b. Capillaries have thin walls and narrow diameters so that blood cells come close to the thin walls, across which gases can diffuse to surrounding tissue.
c. Capillaries have valves along their walls that allow blood cells to move through them to surrounding tissue, where gas exchange can occur.
d. Capillaries regulate the pressure of blood within them so that a steady stream of gas-infused blood cells passes into the surrounding tissue.
Answer:
THE "B" ANSWER IS WRONG...I JUST TOOK THE TEST
Explanation:
Answer:
The correct answer is: Mucus membrane.
Explanation:
fishes.
A. True
B. False
Yes, brain is involved in the lineages before the evolution of fishes
A. True ✓
The statement is true. The evolution of the brain predates the evolution of fishes.
The statement that the brain evolved in the lineages before the evolution of fishes is true.
The evolution of the brain can be traced back to earlier lineages, such as invertebrates like worms and insects. These organisms had simple nervous systems that gradually evolved into more complex structures. As vertebrates evolved, the brain became more sophisticated, with different regions responsible for various functions.
Fishes, being vertebrates, have brains that are more advanced compared to invertebrates. However, they are not the first organisms to have evolved brains. The evolution of the brain predates the evolution of fishes.
Learn more about evolution of the brain in relation to fishes here:
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b. Vascular tissue
c. Leaves
d. Stems
it is the leaves that fall of the tree's, bushes, and anything that has a leaf on it