Question

Totipotency is present in
(a)Meristem
(b)Cambium
(c)Phloem
(d)Cork

Answer 1

They are a kind of tissue found in plants. It consists of undifferentiated cells capable of cellular division. Cells during this can become all the other tissues and organs that occur in plants. Differentiated plant cells generally cannot divide or produce cells of a special type.

Complete answer:
Totipotency is often defined because the ability of the only cells to divide and produce all of the differentiated cells in plants and thus, has the potential to grow back to make a full plant. Meristematic tissue is the undifferentiated tissue that has the power to divide continuously. At a later stage, the cells of meristematic tissues lose the power to divide and form the permanent tissues which are meant to carry out particular functions in plants.

Additional Information: It is feasible for a totally differentiated cell to restore to a state of totipotency. This conversion to totipotency is complex, not completely known, and the subject of recent research. Research in 2011 has shown that cells may differentiate not into a totally totipotent cell, but instead into a "complex cellular variation" of totipotency. Stem cells resembling totipotent blastomeres from 2-cell stage embryos can arise spontaneously in mouse embryonic somatic cell cultures.
Cambium is of two types- vascular and cork. Vascular cambium can form only xylem or phloem cells. Cork cambium can form only cork cells. Phloem is a permanent sort of tissue, which has lost its ability to divide. Cork is a non-living, waterproof tissue formed in many plants to stop water loss.
So, the correct answer is 'Meristem'.

Note: In 1902, a German Botanist, Professor Gottlieb Haberlandt, proposed the thought of Totipotency. He observes that every living cell of the plant parts can regenerate the whole plant body because it's gained from the embryo and carries genetic data.