Question

Leaf-cutting is used for quick vegetative propagation of
(a) Sansevieria
(b) Jasminum
(c) Tea
(d) Blackberry

Answer 1

Hint: This is a historically recognized genus of the flowering plant and is found in Africa, Madagascar, and southern Asia. It often forms dense clumps from a spreading rhizome or stolons.

Complete answer:
Cutting of the longleaf of the Sansevieria plant can give rise to adventitious roots for plant growth as the leaf has meristem tissue at the tip as well as at the margins. The other options that are jasmine, blackberry, and tea are propagated by layering and stem cuttings. The formation of a new plant from vegetative portions of the plant-like roots, stem, or leaves is known as vegetative propagation. This happens with the help of specialized vegetative plant parts called meristem tissue that is commonly found in stems and leaves. Meristem is also found in tips of roots and stems. The roots of some plants like sweet potatoes have adventitious buds that develop into new plants by breaking off from the root. The vegetative propagation in sweet potato takes place by the roots which produce shoots or producing buds. The meristem tissue has cells that energetically divide by mitosis allowing plant growth. The plant has the ability to absorb excessive amounts of carbon monoxide and cleans the air better than other plants. Like the other plants, it emits oxygen but additionally filters toxins like xylene, benzene, formaldehyde, and trichloroethylene.
So, the correct answer is ‘Sansevieria’.

Note: African violet, peperomia, hoya, and sedum are examples of plants that can be propagated by leaf-petiole cuttings. The various types of vegetative propagation like grafting, cutting, layering, tuber, bulb or stolon formation, suckering, and tissue culture are examples of asexual reproduction. The offspring is a clone of the original plant. Examples are the rhizome of ginger, crops such as cassava, sugarcane, pineapple, banana, onion, etc.