A young girl walking along the beach discovers a sea sponge washed up on the shore. She pokes it with her finger, and the animal contracts locally in response. Because the sea sponge reacted to her poke, the girl concludes that this animal has a brain. Is this conclusion correct?

A) Yes, if an animal responds to any type of touch or sensory signal, the animal must have a brain where such a signal is processed.
B) Yes, sea sponges are known to have brains; however, these structures are relatively simple compared to the brains of vertebrates.
C) No, sea sponges possess paired ganglia that process their responses to touch or environmental changes (much like flatworms).
D) No, sea sponges actually lack any type of nervous system—the reaction the girl observed is the result of a local population of touch-sensitive (non-neuronal) cells.
E) None of the answer options is correct.

Zoe decided to measure the hand length of each of her classmates. first she marked a line across each student's wrist and lined up a ruler from this mark to the top of the middle finger to measure the length. then she recorded the measurements in the table below. marla did this the same way for each classmate, and then zoe used this ruler to measure each straight line and record the data below. this data is invalid. what is the most likely reason why it is invalid? the ruler is marked in centimeters, but zoe recorded data in inches. the range of lengths is too wide, so zoe must have misread the ruler. marla’s complicated measuring procedure was overly confusing. marla could have been inconsistent while drawing outlines of fingers.

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

Briefly describe the scenario that was discussed in the behaving brain that demonstrated that the brain can change based on state or mood. which disease could the research involving rats and learning experiments that was discussed in the behaving brain ultimately with? in the behaving brain, what is a common misunderstanding about amnesia that was mentioned? what is the truth about amnesia that's mentioned? what does research discussed in the responsive brain show to be different in men and women's reaction to touch? what was discussed in the responsive brain as being brain-based and a vital part of normal growth and development in young children? in the responsive brain, what do they discuss as a possibility for leading to deficiencies in cognitive impairment as we age? in the responsive brain, what did the research involving african cichlid fish demonstrate? briefly describe the back story and affliction of the author of peter pan. what did you find most interesting about the behaving brain video, and why? what did you find most interesting about the responsive brain video, and w