Chlorosis, which is represented by a yellowish hue on the leaves, results from which of the following?
Correct answer: D. All of these
- A. Accumulation of toxic waste products in leaves
- B. Deficiency of chlorophyll
- C. Short supplies of mineral nutrients in the soil
- D. All of these
Explanation
Chlorosis can result from any of the following: the accumulation of waste products in leaves, a deficiency of chlorophyll, or a short supply of minerals. The specific cause of chlorosis can vary depending on the plant species, the growing conditions, and other factors. In some cases, chlorosis can be caused by a combination of these factors. For example, iron-deficient plants may also accumulate waste products in their leaves, which can lead to chlorosis. Similarly, a short supply of minerals in the soil can lead to nutrient deficiencies, which can cause chlorosis. Therefore, option D is correct.
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About Coordination and Control
Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
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