Campbell Essential Biology with Physiology (5th Edition)
5th Edition
ISBN: 9780321967671
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece, Kelly A. Hogan
Publisher: PEARSON
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Chapter 26, Problem 7SQ
Summary Introduction
Concept introduction:
The embryo is a prenatal form of humans, but it is formed after the zygote that is formed just after the fusion of the male and the female gametes. Its next stage (zygote) is the formation of an embryo that is a multicellular form. From this stage, there is the formation of the entire human organs.
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Students have asked these similar questions
Which germ layer is involved in the process of neurulation?
Select one:
a. Mesoderm
b. Endoderm
c. Embryonic disk
d. Ectoderm
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
Which cell contributes the necessary nutrition to the growing zygote?
a
a polar body
b
the egg cell
c
a spermatocyte
d
the sperm cell
Chapter 26 Solutions
Campbell Essential Biology with Physiology (5th Edition)
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which mechanism prevents an ovum from being fertilized by multiple sperm cells? A. Once a sperm penetrates the jelly-like coating of the egg, no other sperm cell can penetrate the coating. B. When a sperm fuses with the plasma membrane of the egg, depolarization of the membrane occurs. C. The egg can survive in the Fallopian tube for 24 hours s it does not have mitochondria to produce energy. D. When more than a single sperm cell fuses with the plasma membrane, multiple zygotes can form, leading to the twin or triplets.arrow_forwardHow does the production of sperm differ from the production of eggs? a. Sperm production involves meiosis, whereas egg production involves only mitosis. b. Meiosis during sperm production produces four sperm cells, whereas meiosis during egg production produces only one functional egg cell. c. Sperm are haploid, whereas eggs are diploid. d. Sperm production begins during fetal development, whereas the meiotic process that begins egg production doesn’t begin until pubertyarrow_forwardIs this true or false? a. Fertilization is followed by a cleavage, a period of rapid cell division without growth. b. From the process above, this results in the production of a large number of cells called blastomeres. c. In sexual reproduction, the offspring have the same combinations of genes as their parents. d. Sequential hermaphroditism occurs when an animal is one sex during one phase of its lifecycle and the opposite sex during another phasearrow_forward
- When does an embryo become a fetus? Select one: a. When gastrulation forms the three primary germ layers b. When neurulation forms the brain and the spinal cord c. As soon as the heart begins to beat d. When organ formation completesarrow_forwardAt which stage of embryogenesis, major patterns of the internal tissues of the embryo have been already established? A. Octant stage embryo B. Globular stage embryo O C. Heart-shaped stage embryo O D. Torpedo stage embryoarrow_forwardWhich of the following plays the greatest role in determining how cytoplasmic division occurs during cleavage? a. Number of chromosomes b. Amount of yolk c. Orientation of the vegetal pole d. Sex of the zygotearrow_forward
- The process by which the structure labeled B is released from the structure labeled A is known as? A. differentiation B. ovulation C. gastrulation D. germinationarrow_forwardWhich statement relating to frog gastrulation is INCORRECT? a. A second set of bottle cells migrates inward to create the ventral blastopore lip. b. Gastrulation begins in the gray crescent where bottle cells invaginate. c. Cells just below the DBL begin to invaginate. d. The yolk plug is not internalized and will become part of the ectoderm.arrow_forward3. When does differentiation begin? A. when the zygote forms B. when the zygote begins to divide C. when the embryo forms layers D. when the offspring is bornarrow_forward
- How many functional eggs (ova) result from one oogonium? A. 1 and 3 polar bodies B. 18 C. 4 D. 16arrow_forwardAfter the zygote undergoes several mitotic divisions, the resulting structure that implants in the endometrium is called Select one: a. zygote b. morula c. blastocyst d. embryonic discarrow_forwardWhat is NOT true about embryo development? A. a morula is an earlier stage than a gastrula B. Gatrulation creates endoderm and ectoderm in most animals C. Mammal blastulas are called blastocysts due to the thickened area where the embryo develops D. diploblastic animals have mesodermarrow_forward
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