Question

name the four whorls of a flower and write their function.

Answer 1

1. first whorls -green sepals (collectively called calyx)
2. second whorls - large brightly coloured petals ( collectively called corolla)
3. third whorls - long thread-like processes somewhat projecting out and each usually ending bilobed tip these are stamens (collectively named androecium) . each stamen consists of thread -like filament and bilobed anther
4. fourth whorls - centrally located pistil.

Answer 2

In plants, the flowers are mainly meant for reproduction

The different whorls of a flower:

Calyx

• Present in the outside part of the flower

• It consists of sepals.

• It is a green leaf-like structure

• The bud is present inside the calyx with a covering that protects it

Corolla

• It consists of separate or fused petals

• The inner whorl of the perigonium also called as perianth is present in a spiral pattern above the Calyx

• The only one unit of the corolla is petal which is used in the process of pollination

• Used for the reproduction process in plants

Androecium

• Male part of a flower is Androecium

• It is composed of a long tube and in its tip, an anther is attached

• The anther is a bi-lobed structure and pollen sacs are found inside the lobe

• Microspheres are produced by the pollen grains that are present in the pollen sacs
• Since it is a bilobed structure pollen grains containing male gametes are present in another lobe

Gynoecium

• The innermost  whorl of a flower

• The female reproductive part of a flower is Gynoecium which is responsible for the reproduction process

• It is also referred to as pistil