Which of the following species reproduces by internal fertilization?
a) cats
(b) Toads
(c) The fish
(d) alternative b and c
Answer:
(a) Los gatos
Explanation:
Only cats are capable of internal fertilization from the given choices above.
Internal fertilization is the fusion of gametes within an organism. This process occurs during sexual reproduction within the female.
- Toads and fishes exhibit external fertilization.
- External fertilization occurs where the male sperm externally fertilizes the eggs of the female.
- This usually takes place in a moist or wet place especially water bodies. The liquid medium will transport the sperm to the egg.
In cats, the female specie takes in reproductive cells from the male during coitus and it fertilizes the her eggs to produce a zygote.
It is regularly hard to separate the elements of the apprehensive and endocrine system since it is hard to separate between the anxious and endocrine systems since a few neurons emit hormones and some endocrine organs react to neural signs.
The endocrine system is not a piece of the nervous system, but rather it is as yet basic to correspondence all through the body. This system is made out of organs, which emit concoction ambassadors known as hormones.
<span>The menstrual cycle is the set of physiological phenomena, occurring most often periodically (approximately one month), which prepare the body of the woman for a possible fertilization.
The process signal of the end of one cycle and the beginning of a new one is menstruation which is explained by the release of the unfertilized ovule with the placenta precursor (which is a blood).
In the case of fertilization, the menstrual cycles are "paused", and "resumed" after the childbirth.</span>
On the lowest setting which is usually the red, 4x with the ocular lens on 10x, then go up from there