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Plants by Bozeman

Added Feb 01, 2016 •

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hi mr. Anderson in this podcast I'm going to talk about more prep we're going to talk about land plants and said they have a great diversity on our planet if it weren't some plans we literally would not be able to survive on her Planet so let's start with lucky bear phylogeny for hear all the eukaryotes on her Planet so basically these are all things that have a nucleus and they're going to have a organelle and if we break off of pretty ancient lineage another way to plan to been separated for a long time who are the things are more related to will red algae be one right next door we're going to green plants right I must have these are all going to be crowded so you can see us right here animals and then fungi right next to that it's a plants are important for the role they play in our lives Zoom born into their phylogeny itself there going to be some things that you're familiar with like mosses and maybe liverworts and hornworts for all fantasy all the way down here you have to learn all of these either simply the way that they're starting to be classified but there are four groups you should be familiar with that I'm chosen another going to be the bryophyte going to be like the fern the gymnosperms and then the angiosperms and the reason those for is that their monophyletic another word they share a common ancestry with each other so we know that they're related but they also show these four evolutionary steps in the movement of from water to characteristic so that we know that they have a nucleus and organelles and their also autotroph otherwise they're going to take energy from the Sun and they're going to use chlorophyll a to make sugars for themselves until they are self feeders they salons in that cell walls are going to be made up of cellulose which is a polysaccharide those going to have a lot of extra Bonds on there that make it really really durable are chemicals did I could have written his for a pollen and that they have this really resistant chemical that can also protect their spores on their terrestrial in other words plants what are we called land plants sometimes referred of those as embrya fight but they all live on land until things like seaweed aren't going to be technically plans and things like hell are going to be proud and so they're not plants as well until all these things on here live on land the only exception to that would be water lily which we think moved onto land and then move back into the water also alternated alternation of generation that's part of the reproductive structures show you that I'm the next slide but the big thing is where they actually get their name is that they all have protected embryos land plants and other was this could be a baby plant how to buy material around the outside until all plants are going to have one structure in their life when you have this little baby embryo fight in math what shared is Cher all planets in the generation of the term that you should understand especially when you're talking about playing and basically what it means is that there are two light cycles in plants we have the haploid life cycle remembered up going to be when you have one set of all the chromosomes and then the diploid now botanist of given specific name to these into the haploid portion call the gametophyte in the diploid portion we're going to call the sporophyte in humans looks like about that what are the different diploid and haploid parts life cycle of a diploid is going to be mean to all the cells in my body and then haploid portion is only going to be the gametes of the sex out but implant lots of times that you need I'll actually be a part of the plant multicellular part of the plant so let's look how this plays out in Fern so basically what you're going to have is meiosis which creates pores variability here but we also now reduce our chromosome number down to an or haploid so now we have my growth of the I'm not going to create the gametophyte portion that's going to be really small portion below as what you want might think of as a fern where they're going to have my fertilization that's going to create a sporophyte in that sporophyte is going to be the diploid portion of that cycle over and over again what you see in a moth is going to be comida site but every move out towards things like a conifer tree like a big tree what you're mostly looking at just like when you're looking at him going to be the sporophyte or the diploid portion for going to make energy through process Bernie Madoff sugar why are they doing that they're doing that so they can store The energy they can build structures out of it they can also use cellular respiration to release energy form of ATP in other words they are self-sufficient and we are simply parasite on plants and they mentioned before there for big groups can understand when it comes to plants and those are also going to show you the four major steps that plants with Drew to dominate our plan so basically we're deep in the ocean Brooklyn started at something similar to seaweed and so basically what they were able to do is move onto Land Rover the move material around they then came up with a feed meeting up with the flower for the movement of the first organisms on our planet the bryophytes which I like them author basically they're similar to what some of the first plants on our planet had their definitely green but they couldn't be very tall because in order to move water around it could only do true diffusion they didn't have vessels inside them they could move the water until these are generally really really short and they're also found in areas that is enough rain water on the bright side Joey get water that way next move is the vascular tissue show up and throw the bryophytes are going to be separated from the vascular a true tissue and so basically what they're going to have are these xylem and phloem that can move material around once we can move material specially water from route to our shoes and sizes got really really big didn't have to live only in really really wet areas and we didn't have to be really low to the ground and said next big jump was the fern next thing is the evolution of the seed seed allowed them to protect that embryo fights and it can dry out and then we can eventually conserve in plain sight as an example of a gymnosperm but they're all these conifers over here if we break down the word it's naked the that's going to be this group then finally we have what are called angiosperm not the evolution of the flower what's the function of a flower the flower gave him an ability to reproduce the basically what are these flowers doing their advertising to insects to come here the connector and then when you go there you going to pick up a little pollen you're going to move it somewhere else this is allowed them to be incredibly successful but even though you might not be able to see a flower every plant that are playing you can think I was going to be an angiosperm so let's think about grass well they're pollinated by the wind into the wind going to move their pollen until they how to have a very fancy flower because they're not an advertising for inside but again is the evolution of plant that's for big groups again are at the bryophyte preferring the gymnosperms example due to Conifer those were what we're around when the dinosaurs were around and then finally we have the angiosperm is it playing I love plan cuz I eat them or I eat things that eat plants and I hope that

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Plants by Bozeman

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