Examlex
Chordates and echinoderms are both protostomes.
Biological Sciences
A branch of science concerned with the study of life and living organisms.
Social Sciences
Academic disciplines that examine society and human behaviors, including fields such as psychology, sociology, anthropology, and economics.
Cladogenesis
Speciation through a branching mechanism whereby an ancestral population gives rise to two or more descendant populations.
Gene Pool
All the genetic variants possessed by members of a population.
Q2: Viruses that attack prokaryotes are called<br>A) viroids.<br>B)
Q12: What is the advantage of paired appendages?<br>A)
Q15: Why do amphibians need to live in
Q16: The succession shown in the illustration is<br>A)
Q24: Kuru is caused by one of the
Q53: A toad that eats a bee and
Q61: Oysters are classified in the phylum<br>A) Echinodermata.<br>B)
Q68: Which of the following best fits into
Q73: Legumes obtain a useful form of _
Q107: The skeletons of rays and skates are