Question

Which type of tissue synthesises ethylene in larger quantities?

Answer 1

Hint: Ethylene is produced from the seeds, leaves, flowers, tubers, roots, stems, and fruits of higher plants. Ethylene is a gas generated by some vegetables and fruits. It is also called the fruit-ripening hormone. Its release causes them to ripen faster. All fruits have a specific level of ethylene production all through their lifetime. But, in some fruits, this level of ethylene shoots up as it begins ripening.

Complete step-by-step answer:
Ethylene in massive quantities is synthesised by the tissues which experience ripening, for example fruits and senescence. Ethylene affects senescence and maturation processes. It plays a key role in petal wilting, and in flower bud desiccation and abscission. It is also strongly produced during leaf and fruit senescence and abscission. It also adds to the fruit ripening. Ethylene is considered a multifunctional phytohormone that controls both senescence and growth. It inhibits or promotes the development and senescence processes depending on its concentration, timing of application, and the plant species. Some of the essential functions of ethylene are sex determination, senescence of leaves and flowers, the formation of adventitious roots, shoot and root growth, abscission of leaves and fruits, root development, and seed germination.

Note: The monocot stems do not contain trichomes. It mostly consists of rigid, organised, rectangular cells covered with a waxy substance called cutin. The internal structure of a monocot stem mostly encompasses a well-developed ground tissue, hypodermis, epidermis, and several dispersed vascular bundles. Examples of monocot stems are lilies, onions, tulips, and garlic. The vascular bundles are dispersed irregularly around the ground tissue. The monocot stem contains a sclerenchymatous bundle sheath on the exterior side of a vascular bundle.