Question

Organ systems often reflect adaptations to an animal’s particular lifestyle or environment. Which of the following INCORRECTLY describes such an adaptation?

A. Living underwater means fish don’t need high pressure to circulate blood, so they use single circulation.

B. Insects require high hemoglobin levels in their hemolymph to oxygenate tissue and stay mobile.

C. Herbivorous mammals house a community of bacteria in a large cecum to digest cellulose.

D. Frogs have external fertilization, which limits their reproduction to aquatic environments.

Answer 1

Option A and B are not correct.

Option A) Living underwater means fish don’t need high pressure to circulate blood, so they use single circulation is incorrect. Fishes have low blood pressure due to high resistance areas inside body during blood circulation not due to single circulation.

Option B) Insects require high hemoglobin levels in their hemolymph to oxygenate tissue and stay mobile is incorrect. Insect blood also known as haemolymp lacks RBC and haemoglobin. They respire through the air tubes in trachea. Instead of haemoglobin, haemolymp posses of haemicyanin that bind to oxygen.

Option C and D are absolutely correct.

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