You are dissecting a fish in your biology laboratory section. your teaching assistant points out a long oval structure and tells you it is an endocrine gland. which of the following would you then know is a true statement about this structure?

a) it secretes a product that is released through a series of ducts.
b) the gland's product will only interact with receptors on the cell membrane.
c) the gland's product is lipid soluble.
d) the gland produces and secretes its product into the blood.

metamorphism is the change of minerals or geologic texture (distinct arrangement of minerals) in pre-existing rocks (protoliths), without the protolith melting into liquid magma (a solid-state change). the change occurs primarily due to heat, pressure, and the introduction of chemically active fluids. i hoped i !

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands

i think the answer is b.