The Plants & The Bees: Plant Reproduction

The Plants & The Bees: Plant Reproduction - CrashCourse Biology #38

Рет қаралды 1,072,115

Күн бұрын

Hank gets into the dirty details about vascular plant reproduction: they use the basic alternation of generations developed by nonvascular plants 470 million years ago, but they've tricked it out so that it works a whole lot different compared to the way it did back in the Ordovician swamps where it got its start. Here's how the vascular plants (ferns, gymnosperms, and angiosperms) do it.
Table of Contents
1) Sporophyte Dominance 01:55
2) Ferns 02:14
3) Gymnosperms 03:35
4) Angiosperms 05:33
5) Truth or Fail: Fruit Edition! 08:28
References:
www.home.aone.net.au/~byzantiu...
hcs.osu.edu/hcs300/gymno.htm
www.msnucleus.org/membership/h...
faculty.unlv.edu/landau/gymnos...
• Angiosperm (flowering ...
extension.oregonstate.edu/mg/b...
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Пікірлер: 719

@raxmax1421 4 жыл бұрын

Organism: *Exists Hank: Now, *THAT* is awesome.

@garretiswright8532 4 жыл бұрын

xD xD xD truth

@SarahCat1001 11 жыл бұрын

My mom walks in: What are you doing. Me: I'm learning about plant reproduction. What else would I be doing.

@harry_page 5 жыл бұрын

Hank: _Thanks nectarine_ Producers: "Am I a joke to you?"

@ajimaji384 4 жыл бұрын

LOL

@krystalgomez2300 Жыл бұрын

10 years since its been here with us still one of the most amazing channels out there

@Glitzy786 4 жыл бұрын

"Basically we need vascular plants to have sex." I will never forget how sex is able to happen now...

@kassi4837 4 жыл бұрын

Meanwhile on The Star Wars series of the plant world: “ somewhere in an elephant a turd far far away...”

@sudhira5008 4 жыл бұрын

lol

@Kicatsjeeppups Жыл бұрын

out of all the education biology videos I watch for school and leisure, you by far are my favorite. You explain it in a way I can understand. Thank you!

@dantran9180 6 жыл бұрын

question: what kind of plant likes to work out? answer: the gymnosperms!!!

@strongpowerthankyou9298 6 жыл бұрын

"And these are perfect flowers! ...No pressure to other flowers, though." Do not succumb to the societal norms in the world of angiospermaphyta!

@wildeallykat7236 10 жыл бұрын

I am legitimately in love with this man.

@makemyday5521 10 жыл бұрын

Your his girlfriend? What?! Im confused!

@ayaamean4358 7 жыл бұрын

Girl, me too! But i wonder why he never replies tho.......

@humansonic6478 6 жыл бұрын

Good for you

@leo-hao 5 жыл бұрын

Hope fully his pollen will find your ovem...

@9dash 4 жыл бұрын

@@leo-hao uwu

@christaberry2694 7 жыл бұрын

My developmental biology professor when we started learning about plant reproduction: "Plants are blatantly sexy." (because their reproductive organs are out in the open where we can see them)

@ajimaji384 4 жыл бұрын

OOOOOOOOOO!!!!!

@Luke51015 7 жыл бұрын

the first part talking about haploid/diploid life cycle on plants could use more visuals

@nazinnazeri5434 5 жыл бұрын

this whole video could use more visuals

@omarabdelkadereldarir7458 5 жыл бұрын

A lot of things in crash course biology could use more visuals

@MusicSoulSound 4 жыл бұрын

then it won't be crash course. lol

@sfdgdrgdvxff 4 жыл бұрын

I didn't expect this audience to so eagerly want visuals to how plants make babies, you dirty pervs

@genas6703 4 жыл бұрын

Aster Perthro we all just want plant porn 😂

@Magiccircle100 11 жыл бұрын

man we need a crash course for math! You guys make learning interesting!

@like7oranges 7 жыл бұрын

if you watch the opening with the sound off its like you're on a date with him

@pseudoboss11 11 жыл бұрын

I don't think it's supposed to, but I know that when I was taking AP biology these videos saved my life, they're nice on their own, but really shine as a supplementary source.

