AP BIOLOGY

PHOTOSYNTHESIS

PHOTORESPIRATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What gas do we breathe out that is needed by plants?
A
oxygen
B
carbon dioxide
C
nitrogen
D
water vapor
Explanation: 

Detailed explanation-1: -Exactly, photosynthesis allows the plants, the leaf to take in these ingredients and makes it into food. And so just as we exhale, the stomata also exhale out oxygen.

Detailed explanation-2: -This leftover oxygen is really important because humans and other animals need this oxygen to live which we breathe in from the air. When we breathe out, we release carbon dioxide into the air which is then used by the plants to make their food and the cycle starts all over again.

Detailed explanation-3: -During photosynthesis, plants take in carbon dioxide and give out oxygen as a byproduct.

Detailed explanation-4: -During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil. Within the plant cell, the water is oxidized, meaning it loses electrons, while the carbon dioxide is reduced, meaning it gains electrons. This transforms the water into oxygen and the carbon dioxide into glucose.

Detailed explanation-5: -Plants and algae perform photosynthesis, which converts atmospheric carbon dioxide and water to sugar using the energy from the sun.

There is 1 question to complete.