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Plant Tissue System - Epidermis, Cortex and Related Structures
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Waxy coating on epidermis of young stem is called
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A
Cuticle
💡 Explanation:
A cuticle is the waxy layer present on the epidermis of a young stem which generally curtails the water loss by transpiration.
Phellem (the cork) consists of cells that are dead at maturity and their primary walls become covered from the inside by the secondary wall which consists of parallel suberin lamellae alternating with wax layers.
The periderm is the secondary protective (dermal) tissue that replaces the epidermis during growth in thickness of stems and roots of gymnosperms and dicotyledons. Suberin is a waterproofing waxy substance found in higher plants. Suberin is a main constituent of cork and is named after the cork oak, Quercus suber. Its main function is as a barrier to movement of water and solutes.
Thus, the correct answer is option D.
The periderm is the secondary protective (dermal) tissue that replaces the epidermis during growth in thickness of stems and roots of gymnosperms and dicotyledons. Suberin is a waterproofing waxy substance found in higher plants. Suberin is a main constituent of cork and is named after the cork oak, Quercus suber. Its main function is as a barrier to movement of water and solutes.
Thus, the correct answer is option D.