Why don't reptilian embryos dry out in a desert habitat?
A) Reptiles produce lots of defensive slime.
B) Reptiles are endothermic.
C) Reptiles produce shelled amniotic eggs.
D) Reptile eggs are protected by a jelly-like coating.
E) The placenta facilitates gas exchange between the mother and the embryo.
C
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Obligate anaerobes can often use ________ electropositive redox couples than facultative anaerobes, and ________ metabolism is most common in this group as well
A) lower / assimilative B) lower / dissimilative C) higher / assimilative D) higher / dissimilative
What is the apical meristem?
a. mitotically active tip of the root or shoot b. midvein of a leaf through which wastes and nutrients circulate c. mitotically inactive base of the root d. fibrous bract that protects the outside of a bud before flowering
____ is the study of body plans and structures
among groups of organisms. a. Embryology b. Molecular archeology c. Evolution d. Comparative morphology e. Composition
They possess both, DNA and RNA in their structure:
A. prions B. viruses C. prokaryotes D. both prokaryotes and eukaryotes E. both viruses and eukaryotes