Disparities in mate attraction that alone account for differences in reproductive success An important aspect of evolutionary biology is sexual selection. The nature and scope of sexual selection, however, have been debatable since Darwin first proposed the idea of it.
Recent debate has brought the fundamental topic of what sexual selection actually is back into focus. Incorporating female-female reproductive rivalry into sexual or natural selection is one example of this.
Sex roles are determined by differences in gametes: men generate significantly more plentiful, smaller, motile gametes whereas females produce relatively fewer, more nutritious, often non-motile gametes. There will be an excess of male gametes that will not fertilize any eggs since just one gamete of each kind is necessary to generate a child.
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The complete question is:
If these organisms were arraigned in a food pyramid, which organism would have the least amount of total energy available?
- Producers
- Carnivore
- Herbivores
- Top predators
Answer: Top predators
Explanation:
The top predators get the least energy because according to the 10 per cent law the energy transfer only 10 energy is transferred to the next successive level.
The next level of the organism receives only 10 of the total energy that the previous level has.
Hence, the top predators have the least amount of energy in it as the energy is transferred through various levels before reaching top predators.
I believe the correct answer is C. Nektons include bony fish and squid.
The body contains about a trillion cells
Organism in which the embryonic blastopore becomes its anus Deuterostome
<u>Explanation:</u>
The term Deuterostome refers to second mouth. The first opening which is called blastpore becomes its anus in deuterostomes. In protostomes, this first opening will be the mouth. The other name given to these Deuterostomes enterocoelomates. It is the enterocoely from which the coelom of Deuterostom starts emerging and growing.
Chordata, Echinodermata, Hemichordata are the classes of deuterostomes:. The zygote is the one that gets developed first in protostomes and deuterostomes.Radial cleavage occurs in deuterostom in which the division of cells lies either in parallel direction or in perpendicular direction with respect to the polar axis.
