Define the following terms (i) Aestivation (ii) Placentation (iii) Actinomorphic (iv) Zygomorphic (v) Superior ovary (vi) Perigynous ovary (vii) Epipetalous stamen
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Define the following terms (i) Aestivation (ii) Placentation (iii) Actinomorphic (iv) Zygomorphic (v) Superior ovary (vi) Perigynous ovary (vii) Epipetalous stamen
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(i) Aestivation The mode of arrangement of sepals or
petals in relation to one another in a flower bud is
called aestivation.
(ii) Placentation The pattern by which the ovules are
attached in an ovary is called placentation.
(iii) Actinomorphic A flower having radial symmetry.
The parts of each whorl are similar in size and shape.
The flower can be divided in two equal halves along
more than one median longitudinal plane.
(iv) Zygomorphic A flower having bilateral symmetry.
The parts of one or more whorls are dissimilar. The
flower can be divided into two equal halves in only one
vertical plane.
(v) Superior ovary The ovary is called superior when it
is borne above the point attachment of perianth and
stamens on the thalamus.
(vi) Perigynous ovary It is the condition in which
gynoecium of a flower is situated in the centre and
Other parts of the flower are located on the rim of the
thalamus almost at the same level.
(vii) Epipetalous stamen Stamens adhere to the petals
by their filaments so, appear to arise from them