Which type of glycoprotein is responsible for stinging sensation in some plants?

Which type of glycoprotein is responsible for stinging sensation in some plants?

• A. Dermal tissue
• B. Parenchyma cells
• C. Sclerenchyma cells
• D. Collenchyma cells

Answer: (A)

The type of glycoprotein responsible for the stinging sensation in some plants is indeed related to dermal tissue. Dermal tissue serves as the protective outer covering of the plant, and certain plants, such as nettles, have specialized structures in this tissue. These structures can include stinging cells that contain irritating compounds, often glycoproteins or other compounds that stimulate sensory nerves in humans and animals, leading to the stinging sensation. This reaction occurs because when the fine hairs or trichomes on the surface of the dermal tissue are broken, the contents are released and interact with the skin, triggering pain receptors. The dermal tissue is integral to plant protection, serving not only as a physical barrier but also as a means of chemical defense. Other choices like parenchyma cells, sclerenchyma cells, and collenchyma cells have different functions in the plant. Parenchyma cells are involved in storage and photosynthesis; sclerenchyma cells provide structural support and strength; collenchyma cells offer flexible support, particularly in growing tissues. None of these directly contribute to the stinging sensation attributed to specific glycoproteins found in the dermal tissues of certain plants.

The type of glycoprotein responsible for the stinging sensation in some plants is indeed related to dermal tissue. Dermal tissue serves as the protective outer covering of the plant, and certain plants, such as nettles, have specialized structures in this tissue. These structures can include stinging cells that contain irritating compounds, often glycoproteins or other compounds that stimulate sensory nerves in humans and animals, leading to the stinging sensation.

This reaction occurs because when the fine hairs or trichomes on the surface of the dermal tissue are broken, the contents are released and interact with the skin, triggering pain receptors. The dermal tissue is integral to plant protection, serving not only as a physical barrier but also as a means of chemical defense.

Other choices like parenchyma cells, sclerenchyma cells, and collenchyma cells have different functions in the plant. Parenchyma cells are involved in storage and photosynthesis; sclerenchyma cells provide structural support and strength; collenchyma cells offer flexible support, particularly in growing tissues. None of these directly contribute to the stinging sensation attributed to specific glycoproteins found in the dermal tissues of certain plants.