Plant Propagation Techniques

Cropping is also known as trimming and is just done to keep plants short and bushy, resulting in many smaller buds. Hybridization is the process of combining different varieties or species of organism to create a hybrid. Tissue culture is a technique of growing explant (cell, tissue or organ) under in vitro (outside the living cell in a petriplate) conditions. Insemination is the introduction of sperm into the female uterus of a mammal. It takes place in animals. Therefore, the process of crossing between genetically dissimilar plant varieties is known as hybridization.

Plant breeding is the art and science of changing the traits of plants in order to produce desired characteristics. So, this is the correct option.

A ring of bark is removed from lower branch and it is bent down, and then it is covered by soft soil. After some months, roots develop and the branch is cut off, so that it can grow independently. It is done in case of grapes, lemon and strawberry. Hence, it is the correct option.

It is the part of a plant stem from which one or more leaves emerge.

Offsets  are the internode long runners which develop tuft of leaves at apex.

They arise from the base of erect shoot and grow horizontally in the soil.

Hydroponics is the cultivation of plants without soil, using nutrient-rich water solutions instead. Plant roots grow directly in water or inert media. It allows year-round cultivation and higher yields. It has nothing to do with sound detection, aquatic animals, or Japanese flower arrangement.

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A sucker is an aerial shoot springing from an underground stem or root. 

Agar-agar is a gelatinous substance derived from red algae, used as a solidifying agent in tissue culture media. It provides a semi-solid surface for plant tissue growth and nutrient absorption. It's not used in autopsy, foundries, or musical instruments. Its gelling properties make it ideal for laboratory cultivation.

Root is used for vegetative propagation of Dahlia.

Sugarcane is artificially propagated by cutting.

A process of uniting stock and scion while both are still growing independently is called inarching.

Different species of rose plants are propagated by different methods. They may be propagated by either cutting, layering or grafting.