Question

The part which is crafted on stalk of another tree is called as
a) Graft
b) Bulbil
c) Bud
d) Scion

Answer 1

Hint: Grafting is a technique of asexual reproduction in plants. The part of a plant is grafted on stalk of another plant called scion. Graft age is a horticultural process by which tissues of plants are joined together in order to sustain their joint growth.

Complete answer:
In plants, grafting is most common method for asexual reproduction,
In this technique two plants of good varieties are chosen. Part of one plant is joined by another through vascular bundles. Apart from one plant of good variety grafted on another plant this part is called scion.
The part of the plant on which we join graft is called stalk.
Grafting is mostly used in mango, orange, grapes, etc.
Horticultural methods for combining components of two or more plants are grafting and budding to appear as a single plant. The upper portion (scion) of one plant develops in grafting on another plant's root system. A bud is taken from one plant and grown on another in the budding process.

So, the correct answer is option d) Scion

Note:
This technique is only applicable from dicot plants because vascular bundles are well arranged and in the monocot plants these are scattered. In grafting plants characters of scion plants are developed. The best season for grafting is spring. Graft age is a horticultural process by which tissues of plants are joined together in order to sustain their joint growth. The top section of the merged plant is the scion, and the bottom is the rootstock. The effectiveness of this relation requires that vascular tissues expand together and that connection is referred to as inosculation. This method is most widely used in commercially cultivated plant propagation asexually for the horticultural and agricultural businesses.