@clarecornelius9068 8 жыл бұрын

YOU ARE BETTER THAN A TEACHER

@samuelrobertson6286 8 жыл бұрын

Clare please just chill out

@vibratingbee 7 жыл бұрын

Clare Cornelius How is she suppose to chill out when the ice caps are melting at an alarming rate?!! 😱😱

@leo-hao 5 жыл бұрын

Fish Pout just go pout over your melting ice caps, WERE NOT TALKING ABOUT THAT

@blmandar 4 жыл бұрын

What do you think he is ?? A kangaroo??

@elenapianovski6409 4 жыл бұрын

He is a teacher.

@iamtommyok 9 жыл бұрын

These are such well made videos

@MaessyChan 4 жыл бұрын

I never knew Strawberry wasn't a fruit!! And dear Hank! Don't you ever bite your tongue when you were talking? It's super fast that I don't know should I laugh or cry so I just do both! 😂 Love your video! Thanks! ♥️

@krystalgomez2300 Жыл бұрын

This channel is the treasure for brushing the basics to perfection

@roarfury 11 жыл бұрын

omg hank i am so grateful for your videos ur last 3 bio videos are EXACTLY what im covering in school right now and tbh the teacher isnt covering them in depth enough THANK YOUUUUUUUUUUUUUUU

@HeathercHolly 11 жыл бұрын

I love the double meaning of "we need plants to have sex"

@alexismurphy5387 10 жыл бұрын

Im in middle school and I understand this guy better than my teachers

@rileybenedict1804 6 жыл бұрын

Alexis Murphy cool

@leo-hao 5 жыл бұрын

Same here

@mustafafarooq1230 4 жыл бұрын

Me too

@Neurocyborg 8 жыл бұрын

Watched it while consuming huge watermelon. Feels good.

@ajimaji384 4 жыл бұрын

lol i wish i was eating a wodermelon!! BUT IT'S TO COLD!!!!!!!

@enaszaq3051 4 жыл бұрын

boi u lucky

@DanSullivanTV 11 жыл бұрын

This is one of my favorite pages for the reason i've learned more then I ever have from school in just a few episodes :D

@eromangadono 7 жыл бұрын

I'm trying to watch all your biology videos because I want to study for my SOL and actually it's being helpful! Thanks! For the free education!

@yourmillennialtherapist 8 жыл бұрын

'we need vascular plants to have sex'.. HAHAHAHHA i love you hank

@CeridwenPax 8 жыл бұрын

+Eunice Cheung But do we need vascular plants to themselves have sex, or do we need vascular plants so that humans can have sex? Such hilarious ambiguity.

@yathomaheads 11 жыл бұрын

"We need vascular plants to have sex." There are two ways to interpret that, and oddly enough, they are both entirely correct in and of themselves! :D

@tonklanattakit 5 жыл бұрын

Who is Watching For a Review Test Now

@dinosaursgorawrish 9 жыл бұрын

hank is my man crush

@dloquetepierdes 8 жыл бұрын

+Kafi Shabbir You are starting to freak me out... you have comments on every crash course video I've watched today and apparently also know a lot about hank. Jk... or am I?

@ildikoki 7 жыл бұрын

it's a joke man

@ayaamean4358 7 жыл бұрын

Same brw......... He so cute😚

@hizzini 11 жыл бұрын

Hey Hank, I love your science videos! I'm in Organic Chemistry right now and I'd love to have a set of your videos talking about chemistry (cause it's really hard and as a bio major I really don't get it). So, yeah, a suggestion for another series. Thanks! :D

@Nerdbraska 11 жыл бұрын

I AM TEACHING THIS TOMORROW. My students love your videos and this one happened just in time!

@pinkpixiechic 11 жыл бұрын

These videos make me feel like I'm back in school. Thank you Hank :)

@JakkIsBakkInBlakk 11 жыл бұрын

WHAT IN THE HELL YOU POST WHAT I LEARNED IN BIOLOGY CLASS EARLIER IN THE DAY EVERY FREAKIN' TIME.

@clarecornelius9068 8 жыл бұрын

SERIOUSLY IF I MET YOU I THINK IT WOULD MAKE MY LIFE

@b.odarfour583 7 жыл бұрын

chanced on this and wow you guys are good. The presenter is too good and the information given is great. Thank you

@mariahjaquez937 6 жыл бұрын

Love your videos!!! You be teaching me more than most of my teachers do!! lol

@cyrocya1 11 жыл бұрын

I just want to say thanks. between you guys and Bill Nye, I'm learning a bunch of stuff that I might actually use down the road

@fellowricky 11 жыл бұрын

thank you hank for all your time and effort. just wanted to let u know.

