0
The exine, the outer layer of the pollen grain, should be hard to protect the delicate genetic material inside from environmental stresses, such as UV radiation, desiccation, and microbial attack. A tough exine ensures that the pollen can survive the journey to the stigma of a compatible flower, which is crucial for successful fertilization and reproduction. Additionally, a hardened exine aids in the dispersal of pollen by wind or animals, ensuring that it reaches appropriate locations for germination.
What else can I help you with?
What is exine?
what is endothecium
What are exine seeds?
In botany 'exine' is the outer coat, or the outer layer, of the wall of a pollen grain. It is composed of a durable organic polymer
What are the 3 parts of a pollen grain?
The three parts of a pollen grain are the exine (outer layer), intine (inner layer), and the cytoplasm containing the male gametes. The exine is composed of sporopollenin and helps protect the pollen grain during transportation and fertilization.
How can we make sporopollenin?
Sporopollenin is complex compound present in the exine of pollen grains. As such, it can be extracted from pollen grains.
Why is exine of pollen grain not a continuous layer?
The exine of a pollen grain is not a continuous layer because it has openings called germ pores or colpi, which allow for the entry of pollen tubes during fertilization. These pores are necessary for the reproductive success of the plant as they facilitate the transfer of genetic material from the male gametophyte to the female reproductive structures.
What is sporoderm?
Sporoderm is the outermost protective wall around the pollen grain or microspore. It is made up of many layers. The two main layers are Exine and Intine. Exine is outer while Intine is inner layer of sporoderm.
Is a bagel hard?
No, a bagel should not be hard.
Why should you do hard work?
you do hard work to get something good out of it
When you wear a hard hat the space between your head and the shell of the hard hat should be?
That space should be at least one inch and the inner frame of the hard hat should be secure and adjusted accordingly.
How hard should you spank your girlfriend?
depending how hard she likes, and what mood she is in
Why should you drink hard water?
More minerals in hard water
should hard coated seeds be discarded why or why not?
Yes because it is hard
