When flowering plants reproduce by sexual reproduction, they form seeds contained into fruits. The fruit is derived from the maturation of the flower's ovary (female part) after fertilization.
A mature seed contains three generations:
a diploid embryo (the new sporophyte),
The embryo is surrounded by haploid female gametophyte tissue that supplies nutrition
All the above structure is in turn surrounded by the seed coat (diploid parental sporophyte tissue). The seed coat is produced by integument cells to protect the embryo during its development and before its can germinate. As it is produce by it parental plant, its ploidy level diploid.
In contrast, the generative nucleus and sperm cell are part of male gametophyte (pollen grain) and therefore haploids. Synergid cell is part of embryo sac, therefore belongs to female gametophyte and thus being haploid. Finally, cell of endosperm is usually derived from the fusion between a sperm cell and one of the two female gametes present within the embryo sac, thus being triploid.
This is plant cell I got it from the safari hope it works and I think the other one is an animal cell try searching up the image and try looking the similar shape.
Cornwallis had marched his army into the Virginia port town earlier that summer expecting to meet British ships sent from New York. ... Cornwallis' surrender at Yorktown effectively ended the Revolutionary War. Lacking the financial resources to raise a new army, the British government appealed to the Americans for peace
When a substance emits light which is not a result of heat, then such a spontaneous emission fo light is known as luminescence.
Several chemical reactions or electrical energy can lead to the production of luminescence by organisms.
The enzyme that is responsible for the production of bioluminescence by the organism is luciferase and it is capable of producing luminescence by catalyzing oxido-reductive processes.
Luminescence is also produced in bacteria, and it is often controlled by the process of quorumsensing.
