Pappus is modified
calyx
corolla
bracts
gynoecium
A.
calyx
The pappus is the modifed calyx, the part of an individual floret that surrounds the base of the corolla tube in flower heads of the plant Asteraceae. It basically functions as a parachute for the dispersal of- eg, Sonchus, Tagstes. Hence the mechanism is parachute mechanism.
Justify the following statements on the basis of external features:
(i) Underground parts of a plant are not always roots.
(ii) Flower is a modified shoot.
How is a pinnately compound leaf different from a palmately compound leaf?
Explain with suitable examples the different types of phyllotaxy.
Define the following terms:
(a) aestivation
Define the following terms:
(c) placentation
Define the following terms:
(c) actinomorphic
Define the following terms:
(d) zygomorphic
Define the following terms:
(e) superior ovary
Define the following terms:
perigynous flower
Define the following terms:
epipetalous stamen
Mock Test Series
