Explanation:
1. All of the following are periods of prenatal development except: a.germinal
b.embryonic
c.fetal
<u>d.postpartum</u>
Prenatal development describes the 40 week period before a child’s birth and the processes that occur during that time during prenatal development. Cells containing genetic material called chromosomes determine all physical characteristics of an organism including biological sex, height and eye color through expression of genes.
- The germinal stage describes the process from conception through implantation which is approximately two weeks, and begins when an egg is fertilized by sperm to form a zygote.
- The embryonic stage follows this until week eight of pregnancy; here the zygote divides into multiple cells in layers that determine systems like the nervous system; skeleton and respiratory system. The embryo travels through the fallopian tubes and implants itself in the lining of the uterus where blood vessels form the placenta.
- During the fetal stage spanning from week 9 until birth, differentiation, formation of sex organs internal organs and sensory perception occurs. The fetus also undergoes major brain development to form psychological and psychosocial traits. Immediately following the birth of the fetus is called the postnatal period
Learn more about embryonic development at brainly.com/question/6393374
Learn more about the prenatal period at brainly.com/question/4481556
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Mercury is a barren planet with little atmosphere. In many regards it is similar to our own moon. However, it is also very close to the Sun, so humans will have to set up bases in craters or near the Poles to avoid being blinded.
Answer:
Vegetative propagation is the process of multiplication in which a portion of fragment of plant body functions as propagate and develops into a new individual.
Explanation:
- Asexual or vegetative propagation of plant is that form of plant propagation in which the new individual arises from any vegetative part of the parent and possesses exactly the same characteristic of the parent plant.
- Vegetative propagation can be carried out through roots as in <em>Dalbergia sissoo</em> (Shisham) ; <em>Psidium guajava</em> (Guava) etc; through stems as in <em>Solanum tuberosum</em> (potato) ; through leaves as in<em> Bryophyllum</em>.
- Plants can be propagated artificially by following natural principle.
- Some artificial methods of vegetative propagation include, Cutting, grafting, budding etc.
Answer:
FALSE
Explanation:
Blood actually enters the right atrium first and finally exits thru left ventricle to the body.
To go to lungs, it must go from right atrium to right ventricle to the lungs.
