Question

Axis developing between androecium and gynoecium is
(a) Anthophore
(b) Androphore
(c) Gynophore
(d) Gynandrophore

Answer 1

Hint: It is present between the androecium and gynoecium of a flower. It is the stalk of the flower responsible for raising the gynoecium above other parts of the flower.

Complete answer:
Gynophore is the axis that develops between the androecium and the gynoecium (Figure) . Some examples of plants in which gynophore is found are Michelia, Capparis, Gynandropsis.
- Following are the features of the calyx of a flower:
1. The outermost whorl of the flower is called the calyx.
2. A calyx is a group of sepals
3. Calyx helps in attracting insects for pollination when it becomes colored or starts producing nectar.
4. When calyx is free then it is called polysepalous and when they are united then they are called gamosepalous.
5. The main purpose of sepals (in a group called calyx) is the protection of flowers in bud condition.
- Following are the features of the corolla of a flower:
1. Corolla is the second whorl of the plant and is present inner to the calyx.
2. Corolla protects the male and female reproductive organs of the flower, which are stamen and carpels.
- Following are the features of the androecium of a flower:
1. Each stamen is composed of a slender stalk- like filament supporting a knob- like structure called the anther.
2. Each stamen usually consists of two anther lobes.
3. The two anther lobes are connected with the help of connective.
4. When only one kidney- shaped anther is present then such anther is known as monothecous.
5. When an anther contains two lobes then such another is known as dithecous.
6. Sometimes, the stamens become sterile and do not form pollen grains called staminodes.
7. When stamens are free from each other, such a condition is called polyandrous.
So, the correct answer is, ‘Gynophore.’

Note: Gynophore is generally a green rod- like structure while an anthrophore is an internode between calyx and corolla. A flower is a highly modified shoot and its main purpose is sexual reproduction.