(Question)
Q: What do jellyfish lack in their nervous system? Choices: - stimulus - Response - Cortex - true brain A:
(Answer)
true brain

(Question)
Q: When cardiac muscle contracts, the heart does what? Choices: - cardiac arrest - irregular heartbeat - heart murmur - pumps blood A:
(Answer)
pumps blood

(Question)
Q: Teeth in the back of the mouth are used for what? Choices: - swallowing food - tearing food - cutting food - grinding food A:
(Answer)
grinding food