Which of the following is characteristic of the circulatory system of arthropods?

A) lack of a heart
B) lack of blood
C) lack of blood vessels
D) lack of distinction between blood and interstitial fluid


Answer: D

Biology & Microbiology

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Explain what causes the growth ridges found on the shells of bivalves.

What will be an ideal response?

Biology & Microbiology

Which biome is characterized by plants whose leaves turn color and drop off in the autumn?

a. coniferous forest b. tundra c. temperate deciduous forest d. tropical rain forest e. chaparral

Biology & Microbiology

The great adaptive radiation of hominoids in

the Miocene is attributable to a. the proliferation of complex forests. b. an extended cooling and drying trend. c. the advent of bipedalism. d. the evolution of a large brain. e. changes in tooth structure

Biology & Microbiology

The olfactory epithelium is located in the roof of the mouth

____________________ Indicate whether the statement is true or false.

Biology & Microbiology