The key evolutionary development seen for the first time in the sponges is that of
A. multicellularity.
B. major organ systems.
C. a complete digestive tract.
D. body symmetry.
Answer: A
Biology & Microbiology
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The area directly below the neritic zone is called:
a. abyssal plain. b. ocean basin. c. trench. d. continental margin. e. hadal zone.
Biology & Microbiology
Which trait is found within all human cultures?
a. Parasitism b. Infanticide c. Selfish herd d. Predation e. Eusociality
Biology & Microbiology
Evolution acts at the level of the
A. species. B. community. C. ecosystem. D. population.
Biology & Microbiology
Pattern of inheritance in which a trait is controlled by several allelic pairs.
What will be an ideal response?
Biology & Microbiology