Question

Woody plants carry gaseous exchange through
(1) Root hair
(2) stem hair
(3) lenticels
(4) epidermal cells

Answer 1

Hint: The process by which water vapor and oxygen leave and carbon dioxide enter plant leaves is known as gas exchange. Plants, on the whole, use carbon dioxide and produce oxygen. Stomata and Guard Cells are two types of cells in the skin. The gases enter and exit the plants via specialized openings on the lower surface of the leaf.

Complete answer:
A woody plant has a hard stem and produces wood as structural tissue. In cold climates, woody plants continue to grow above ground during the winter or dry season, as opposed to herbaceous plants, which die back to the ground until spring.

Woody plants are typically trees, shrubs, or lianas. These are typically perennial plants with wood produced from secondary xylem that reinforces the stems and larger roots. A layer of bark covers the main stem, larger branches, and roots of these plants. Wood is a structural tissue that allows woody plants to grow from above ground stems year after year, giving some woody plants the largest and tallest terrestrial plants.

Plants respire using oxygen and emit carbon dioxide as a byproduct of the process. Plants, unlike humans and animals, do not have specialized gas exchange mechanisms, but they do have stomata in leaves and lenticels in stems that are actively involved in gaseous exchange.

Lenticels promote oxygen, carbon dioxide, and water vapor exchange in plant bodies that produce secondary growth. Lenticels appear on stems and roots as raised circular, oval, or elongated areas. Lenticels are rough, cork-like structures that commonly appear on young branches of woody plants.

Thus, the answer is Option 3: Lenticels.

Note: Woody plants, like herbaceous perennials, typically have a dormant period of the year when no growth occurs, in colder climates due to freezing temperatures and a lack of daylight during the winter months, and in subtropical and tropical climates due to the dry season when precipitation is minimal. If the plant is deciduous, the dormant period will be accompanied by leaf shedding.