Which of these characteristics first developed in reptiles?
A. skull and vertebral column
B. animals living completely on land
C. scales on skin
D. amniotic egg
E. four-legged body
Answer: D
Biology & Microbiology
You might also like to view...
The structure in the figure above represents a molecule of ____
a. pre-mRNA b. tRNA c. snRNA d. mRNA e. rRNA
Biology & Microbiology
Lack of vitamin ____ leads to rickets
a. a b. b c. c d. d e. e
Biology & Microbiology
Skeletal muscle contraction is stimulated by the neurotransmitter ______, which is released by nerves at the neuromuscular junction
a) acetylcholine b) nitric oxide c) dopamine d) glycine
Biology & Microbiology
Process in a cell that involves the passage of electrons along a series of membrane-bound electron carrier molecules from a higher to lower energy level; the energy released is used for the synthesis of ATP.
What will be an ideal response?
Biology & Microbiology