plants.
d.) when fossil fuels are burned, they absorb carbon from the atmosphere.

Explanation:

• Option a: Animals consume plants and obtain carbon - this is part of the carbon cycle as carbon moves from plants to animals.
• Option b: It's plants (through photosynthesis), not microorganisms, that mainly take carbon from the atmosphere and convert it into usable forms.
• Option c: Transpiration is the loss of water vapor from plants, not a process by which carbon enters the atmosphere.
• Option d: When fossil fuels are burned, they release carbon into the atmosphere, not absorb it.

Answer:

A. Animals eat plants and receive carbon as sugars and other compounds.