CALYX
1. The calyx consists of sepals.2. The sepals are normally green and may be free or fused.
3. Some sepals are brightly coloured and may therefore attract animals to pollinate the flower
FUNCTION OF THE CALYX
1. The calyx protects the flower when it is in the bud stage.2. It is photosynthetic because it contains chlorophyll.
COROLLA
1. It consists of petals.2. In many flowers, petals are large and brightly coloured and may contain sugary fluid called nectar.
3. Insects and some birds feed on the nectar for energy whilst bees use it to make honey.
FUNCTIONS OF COROLLA
1. It attracts insect and birds which may carry pollen grains for pollination.2. It protects the innebpart of the flower.
STAMEN
1. Stamens are the male reproductive parts of the flower .2. They consists of an anther and a filament.
FUNCTIONS OF STAMEN
1. The stamens produce male sex cells.2. The filament supports the anther.
3. The anther contains pollen sac, which produces pollen grains.
THE PISTIL
1. Pistil is the female reproductive part of the flower.2. It consists of three parts namely;
i . Ovary which contains ovules.
ii . Stalk which hold the stigma in position so as to receive pollen grains.
iii . Stigma which receives pollen grains during pollination.
FUNCTIONS OF A PISTIL
It produces the female sex cells or eggs.
STRUCTURE OF THE PISTIL
STRUCTURE OF THE STAMEN
NOTE: Stamens and pistils are referred to as the essential parts of the flower whilst the calyx and Corolla are non-essential parts
THE RECEPTACLE
The receptacle is the top part of the flower stalk, where the parent of the flower are attached. It is often rounded in shape.
ASSIGNMENT
Draw a PISTIL and label the parts.
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