@NuYensTime 11 жыл бұрын

When will you guys be finished the curriculum for biology I'm only asking because i have biology next semester. By the way you guys are better at teaching than any and all teachers i have ever had. Keep up the good work.

@mathjb94 11 жыл бұрын

Hank sitting in front of me with a bouquet of wild flowers... it made me happy ^^ I just watched a video by Hayley GH where she tells us how to avoid having a too great crush on our professors by reminding our selves that they're married by writing little notes on our notebooks. I'll just write it down on a comment: Hank is married. :'(

@FaceofFrequency 11 жыл бұрын

Thanks, all these answer all questions I had (mostly which came first, and the altitude thing).

@Melthornal 11 жыл бұрын

I was eating an angiosperm literally the entire time I was watching this video. Nonstop.

@mitchumsport 11 жыл бұрын

hey this was pretty great! A little lecturey in the middle, but I liked the animations & game near the end. I wish you had covered whether or not corn and tomatoes are fruit :) Those and a few others are often mis-classified by those with a more culinary (as opposed to biological) orientation.

@uyenphan2353 Жыл бұрын

This video is really amazing, the way you explain about how the different plants reproduction is really detailed and easy to understand. You also give some real life examples and that’s interesting. This helped me alot in my Biology 2 class.

@SapphireSiren 11 жыл бұрын

That opening line was amazing. "Basically, we need plants to have sex." Lovely double pun, there.

@ceerinnn7102 5 жыл бұрын

Panic mode = Crash course = basic knowledge only

@ajimaji384 4 жыл бұрын

me:*sees a cors on plant replication* hope this is simpul Vido: goes thro all of this 1) Sporophyte Dominance 01:55 2) Ferns 02:14 3) Gymnosperms 03:35 4) Angiosperms 05:33 5) Truth or Fail: Fruit Edition! 08:28 Mind at end of vido:*sistum mal funkshon! sistum ere! sistum mal funkshon! me at end of vido: ummmm SISTUM MAL FUNKSHON!!!!

@matthewharck-turner275 10 жыл бұрын

Dont know about everyone else but these vidoes help a ton :D.. Keep up the great work guys

@nutcheck3 11 жыл бұрын

Boy, did I love pine cone wars in the boyscouts. Nothing makes your day like pelting your friend in the face with a pine cone then running like hell to your base as he built an army.

@alexutreras5877 9 ай бұрын

🎯 Key Takeaways for quick navigation: 00:00 🌱 Vascular plants use alternation of generations, with sporophyte (diploid) and gametophyte (haploid) stages. 01:57 🌿 Vascular plants are sporophyte dominant, and their gametophytes are small and hidden. 03:21 🌲 Gymnosperms, like conifers, produce seeds and evolved from plants with spores, introducing seed-based reproduction. 05:45 🌷 Angiosperms (flowering plants) have seeds and flowers, using animals for pollination and creating fruits to disperse seeds. 08:37 🍓 Fruits are crucial for angiosperms as they aid in seed dispersal, sometimes through consumption by animals. Made with HARPA AI

@DoctaBeetz 11 жыл бұрын

Never have I understood the phrase "fruit of my loins" more. Thanks Hank.

@coriwilde6634 8 жыл бұрын

I understand what technically defines a fruit. Although, in my opinion, I still say that a fruit is anything that can be a Starburst flavor lol :P

@leo-hao 5 жыл бұрын

(-_-“)

@ajimaji384 4 жыл бұрын

OMG same!!!!!! XD

@darbylane 10 жыл бұрын

So helpful thanks!!! I have my bio practical in an hour!!

@hewwothere3862 6 жыл бұрын

We need more people like you in our schools. And btw, Ik I'm late to watch the video.

