Which of the following respiratory adaptations evolved independently in several groups of aquatic invertebrates?

A. Hemocyanin
B. Hemoglobin
C. Tracheal system
D. Gills
E. Book lungs


Answer: D

Biology & Microbiology

You might also like to view...

The growth ring of a tree is actually composed of

a. epidermis. b. parenchyma. c. phloem. d. xylem

Biology & Microbiology

In biological nitrogen-fixation, ____

a. ammonia is converted to nitrogen gas b. nitrogen gas is converted to ammonia c. ammonia is converted to nitrate d. amino acids are linked into proteins in ribosomes e. nitrate is converted to ammonia

Biology & Microbiology

A spontaneous reaction releases energy. This type of reaction is ________

Fill in the blank with correct word.

Biology & Microbiology

The mechanism of action of RhoGAM is to (activate/neutralize/prevent) an anti-Rh immune response

What will be an ideal response?

Biology & Microbiology