Question

What do the male and female gametophytes of flowering plants produce?
(a)Megaspores; Eggs
(b)Eggs; Sperm
(c)Sperm; Microspores
(d)Sperms; Eggs

Answer 1

It’s present in vascular flowering plants and fertilization occurs by the process of double fertilization. The pollen grain carries the male gametophyte which is similar and is present as two in number.

Complete answer:
The male and female gametophytes of flowering plants produce sperm; eggs.
The pollen grains are the extremely reduced haploid male gametophyte formation in vascular flowering plants, which contains just 2 or 3 cells when liberated from the anthers. The duty of pollen grains is to transport two similar sperm cells to the embryo for the fertilization to take place with the egg and central cell. The flowering plants have female gametophyte which gives rise to two female gametes that are the egg cell and central cell. The egg cell and central cell will undergo double-fertilization with the male gametophyte (twin sperm cells).

Additional Information: -Double fertilization is a highly integrated fertilization process in flowering plants where the process contains the fusion of a female gametophyte (egg cell) with the twin male gametes (sperm)
-The process starts with the pollen grain sticking to the female reproductive structure of a flower, that is the stigma in the carpel.
-The moisture is used by the pollen to germinate, creating a pollen tube that stretches down to the ovary, passing through the style. The twin sperm cells are liberated by the pollen tube in the megagametophyte.
So, the correct answer is 'Sperms; Eggs'

Note: -Pollen is considered a common allergen because pollen grains carry several proteins that usually cause allergic reactions. They are harmless to humans generally, but individuals with hypersensitivity will be allergic to pollen.
-Double fertilization was found several decades ago by Sergei Nawaschin and Grignard who independently observed the process of double fertilization.
-Plants use other animals to deliver pollen to other plants. These kinds of organisms are called carriers, which are usually small insects, honey bees, and beetles.