The migratory neural crest cells _____
A) form most of the central nervous system
B) form the spinal cord in the frog
C) form a variety of neural and non-neural structures
D) form the lining of the lungs and of the digestive tract
C
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How would you argue that meiosis is the basis for sexual reproduction in plants, even though the direct result is a spore rather than a gamete?
What will be an ideal response?
_____ are close interactions between species that have evolved over long periods of time. When these interactions enhance the reproduction and population growth of both species, they are called _____
A. Symbioses; mutualisms B. Mutualisms; symbioses C. Symbioses; antagonisms D. Antagonisms; symbioses E. Antagonisms; mutualisms F. Mutualisms; antagonisms
Why is it so necessary for cells to communicate with each other in a regulated way?
What will be an ideal response?
From which cellular component do cilia and flagella arise?
a. the chromosome b. the centriole c. the nucleus d. the Golgi complex