@taladiv3415 6 жыл бұрын

Of the most enjoyable educational videos to watch :)

@baronbirdman4979 6 жыл бұрын

6 years later and still helping pass highschool, i might find my old accounts comments here saying thanks =

@clarecornelius9068 8 жыл бұрын

LITERALLY YOU HAVE A GIFT

@ruolbu 11 жыл бұрын

his delicious "hmmm" becomes so much better once I look at it in that light :D

@jenniferkubina149 6 жыл бұрын

Thank you, that was fun. Glad your nectarine was awesome.

@tommyisaboss 11 жыл бұрын

Hank should get his own tv show.

@akhilnatarajan9878 9 жыл бұрын

You guys are the best

@alchemistcoder9017 7 жыл бұрын

sahi kaha bhai Apne desh ki to halat kharab h

@lydiaaustin2204 10 жыл бұрын

Thank you! Your videos are great!

@bourgoisereader 7 жыл бұрын

A brilliant mix of a great biology teacher , Thurston Moore and the last Lex Luthor

@ginaweb08 11 жыл бұрын

I wish I found you 5 years ago haha, very helpful thank you!

@neilpatel3046 6 жыл бұрын

That helps me a lot because I am learning this in school so it is really helpful Thank You so much.

@clarecornelius9068 8 жыл бұрын

I AM A PROUD FANGIRL OF YOU HANK

@ryuuseicha 11 жыл бұрын

I always laugh when the "I'm a Mormon" ads come on before this show.

@qwrites7716 11 жыл бұрын

If by "more advanced" you mean "has been around longer," then needle trees probably have the market cornered. All needle trees are gymnosperms, which have been around longer than angiosperms, the classification containing most broadleaf plants. Gingko trees are one exception; they are deciduous broadleaf trees that are also gymnosperms. They're there to confuse you. However, there is an error in your question, which I will mention in my next reply because I'm out of characters.

@donnasaunders4220 9 жыл бұрын

LOL! You guys are funny and smart!

@nickhentz8243 7 жыл бұрын

Please make a video about various phyla of the plant kingdom. these videos are so helpful and i wish that as i progressed there were ones that became more specific with education

@Cadwaladr 11 жыл бұрын

The nectarine at the end made me think of the last time I ate a nectarine and the pit was split open and the seed inside looked exactly like an almond, and after doing a little research I found out that I wouldn't die if I ate the seed, so I ate it and it was kinda bitter, but had an intense almond flavour. Also a peach seed has stuff in it that when you eat it, it creates a few milligrams of cyanide, which is not enough to hurt you, just enough to make you feel like a badass.

@lauralgonzalez90 7 жыл бұрын

I wish y'all would have talked about angiosperm flower life cycle more in detail

@clarecornelius9068 8 жыл бұрын

YOU ARE LITERALLY AMAZING

@Teuwntjuh 11 жыл бұрын

Symbiosis is living together, to be divided into mutualism, commensalism and parasitism. Mutualism is a form of symbiosis where both organisms benefit from each other. (lychens, bees & flowers) Commensalism is a form of symbiosis where one organism benefits from one other, but doesn't harm the other organism. (bird nesting in trees) Parasitism is a form of symbiosis where one organism benefits at the expense of the other. (worms in colons)

@imymiimiii 11 жыл бұрын

Definitely now have the 'we're the exception' Mongol montage in my head.

@Sisyphus108 8 жыл бұрын

I am worshipping you the day before my test Hank!

@lisagomez4875 Жыл бұрын

Lisa Gomez - Biology 2 The video is about the vascular plant reproduction explaining that they use the basic alteration of generation developed by nonvascular plants, but they have tricked it out so it works a whole lot different compared to the way it did back where it got its starts. A plant can take two different forms that alternate back and forth between generations. The first form, the sporophyte and the second form, gametophyte. Non vascular plants are gametophyte dominant and vascular plants are sporophyte dominant.

@johndisco5280 11 жыл бұрын

again this make a lot more sense to me thanks

@kaiahaakonson3652 4 жыл бұрын

What came first... the gametophyte or the sporophyte?

@KendrixTermina 10 жыл бұрын

You'd think Yumminess would usually be a disadvantage, but if it gets us to throw appleseeds all over the landscape...

@paradoxialanswersish 11 жыл бұрын

Hi hank! We all love you!!!

@SkywalkerAni 11 жыл бұрын

Ah, well, I guess I'll just have to wait for the book and, as Robert Jordan would say, RAFO. Maybe have Nyneave heal the madness? And no problem- I've really been getting hyped for the new book.

