Plant Nutrition (Grades 11-12)
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Plant Nutrition
1.
What are the four elements found in the highest concentrations within plants?
- phosphorus, calcium, zinc, carbon
- carbon, hydrogen, oxygen, nitrogen
- magnesium, sulfur, oxygen, potassium
- iron, lead, nitrogen, hydrogen
2.
Which element do plants NOT obtain directly from the soil?
- carbon
- nitrogen
- potassium
- zinc
3.
Which mineral is a component of both proteins and nucleic acids?
- magnesium
- iron
- potassium
- nitrogen
4.
Which element would need to be added to the soil in order for a plant to form membranes and nucleic acids?
- phosphorus
- potassium
- nitrogen
- carbon
5.
What is an advantage of using inorganic fertilizers when growing plants?
- They improve the physical properties of the soil.
- They can be taken in almost immediately by the roots.
- They are of higher quality than organic fertilizers.
- They contain minerals that are in their proper ionic form.
6.
A nitrogen deficiency in plants is often characterized by what symptom?
- The young leaves become yellow.
- The young leaves turn orange.
- The old leaves turn yellow.
- The old leaves turn orange.
7.
Plants often use the essential element as a chemical messenger.
8.
Decomposed plant litter produces a dark colored organic material called .
9.
What happens during the process of nitrogen fixation?
10.
Which statement about mycorrhizae is true?
- They spread by way of plant seeds.
- They form structures that do not need oxygen.
- They increase the surface area of the roots.
- They are found only in tropical species of plants.
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