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Q 1/25
Score 0
Which of the following organs is most likely to arise from the endoderm?
30
muscle skin
stomach
Q 2/25
Score 0
Which of the following types of cleavage can result in the formation of twins?
30
indeterminate
determinate
spiral
25 questions
Q.
Which of the following organs is most likely to arise from the endoderm?
1
30 sec
Q.
Which of the following types of cleavage can result in the formation of twins?
2
30 sec
Q.
Spina bifida is a birth defect designated by the incomplete closing of the spinal cord. The disorder occurs early in embryonic development and specifically affects the neural tube (which creates the brain and spinal cord). Which germ layer is most affected by spina bifida?
3
30 sec
Q.
Which of the following is not a characteristic of deuterostomes?
4
30 sec
Q.
Which of the following terms applies only to organisms with bilateral symmetry?
5
30 sec
Q.
Which term best explains the presence of a multitude of different types of cells in an organism?
6
30 sec
Q.
Some animals form a head. If a head develops, which side of the animal's body will the head always appear?
7
30 sec
Q.
Earthworms are known for possessing a nerve cord that runs along the lower portion of the animals' bodies. Which of the following terms is an appropriate name for this nerve cord?
8
30 sec
Q.
Which of the following is indicative of a closed circulatory system?
9
30 sec
Q.
Which of the following organisms is a protostome?
10
30 sec
Q.
An organism is born with osteogenesis imperfecta which causes bones to be brittle and prone to fracturing. Improper development of which germ layer may cause this genetic defect?
11
30 sec
Q.
An organism is discovered that contains 3 hearts. Instead of blood, the organism contains lymph that is pushed through a large centralized chamber. Which of the following is true of this organism?
12
30 sec
Q.
Which of the following organisms does not undergo cephalization?
13
30 sec
Q.
Place the following stages of development into the correct order starting with the earliest.
14
30 sec
Q.
Which type of animal symmetry is described as having one line of symmetry along a central plane?
15
30 sec
Q.
Which of the following types of animal symmetry does not result in true body tissues?
16
30 sec
Q.
Which of the following best represents the function of the gills in organisms?
17
30 sec
Q.
Which of the following is true of humans?
18
30 sec
Q.
Which of the following is not found in all chordate embryos?
19
30 sec
Q.
Which of the following organisms demonstrates radial symmetry?
20
30 sec
Q.
Which of the following organisms exhibits asymmetry?
21
30 sec
Q.
An organism is discovered that lives for about a year in length. It lays eggs that hatch after about 7 days of development. After 2 months as a larva, it undergoes metamorphosis to change into a form that resembles to adult form. Which is true of the reproduction of this organism?
22
30 sec
Q.
Which of the following body systems is most responsible for movement?
23
30 sec
Q.
Which of the following best aids in the internal organs in movement and support?
24
30 sec
Q.
Which stage of development is notable for the presence of an archenteron?
