Which of the following correctly identifies the different phases of human development? Select one: a. Weeks 1 to 8 are called the fetal development, and weeks 9 to 39 are called the embryonic development. b. Weeks 1 to 8 are called the embryonic development, and weeks 9 to 39 are called the fetal development. c. The 1st trimester is fertilization and mitosis, and the 2nd and 3rd trimesters involve differentiation. d. The 1st trimester is called the embryonic development, the 2nd trimester is called the fetal development, and the 3rd trimester is when the baby grows to gain more weight.

Which of the following correctly identifies the different phases of human development? Select one: a. Weeks 1 to 8 are called the fetal development, and weeks 9 to 39 are called the embryonic development. b. Weeks 1 to 8 are called the embryonic development, and weeks 9 to 39 are called the fetal development. c. The 1st trimester is fertilization and mitosis, and the 2nd and 3rd trimesters involve differentiation. d. The 1st trimester is called the embryonic development, the 2nd trimester is called the fetal development, and the 3rd trimester is when the baby grows to gain more weight.

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter38: Reproduction And Development

Section: Chapter Questions

Problem 10SA: Put these human developmental events in order, from earliest to latest a. blastocyst forms d....

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Which of the following correctly identifies the different phases of human development? Select one: A. The 1st trimester is fertilization and mitosis, and 2nd and 3rd trimesters involve differentiation. B. Week 1 to 8 are called fetal development, and weeks 9 to 39 are called embryonic development. C. The 1st trimester is called embryonic development, the 2nd trimester is called fetal development, and the 3rd trimester is when the baby grows to gain more weight. D. Week 1 to 8 are called embryonic development, and weeks 9 to 39 are called fetal development.
Which of the following statements is incorrect?a. The placenta secretes hormones such as progesterone, hCG, and estrogen.b. Embryonic tissue and maternal tissue forms the placenta.c. The chorion supplies nutrients to the embryo by diffusion.d. The umbilical cord is formed by one artery and two veins
Which of the following is false? a. The endoderm, mesoderm, ectoderm are germ layers. b. The trophoblast is a germ layer. c. The inner cell mass is a source of embryonic stem cells. d. The blastula is often a hollow ball of cells.
Which of the following statements is/are true? A. Spermatogenesis is an example of asymmetric cell division. B. The formation of a mature egg occurs through symmetric cell division. C. Spermatogenesis and oogenesis are both examples of asymmetric cell division. D. Spermatogenesis involves only symmetric cell division whereas oogenesis involves asymmetric cell division.
People could observe the development of an embryo before they had the tools to see cells and parts of cells such as DNA. How they explained the development from embryo to organism and how would the discovery of DNA and how DNA "works" have changed how scientists could research development?
At which embryonic event would one be able to first distinguish whether an embryo is diploblastic or triploblastic? A)cleavage B)metamorphosis C)fertilization D)gastrulation E)organogenesis
The beginning of brain and spinal cord formation is termeda. cephalocaudal folding.b. organogenesis.c. neurulation.d. gastrulation.
During embryonic development, unique cell layers develop into specific groups of tissues or organs during a stage called ________. a. the blastula stage b. the germ layer stage c. the gastrula stage d. the organogenesis stage
The process forming the neural tube and plate via the intercalation of cells along the medial-lateral axis and extension along the anterior-posterior axis occurs is called? a. neurulation b. embryogenesis c. convergent extension d. morphogenesis
Into which structures do the trophoblast cells of the developing embryo, differentiate? a) The developing foetus b) The yolk sac c) The placenta d) The blood vessels e) All of the above
The Embryonic stem cells can be derived from _______ which is developed by “invitro fertilization”.a) late embryo b) early embryo c) embryo d) zygote
Which of the following statements regarding the formation of human twins is INCORRECT? a. Nearly all identical twins form before the 9th day following fertilization. b. Identical twins share an umbilical cord. c. Fraternal twins form after two eggs become fertilized. d. Identical twins form after two eggs become fertilized.