Question

Explain
TOWN 18
(i) Is it possible to recognise
leaves of a plant without seeing
it? How?
(ii) Will a leaf taken from a
potted plant kept in dark for a
few days turn blue - black when
tested for starch: Give reason
for your answer.​

Answer 1

Answer:

• Yes. We can recognize leaves without seeing them. You can look for the type of roots of the plant and identify the type of leaf. If the plant has fibrous roots, then its leaves have parallel venation, and if the plant has tap roots, then its leaves have reticulate venation.
• When the leaf was kept in dark room it used all the starch that was reserved for various activities of the plant. Further, the leaves were not able to synthesize starch in absence of sunlight. So, the leaf will not turn blue back when tested for starch.

Answer 2

Answer:

mene sare answer pr thanks d diy ok