(1 pt) which of the following is a difference in nervous systems between a hydra and a flatworm? a. one responds to stimuli in the environment and the other does not. b. one has nerve cells with axons and the other does not. c. one is a loose network of connected neurons without centers of integration, and one has ganglia in which integration can occur. d. one has a brain with a forebrain, a midbrain, and a hindbrain, and the other has ganglia in which integration can occur.

One has a brain with a forebrain, a midbrain, and a hindbrain, and the other has ganglia in which integration can occur.

Explanation:

the right answer is a. skin cells forming from sunlight.

the liver is an organ endowed with a fantastic ability to regenerate

. thus, if a hepatectomy (ablation) of 70% of the hepatic mass is performed in the rat, there is complete recovery in 7 to 10 days.

prokaryotes are beings that have existed since the existence of life on earth, and do not come from another realm.

ribosomes are organelles that exist naturally in eukaryotes, either in free form or attached to the endoplasmic reticulum.

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