Answer AND Explanation:
MALES
Testes: they are oval shaped structures that produce the male gametes and sex hormone called testosterone.
Seminiferous tubules: tubules where spermatogenesis occurs.
Vas deferens: are tubules which lead to the epididymis.
Epididymis: is along, coiled tube for storage of sperms. it contraction and relaxation pushes sperms out and allows ejaculation through the urethra.
Accessory glands like the seminal vesicles, cowper's gland and prostate gland produce seminal fluid that provides a nutrient medium for sperms to swim in.
Scrotum: contains the testes outside the body.
FEMALES
Ovary: these are oval-shaped structures that produce female gametes and sex hormones.
Oviduct: these are hollow structures with an expanded funnel-shaped opening which accepts the released ovum and directs it to the fallopian tube. Fertilization takes place in the oviduct forming zygote.
Uterus: has an inner layer called endometrium which becomes folded and vascularised to allow implantation. The endometrium nourishes the embryo..
Cervix: is a muscular ring between the uterus and the vagina. It secretes a plug of mucus, which prevents entry of pathogens and air
The vagina is a muscular copulatory canal into which penis enters. Vagina also allows passage of foetus during parturition.
The correct answer is no replacement behavior.
Answer:
The energy form originated by electromagnetic waves or fields.
Answer:
The correct answer is option b. "streamlined bodies in dolphins and ichthyosaurs".
Explanation:
An homoplasy is defined as a trait that is shared between two different species but that they do not originate from a common ancestor. An example of homoplasy is the streamlined bodies in dolphins and ichthyosaurs. Ichthyosaurs were reptiles, not mammals like modern dolphins, therefore their similar streamlined bodies evolved separately.
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Answer: A</h2>
Explanation:
The magnifiacation doesn't change. We aren't seeing a more detail or less detail view of the cells. Thus this eliminates B & C.
There is no change in the turgidity of the cell or in the cell membrane. Thus this eliminates D.
However, B looks darker than. This is usually a sign that the cells have been stained. This was perhaps done with Methylene Blue.
