Number of producer depends on ecosystem we are talking about. I am taking this question as terrestrial ecosystem so for the terrestrial ecosystem the answer will be group D.
In terrestrial ecosystem number of producer is higher than the second trophic level that is primary consumer. To study this we use pyramid of number. In most cases the pyramid of number is upright with members of successive higher trophic level being fewer than the previous one. The maximum number of individuals occurs at the producer level.
I believe it is group D
B. A decrease in gene flow
C. An increase in gene flow
D. an increase in genetic drift
Reproductive isolation within a species causes is an increase in gene flow. The correct option is C.
Reproduction isolation is a mechanism constituted by some factors like behavior, physiological process, etc. by which the species does not reproduce with other species.
Gene flow is the flow of genes in forward generations, and reproduction isolation increase the gene flow within species.
Thus, option C. An increase in gene flow is correct.
Learn more about reproductive isolation, here:
#SPJ2
Answer:
c
Explanation:
i did this in class a few days ago i know this is right
Answer:
The producers can be described as organisms which are able to make their own food through the process of photosynthesis. Phytoplankton is hence the producers in this food chain.
Primary consumers can be described as organisms which feed on the producers. Copepods are the primary consumers in this food chain.
Secondary consumers can be described as organisms which feed on the primary consumers in a food chain or food web. Sea-nettle jellyfish is the secondary consumer in the above food chain.
B. Eukaryotic species experience a greater rate of mutations within their populations.
C. Mutations increase the genetic diversity in both prokaryotes and eukaryotes.
D. Sexually reproducing eukaryotes evolve faster than species that reproduce asexually.
Answer:
C. Mutations increase the genetic diversity in both prokaryotes and eukaryotes.
Explanation:
It is a well-established fact that mutations increase the genetic diversity in living organisms (especially if they are positive mutations). The positive and faster mutations will help the organism to develop better traits for survival in the changing environments.
The other options are incorrect because of the following reasons:
A. Eukaryotes don't do gene transfer via conjugation.
B. Eukaryotic species don't experience a greater rate of mutations as compared to the prokaryotes. Prokaryotes have a faster mutation rate. This is the reason that microbes can adapt to changing environments faster than humans or other multicellular organisms.
D. As mentioned above, sexually reproducing eukaryotic species evolves slower than the asexually reproducing species. For example, evolution in bacteria (e.g. drug resistance) is faster than any organism belonging to eukaryotic lineage.
Answer:
C . Mutations increase the genetic diversity in both prokaryotes and eukaryotes.
Explanation:
I took the test and that was the correct anwser.