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(A, C) Statement $A$ is correct. The Casparian strip is a band of suberized cell wall material found in the endodermis of roots. It acts as a barrier,

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In the absence of Casparian strips,plants are unable to control the amount of water and solutes they absorb.

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(A, C) Statement $A$ is correct. The Casparian strip is a band of suberized cell wall material found in the endodermis of roots. It acts as a barrier,forcing water and solutes to pass through the plasma membrane,thereby allowing the plant to regulate the uptake of water and minerals.Statement $B$ is incorrect. Guttation occurs when there is high soil moisture and low transpiration,typically during high atmospheric humidity (often at night or early morning),not low humidity.Statement $C$ is correct. According to the active $K^{+}$ transport theory (Levitt's theory),the influx of $K^{+}$ ions into guard cells is the primary mechanism for stomatal opening.Statement $D$ is incorrect. In $CAM$ plants,stomata remain open at night to take in $CO_{2}$ and remain closed during the day to prevent water loss.

Read the following statements and choose the correct answer from the options given below.

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