The gradual modification of anatomical structures during the period from concept

Question

The gradual modification of anatomical structures during the period from conception to maturity is A) development. B) differentiation. C) embryogenesis. D) capacitation. E) All of the answers are correct. Each of the following statements concerning development is true except A) embryonic development includes the events that occur in the first 2 months. B) fetal development occurs from the 9th week until birth. C) the first trimester is when the fetus looks distinctively human. D) postnatal development begins at birth. E) All of the answers arc true. ___ is the time spent growing within the uterus. A) Gastrulation B) Gestation C) Development D) Pregnancy E) Embryonization During amphimixis, A) sperm become capacitated. B) the ovum finishes meiosis II. C) the male and female pronuclear fuse. D) meiosis occurs. E) gametes are formed. The individual cells produced by cleavage are called A) embryos. B) blastomeres. C) blastocytes. D) blastocysts. E) zygotes.

Explanation / Answer

24. E. All of the above are correct.

Development is the development of various organs from the embryo

Differentiation is the process of pleuripotent stem cells becoming specialised cells

Embryogenesis is the process of the development of the fertilized zygote to an embryo

Capacitation is the functional maturation of the spermatozoa. (capacitation occurs before fertilization or conception. I dont think this is correct in the above situation.

25. E . All are true

26. B. Gestation

27. C. The male and female pronuclei fuse

28.B. Blastomeres

The different cells derived from cleavage are called blastomeres and form a compact mass called the morula.

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