Nitrogen is part of what vital substance in plant cells?

Nitrogen is part of what vital substance in plant cells?

A - Nectar
B - Chlorophyll
C - Glucose
D -Cellulose
E - Water


Answer: B - Chlorophyll


The nitrogen supplied by the chlorophyll allows for the plant to perform photosynthesis.

What term describes the process of converting atmospheric nitrogen to ammonia?

What term describes the process of converting atmospheric nitrogen to ammonia?

A - Denitrification
B - Nitrogen fixation
C - Ammonification
D -Nitrification
E - Assimilation


Answer: B - Nitrogen fixation

The relationship between nitrogen-fixing bacteria and legumes can best be described as

The relationship between nitrogen-fixing bacteria and legumes can best be described as

A - Commensalism
B - Parasitism
C - Amensalism
D -Symbiosis
E - Mutualism


Answer: E - Mutualism


The bacteria benefit from the legumes because they have an safe place to live. The plant has to put forth some energy to support the bacteria because they have an almost unlimited source of nitrogen.

The earth's atmosphere is made up of several components including carbon, oxygen, and nitrogen. About how much of the atmosphere is nitrogen?

The earth's atmosphere is made up of several components including carbon, oxygen, and nitrogen. About how much of the atmosphere is nitrogen?

A - 20%
B - 60%
C - 80%
D -8%
E - 40%


Answer: C - 80%


This is in the form of N2, which plants and animals cannot use so nitrogen fixation takes place to convert it to N3, ammonia.