The penis delivers sperm<span> through the urethra. The two testicles (or testes) produce</span>sperm<span> and the male sex hormone testosterone. Nest to each testicle, the epididymis is a light‑colored tube where </span>sperm<span> is stored. ... In the human </span>reproductive<span> process, two kinds of sex cells, or gametes, are involved.
Though i must say, this is quite inapprrporiate.
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The answer is C- facilitated diffusion.it is a type of passive transport. In facilitated diffusion particles move from higher concentration to lower concentration. So particles move along their concentration gradients , so energy is not required.
I took the test and the answer is not shear, so don't put that one. My next choice would have been strain.
Answer: The correct answer is-
Allopatric- option 2.
Sympatric - option 1.
Allopatric and sympatric are primarily the two major mechanisms for speciation ( formation of new species from an ancestral species).
In allopatric speciation, a population splits into two different species when it is isolated by physical or geographical barrier.
On the other hand, sympatric speciation occurs wihtin the same area. A population splits into two species that is becomes reproductively isolated when a change in the chromosome number occurs.
Thus, option first corresponds to sympatric whereas option second shows allopatric speciaton.
