객관식
In the context of evolution, what does the phrase 'unity and diversity of life' refer to?
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21. Evolution
Introduction to Evolution and Natural Selection
객관식
Which of the following is true of deuterostomes in the context of evolution and natural selection?
A
Deuterostomes include phyla such as Chordata and Echinodermata.
B
Deuterostomes are characterized by radial symmetry in adults.
C
Deuterostomes are primarily found in aquatic environments only.
D
Deuterostomes develop the mouth first from the blastopore.
검증된 단계별 안내1
Understand the definition of deuterostomes: Deuterostomes are a group of animals characterized by their embryonic development, where the anus forms before the mouth during the early stages of development.
Identify the phyla included in deuterostomes: The major phyla that are classified as deuterostomes include Chordata (which includes vertebrates) and Echinodermata (such as starfish and sea urchins).
Clarify the symmetry of deuterostomes: While many deuterostomes, like echinoderms, exhibit radial symmetry as adults, this is not a universal characteristic for all deuterostomes, as chordates typically exhibit bilateral symmetry.
Examine the habitat of deuterostomes: Deuterostomes are not restricted to aquatic environments; for example, many chordates, including mammals, are terrestrial.
Differentiate between deuterostomes and protostomes: In deuterostomes, the blastopore develops into the anus, not the mouth, which is a key distinction from protostomes, where the blastopore becomes the mouth.
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