MCQ
When a dicot leaf is exposed to sunlight, the light rays first pass through the epidermis and then through:
- ALower epidermis.
- BSpongy parenchyma.
- CPalisade parenchyma.
- DVascular bundles.
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$R :$ The loop of Henle is responsible for the formation of a sodium gradient across the depth of the medullary intersitium of a mammalian kidney