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Assertion: The prominent symptom of mang...

Assertion: The prominent symptom of manganese toxicity is the appearance of brown spots surrounded by chlorotic veins.
Reason: Excess of maganese may induce deficiencies of iron, magnesium and calcium.

A

If both assertio and reason are true and reason is the correct explanation of assertion

B

if both assertion and reason are true but reason is not the correct explanation of assertion

C

if assertion is true but reason is false

D

if both assertion and reason are false

Text Solution

AI Generated Solution

The correct Answer is:
To solve the assertion-reason question regarding manganese toxicity, we can break it down into clear steps: ### Step-by-Step Solution: 1. **Understanding Manganese Toxicity**: - Manganese toxicity occurs when the concentration of manganese in the plant exceeds the desired level. This high concentration can be harmful to the plant. 2. **Symptoms of Manganese Toxicity**: - One of the prominent symptoms of manganese toxicity is the appearance of brown spots on the leaves, which are often surrounded by chlorotic (yellowing) veins. This symptom indicates that the plant is experiencing stress due to excess manganese. 3. **Effect of Excess Manganese**: - Excess manganese competes with the uptake of essential nutrients like iron, magnesium, and calcium from the soil. This competition can lead to deficiencies in these nutrients. 4. **Deficiency Symptoms**: - The deficiency of iron leads to chlorosis (yellowing) of the veins, while the overall nutrient imbalance can cause the development of brown spots on the leaves. Therefore, the symptoms of manganese toxicity (brown spots and chlorotic veins) are directly related to the deficiencies it induces. 5. **Evaluating the Assertion and Reason**: - The assertion states that the prominent symptom of manganese toxicity is the appearance of brown spots surrounded by chlorotic veins, which is true. - The reason states that excess manganese may induce deficiencies of iron, magnesium, and calcium, which is also true. - Since the reason explains why the assertion is true, we conclude that both the assertion and reason are correct, and the reason is the correct explanation of the assertion. ### Conclusion: - Both the assertion and the reason are true, and the reason accurately explains the assertion. ---
To solve the assertion-reason question regarding manganese toxicity, we can break it down into clear steps: ### Step-by-Step Solution: 1. **Understanding Manganese Toxicity**: - Manganese toxicity occurs when the concentration of manganese in the plant exceeds the desired level. This high concentration can be harmful to the plant. 2. **Symptoms of Manganese Toxicity**: ...
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