The sperm of fern is [AFMC 1995]
A) Biciliate and coiled
B) Multiciliate and sickle-shaped
C) Multiciliate and coiled
D) Biciliate and sickle-shaped
Answers
The sperm of the fern is B) Muliciliate and sickle shaped.
The fern is a type of plant that belongs to the classification Pteridophytes. The first classification of organisms that contain the vascular system. It can reproduce sexually by formation of spores.
The gametophyte produces both the male and the female gametes that is the sperms and the egg on the same porthallus. The sperm fertilises the egg and the zygote remains attached to the tip of the same prothallus.
Answer:
Explanation:
The correct Answer is Multiciliate and coiled.
The object Multiciliate cells work clearly in the respiratory system, also in brain ependyma and in the reproductive tract of females to produce vigorous, a large quantity of fluid flow along the section called epithelial surfaces.
These are specialized kind of cells form in the course of development when epithelial progenitors are subjected to an unusual form of called callogenesis, where they assemble and project hundreds of motile cilia.
Notch inhibits generates cell formation in a wide state of epithelia, but the procedure of overcoming of progenitors to lateral inhibition and initiation of multiciliate cell differentiation is not yet known.