Question - Single-celled organisms must be able to...
Answer - D. perform all necessary functions with only one cell.
Why - Single celled organisms have a difficult time maintaining homeostasis, which means if they do maintain it, it just means instant death. Single celled organism have to work hard to perform necessary functions to live with just one cell.
Swollen lymph nodes usually indicate a common infection, but they can also signal a medical condition, such as an immune disorder or, rarely, a type of cancer. Lymph nodes are small, round structures that play a vital role in the body's immune system.
An endosperm develops in a seed after a process known as double fertilisation occurs in the ovary of a flower whereby one of the sperm nuclei inside a pollen grain reaches the interior of the embryo sac and fuses with the two polar nuclei forming a triploid nucleus which is the primary endosperm.
The endosperm supports embryonic growth by supplying nutrients and acting as a mechanical barrier to protect the embryo during seed development and germination.
The endosperm has living cells that regulate seed germination.
The endosperm is secreted with hydrolysis enzymes through the gibberellin hormone that induces the synthesis of amylase in the aleurone layer.
The hydrolysis enzyme catabolizes starch which act as energy source providing carbon and nitrogen for seed germination and seedling development.
