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Contact [7]
3 years ago
10

Indicate whether each description applies to a specific group of gymnosperms or to all gymnosperms. drag each item to the approp

riate bin. view available hint(s) resethelp all species produce cones pines undergo alternation of generations leaves have fanlike appearanceredwoodsonly one living species todayhave palmlike leavesseeds do not form in an enclosed structureincludes three genera that vary greatly in appearance cycads only ginkgos only gnetophytes only confires only

Biology
1 answer:
muminat3 years ago
3 0
As you can see in the table presented below, all of the gametophytes have seeds do not form in an enclosed structure and <span>undergo alternation of generations (marked in purple)
The gingkos were widespread in the distant past, but are now presented with only one species with fan-like leaves, the Gingko Biloba. (green)
The gnetophytes have three genera with very different looking species. One of the most iconic ones being the Welwitschia mirabilis often called the wise man's beard. (blue)
The conifers include redwoods, like sequoias and all, have pines as leaves and produce cones. (brown)</span>

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The reduced potential causes hundreds of <u>voltage-gated sodium</u> channels  to open on that part of the cell membrane. The depolarization of the cell causes more of <u>voltage-gated sodium </u>channels to open in adjacent parts of the cell membrane. This begins the wave of of <u>depolarization</u>  moving down the axon. Depolarization begins at the <u>axon hillock.</u>

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When there is no neuron signaling it becomes polarized, termed as resting membrane potential (RMP) at a threshold voltage (around -55 mV), due to the action of the sodium-potassium pump and the potassium leak channels.  

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