I presume you are referring to t<span>he fossil plant Elkinsia polymorpha, which is considered the earliest known seed plant, producing seeds along its leaves. </span>
Answer: The question is not complete, the options are not given.
But the correct answer is.
They are likely symbiotic with the dorminant species.
Explanation:
A keystone species is a species which has disproportionately large effect on the communities it hold together by maintaining the biodiversity of the ecosystem and causing the abundance of other organisms present in the ecosystem. They play a role in the existence of species present in their environment.
The tree types of keystone species are predators, mutualist and ecosystem engineers.
A chart. To count reps and such. And know when to add more weight of the bars and the like.
The answer to the question is D as the purpose for a control group is to be a comparison to the experimental group (the group that is a part of the experiment)
Meiosis 2 or equational division
During the interphase that precedes the second division, there is no duplication of chromosomes, since each of them had already duplicated before meiosis 1.
Meiosis 2 is very similar to mitosis. During the metaphase 2, the chromosomes are located in the equatorial plate of each haploid cell. Chromatids, each with its centromere, separate and migrate to the cell poles during anaphase 2. They are non-identical following genetic recombination of meiosis 1.
At the end of the telophase of the second division of meiosis or equational division, we obtain four haploid daughter cells each having a simple set of non-duplicated chromosomes.