Concept:
In plant tissue culture, plants produced from a single parent plant through vegetative propagation are genetically identical and are called clones or somaclones.
Step 1: Define somaclones.
Somaclones are:
• Plants produced through tissue culture
• Genetically identical to the parent plant
Step 2: Analyze options.
• Somatic hybrids → fusion of two different cells
• Somaclones → identical clones (correct)
• Single cell explants → starting material, not final plant
• Homozygous twins → not related to plants
Step 3: Final conclusion.
Thus, such plants are called:
\[
Somaclones
\]