Plant mineral requirements Quiz
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5 questions, one answer each
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1. Which ion is a component of the chlorophyll molecule?
- A. Nitrate
- B. Magnesium
- C. Calcium
- D. Sodium
2. What happens in cells when a plant is short of water?
- A. Cells become turgid and the plant stands up straight
- B. Cells burst
- C. Cells become more rigid
- D. Cells lose turgor and the plant wilts
3. Which is a function of calcium ions in a plant?
- A. Making calcium pectate for the middle lamella
- B. Making amino acids
- C. Making chlorophyll
- D. Making starch
4. Seedlings in a solution lacking nitrate have a mean dry mass of 40 mg, compared with 100 mg in the complete solution. What is the percentage decrease?
- A. 40%
- B. 50%
- C. 60%
- D. 150%
5. Why does nitrate deficiency stunt growth?
- A. Less cellulose is made for the cell wall
- B. Less nitrogen is available for proteins and nucleotides, so cells divide and grow less
- C. Nitrate is needed to open the stomata
- D. Nitrate is the source of carbon for photosynthesis