a) What sort of mechanical test was conducted to produce graph "A" below? Briefly (one to two sentences) explain what is done to the specimen and what is measured during such a test.

b) What sort of mechanical test was conducted to produce graph "B" below? Briefly explain what is done to the specimen and what is measured during such a test.

c) Are graphs "a" and "b" made for the same tissue? How do you know?

d) If a seaweed has a stipe ("stem") made of material "a", explain what will happen to the stipe if it is subjected to a tidal current that pulls on the plant for about six hours.

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log E (t) (MN. m) log D(t) (MN. m) 0.5 s 0.59 1 min B 1 min 1hr log time (A) (seconds) Ihr Ica +ime (s) 24 hrs 24 hrs Jimenth It just keeps going with no change in E(-E). with 1 It just keeps going the soumhe slope. 1 month