What adaptations are observed in trachea and lungs to reduce water loss?
A) A countercurrent exchange system reduces water loss in animals with either trachea or lungs.
B) The location of the trachea and lungs (inside of the body) reduces water loss.
C) Trachea and lungs secrete specialized oxygen-carrying chemicals to reduce water loss.
D) Limbs are used by animals with trachea or lungs to move water over these structures.
Answer: B
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A) Prokaryotic cells B) Secondary meristems C) Differentiated cells D) Stem cells
All of the following are mechanisms or adaptations of organisms to the arrival of colder
winter temperatures EXCEPT
a. hibernation. b. reduction in metabolic rates. c. migration. d. growth.
The nucleotide sequence in mRNA that carries the protein-building instructions is found in the ____
a. promoter b. nucleotide cap c. introns d. transcript e. exons
The base pairing between ________ is especially strong because it contains an additional ________ bond, compared to ________
a. A and T / ionic / C and G b. A and T / hydrogen / C and G c. C and G / ionic / A and T d. C and G / hydrogen / A and T