@samuhin_12 Жыл бұрын

Samuel hincapie - biology 2 From what I saw of the video, I think that seedless vascular plants are distinguished from seed plants by their vascular organization and, of course, by the lack of seeds. They reproduce by spores in a similar way to bryophytes. The major event of vascular plants is undoubtedly the formation of the seed.

@docbrown3405 11 жыл бұрын

YO! Dat Nectarine is a DROUPE! A berry with a soft shell at maturity. The carpel hardens into a pit. Anyway! Love the show! This could have totally helped for my Botany midterm (like an idiot, I forgot to check for this D: ), keep up the good Plantae work! Nothin sexier than an angiosperm!

@Rainefaelyn 11 жыл бұрын

Now I want a nectarine. But I know I will never find one that tastes as good as Hanks sounded.

@sunriselg 10 жыл бұрын

Lol, how all English scientific terms are from Latin descent, in other languages, we have native words for them. In German the scientific term is "Nacktsamer" which literally is the German word for "naked seeder".

@ajimaji384 4 жыл бұрын

*spits water all over my computor* oh my god that's just- that's just funny with in it self

@enaszaq3051 4 жыл бұрын

must be fun

@settingthewheelinmotion4978 8 жыл бұрын

Enjoyed the video. Just one question: what happened to the ovaries of the strawberry seeds if they are not a fruit and their seeds are suspended on a stalk?

@AhmedAli-ql1op 6 жыл бұрын

the hard little things around are the fruit. &)

@CreepyIndian91 11 жыл бұрын

Where have you been all my life? I've never understood Biology until you appeared on my youtube page! Same goes for your brother in the history department :P:P

@ZRovas117 11 жыл бұрын

Hank will you ever do a Behind the Scenes where the camera ACTUALLY turns around and shows what you are usually looking at? I'm so curious as to what the studio looks like. Same goes for the Crash Course World History set.

@qwrites7716 11 жыл бұрын

If by "more advanced" you mean "better at life"...well, broadleaf trees and needle trees are equally well-adapted to the living situations they've made for themselves. Needle trees are more equipped to survive at high altitudes, but at lower altitudes, the broadleaf trees crowd them out, so neither is really "more advanced" than the other, they just are good at living in different places. (Another comment forthcoming as well, because I thought of a third aspect...)

@Nerdbraska 11 жыл бұрын

I'm a bit impressed at the turnover of my Green brother media-consumption habits in the past year. I've always been a science guy, but I'm also quite a reader. So before I actually started teaching, I watched John stuff and read his books and loved the way he talked about things and generally just had more to do with his media products. Now that I'm teaching, I use scishow & Crahcourse biology all the time, and I've gotten addicted to Lizzie Bennet diaries!

@joannaansah4957 Жыл бұрын

ANGIOSPERMS @4:48 mins. They have seeds AND flowers (mutualism between plant & insects)

@Kobi090 Жыл бұрын

Thank you for making this video

@simpleobservation9470 8 жыл бұрын

GREAT JOB

@jgcruzoficial5 Жыл бұрын

what caught my attention was his question and if I understood the question correctly, the advantage of sexual reproduction over asexual reproduction is that they can occur; that although it is less, robust can take advantage of the fact that the organism can mutate something that is useful in its environment, or against predators.

@clarecornelius9068 8 жыл бұрын

I ASPIRE TO BE YOU WHEN I GROW UP

@christianjimenez5915 5 жыл бұрын

Clare Cornelius chill he’s just a person

@jemmastefanou1607 8 жыл бұрын

there is also at least one non flying mammal that acts as a pollinator. i don't know its name but it lives in southwest australia where there are many many flowering plants (more than all of europe in a small-ish area), and this tiny possum has evolved to just live on nectar. Im guessing it is a major pollinator too. - michael (not jemma)

@vexrav 11 жыл бұрын

although this is a very good channel and i learn a ton i dont think this could really replace an ap course

@iamcoolstephen1234 11 жыл бұрын

This was fascinating and informative. Very good overview of the subject.

@Paul-oi2wz 5 жыл бұрын

03:21 The picture of the seed on the right side is misleading because the germination process starts with the root coming out first. I know it's a little note but still.