Prothallus represents a gametophyte in the life
cycle of fern.
<span>A prothallium, or </span>prothallus<span> (from Latin pro = forwards and Greek θαλλος
(thallos) = twig) is usually the gametophyte stage in the life of a fern or
other pteridophyte. Occasionally the term is also used to describe the young
gametophyte of a liverwort or peat moss as well.</span>
The correct answer between all
the choices given is the second choice or letter B. I am hoping that this
answer has satisfied your query and it will be able to help you in your
endeavor, and if you would like, feel free to ask another question.
D. <span>The cells show characteristics of tumors.
Hope this helps(;</span>
Immunoglobulins are produced by D. plasma cells, a type of leukocyte. They are produced in response to the foreign bodies that enter the body. The immunoglobulins are also known as antibodies. The immune response of the antibodies is quite complex and highly specific to the type of antigen it binds to. There are five types of immunoglobulins in the mammals, they are IgA, IgD, IgE, IgG and IgM.
Answer:
A particular population limiting factor or factors must have been removed
Explanation:
The population of the birds must have been kept between 30 and 50 individuals by population limiting factors such as the presence of predators within the community or competition for resources such as food or spaces.
For the population to shoot up to 90 all of a sudden, it may be that one or more of the population limiting factors has been removed from the population. <u>It could be that a major predator has been removed from the community or the competition for food/space is now significantly reduced due to more food/space in the community. </u>