Scientists have recently discovered a new species that lives attached to the side of a tree. This organism
- is multicellular
- has vascular tissues
- has membrane bound organelles
The scientists put the organism in a sealed glass container filled with carbon dioxide and oxygen for several hours. Which of the following is evidence that this new species is an animal?
a
decrease in phosphate levels
b
decrease in nitrogen levels
c
increase in oxygen levels
d
increase in carbon dioxide levels

D

Explanation:

Animals and plants  preform a process known as cellular respiration.

This process is:

oxygen+glucose--> carbon dioxide+ water + ATP (energy)

If a plant was placed in this container with carbon dioxide and oxygen, it would preform cellular respiration, but it would also use another process called photosynthesis:

carbon dioxide+water+light energy-->oxygen+glucose

Since a plant performs both, the levels of carbon dioxide and oxygen wouldn't change a lot.

However, if this was an animal, the carbon dioxide levels would increase. An animal would inhale oxygen, use it in cellular respiration, and then exhale carbon dioxide as a waste product.

Therefore, the correct answer is D: increase in carbon dioxide levels.

answer; the above answer to the above statement is (true)

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