<p>What did you guys put for the cladogram one? like the one with thatt tree branching off with the different phylum? Where was the duestrome/prostome division. </p>
<p>angiosperms and gymnosperms both have seeds. the difference is between them being covered.</p>
<p>it is definitely exoskeleton. insects/crustaceans do not have external fertilization - that’s only frogs and such (amphibians)? or one or the other.</p>
So you agree that as PTH decreases Calcium level increases?</p>
<p>
To answer the second part of your question that because unlike humans plant shave the ability to produce vitamins themselves unlike humans which must take them in. That’s why some humans have to to take vitamin pills extracted from plants since they can produce it themselves.</p>
<p>As to answer the PTH question this was the first on in the set of PTH questions right? If so I remember putting B, not exactly sure what it was though sorry.</p>
<p>and what about the plant lab one. With the plant seeds growing in the dark? obviously that wasn’t photoperiodism (light). I thought it was either touch or gravity.</p>
<p>I had trouble with the one question with three graphs and how the third graph with the RNA inhibitor would affect the production of the RNA. I narrowed it down to either all production would stop or the levels of RNA would not increase. </p>
<p>Was anything touching the seeds? Yeah, no. It was obviously a gravitropism (a positive one, at that). The one growing around the stake was a thigmotropism.</p>
<p>@motivated, the answer was gravity because the plants were at the edge of the petri and they were growing downwards. the other answer choices like pH, temp, didn’t make sense.</p>
<p>wait, the first plant was gravitotropism?
darn, i thought it said it was in light, the edge was dark, so the plants were growing inwards (lol didn’t think of the soil…gah!)</p>