the undifferentiated mass of cells formed during tissue culture is called
A- Explant B- Callus
C- Stock D-Scion
Answers
Answer:
B- Callus
Explanation:
A callus consists of an amorphous mass of loosely arranged thin-walled parenchymatous cells arising from the proliferating cells of the parent tissue. More often callus is confused by the term callose, which is a polysaccharide secreted by the plants (sieve elements) during any stress or microbial, insect, or any other pathogen attack. Calli can be obtained from almost any part of the plant. Frequently, as a result of wounding, a callus is formed at the cut end of the stem or root. It is more or less nonorganized tissue that contains differentiated (starting material for callus induction, e.g., leaves, root, shoot, etc.) as well as undifferentiated cells. It is also known that different types of callus in Arabidopsis thaliana have distinct gene expression profiles