Concept explainers
Figure 32.3 If the anther is missing, what type of reproductive structure will the flower be unable to produce? What term is used to describe a flower that is normally lacking the androecium? What term describes a flower lacking a gynoecium?
To write:
Which type of reproductive system the flower will not be able to produce. The name of the flower that lacks androecium. The name of the flower that lacks gynoecium.
Introduction:
The main parts of the flower are calyx, corolla, androecium and gynoecium. The androecium is representing all the male reproductive parts and gynoecium represents all the female reproductive parts.
Explanation of Solution
Angiosperms are those plants which flower and the seeds produced are covered with carpel. The two distinct stages of plants are gametophyte and sporophyte. Through mitosis, the male and female gametes are produced. These gametes fuse to form a diploid zygote that develops to sporophyte that develops spores by meiosis.
During meiosis, the sporophyte gives rise to the male gamete, the pollen grain from the microspore and the female gamete, egg cell, from the megaspore. The megaspore and microspore cane be present in the same flower or different flowers. As both the spores are haploid, their fusion gives rise to a diploid zygote.
The anther or male gamete is a lobed structure having pollen grains for fusing with the egg cell. If the plant lacks this part, then the male gametes are absent leading to no reproduction. Hence, those flower lacking the androecium is called as a carpellate flower. Those flowers which lack gynoecium part is known as a staminate flower.
The flowers which do not have the anther will not be able to reproduce. The flowers without androecium are called carpellate flower and those without gynoecium is called as a staminate flower.
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