Why is cartilage important in sharks, rays, and skates?

A) it works as a respiratory structure
B) it circulates blood flow
C) it supports and gives structure
D) it helps with digestion


Ans: C) it supports and gives structure

Biology & Microbiology

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Potassium deficiency in plants occurs when plants grow on light, sandy soils and cannot obtain enough potassium ions. Such plants are deficient in: (check all that apply)

_____ an essential element. _____ a macronutrient. _____ a micronutrient. _____ a limiting factor.

Biology & Microbiology

One would expect the concentration of sugar in __________ to be greater than in

__________.

a. leaves; roots b. root; leaves c. flowers; leaves d. The concentration of sugar would be the same in all parts of the plant.

Biology & Microbiology

Which of the following female organisms do

NOT contain XX chromosomes?

a. humans b. fruit flies c. cows d. butterflies e. cats

Biology & Microbiology

Viruses always lack which of the following?

a. A plasma membrane b. Genetic material c. A protein coat d. Organelles

Biology & Microbiology