Taxonomy: Life's Filing System - Crash Course Biology #19

Hank tells us the background story and explains the importance of the science of classifying living things, also known as taxonomy.
References:
anthro.palomar.edu/animal/tabl...
www.strangescience.net/linn.htm
www.newyorker.com/reporting/20...
linnaeus.c18.net/Doc/lbio.php
faculty.fmcc.suny.edu/mcdarby/...
hyperphysics.phy-astr.gsu.edu/...
tolweb.org/Eukaryotes/3
www.livescience.com/4593-great...
faculty.ccbcmd.edu/courses/bio...
Table of Contents
1) Taxonomy 0:00
2) Phylogenetic Tree 1:24
3) Biolography 2:26
4) Analogous/Homoplasic Traits 3:48
5) Homologous Traits 4:03
6) Taxa & Binomial Nomenclature 4:56
7) Domains 5:48
a) Bateria 6:04
b) Archaea 6:44
c) Eukarya / 4 Kingdoms 6:54
-Plantae 7:56
-Protista 8:23
-Fungi 8:56
-Animalia 9:31
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[@c.m.880]

Dear Hank, Thank you for teaching my AP Bio class because you do one hell of a lot better job than my teacher

[@trentonhughes2486]

Ha same in my class

[@FireflyOnYoutube]

Catherine Miner Same here, I'm CP Bio though, but the teacher is completely stupid person who (like she said to us) confuses herself when teaching the subject so the class is irrationally hard.

[@armoda1057]

Catherine Miner read the textbook

[@lilyellis2761]

+Lord Raptor yes because everyone can understand everything in the textbook with no help

[@alejandroalonso3609]

+Lord Raptor >using a textbook Get gud

[@vladimirjosh6575]

*_"God created, Linneaus organsized"_* Nailed it, Carl!

[@verenizetrujillo6168]

I would just like to take a moment to thank Hank and the rest of the CrashCourse team for helping me pass my classes this semester. I couldn't have done it without y'all.

[@samanthakerryy]

My teacher gave me the best way of remembering the classification hierarchy; Kinky (Kingdom) Pants (phylum) Come (class) Off (order) For (family) Good (genus) Sex (species) ... Enjoy

[@elibraverman9458]

this is amazing

[@janderson947]

well at least i can remember.....

[@rudders7240]

except you need domain now out the front, so maybe dirty lol

[@cutoororoo685]

Sam Harris this is going down to all generations of my family... XD

[@ajesusencounter8261]

Lol we used: King Phillip Came Over For Grape Soda 😅

[@mykadassano438]

"Cross stitched onto a pillow for you to sleep on..." is one of the cutest voices I've ever heard come out of Hank.

[@feistymikaelson]

I agree

[@lori9885]

All around are biology students, cramming info cramming infooo Gotta cry I have to hide my sorrow testing tomorrow, testing tomorrow....

[@Fadiyra2319]

Even Historical geology students

[@jasonboyle4523]

How did your test go?

[@Takanayagi88]

"Gotta organize'em all!" - Linneaus

[@deeyakaur]

+Diego Leal I think "Gotta sort'em all!" sounds better...

[@voltron-eb6sx]

Diego Leal I wanna be, the very best, sorter there ever was!

[@jackassraptormongoloidensi2907]

The science of Pokemon Classification nice Pokemon reference btw

[@sciencecompliance235]

He wanted to be the very best, like no one ever was.

[@snehaa408]

@@deeyakaur impressive!

[@blooms454]

"Wait for it...the Sponge!" Do I detect some parallelism between the Sponge and the Mongols?

[@zacjones8895]

Omg, yassss

[@leo-hao]

I can’t wait for the “we are the exeption” sponge poster and t shirt

[@vascosilva9790]

I detect but you know who doesnot what for it the sea mongols Wait its the sea people

[@eyebags2860]

Thanks hank you saved me from failing my science class and from my asian mother's slipper of fire 👍uwu👍

[@darkkreeture8499]

I like how this channel never does clickbait

[@moosegoose1282]

Who else watching this for a test coming up?

[@j20py56]

meeeeee. Freshman Bio

[@defeatedwyvern]

Me. Field plant taxonomy.

[@voyevodaa]

TrollBronze lol yep.

[@hhhhaaaaxxxxx]

Me :P

[@counterintuitivepanda4555]

Holy crap yeah!

[@Agvarst0517]

Hahaha I find it funny that everyone here was talking about how they were a bio student cramming for exams. I am a Vet Tec student whose professor put this link in our homework assignment. Hope you guys did will on your exams.

[@CB-sk1pq]

"I know, let's pick this kitty!" *claps and gasps in delight*

[@johannanichols5853]

ʎʇʇəq ıɐɔ I have three cats of my own and I had the same reaction

[@Zer0_Flowers]

ʎʇʇəq ıɐɔ I was thinking the same thing

[@nathanmuir9118]

Omg he's so young. He's even getting caught up on words so cute

[@sowgingchen2139]

What a great time to be a student....

[@johnpayne7748]

I'm willing to bet that 80% of the people watching this video have to fill out a sheet for science

[@VioletIsBulletproof]

+John Payne yup!!!!lol. Thats what i did. but as an artist, it inspired me for a series of art pieces i would love to create....it involves the kindgoms....muahaha.....

[@samuelheavener261]

Well, I don't have to fill out a sheet, but I do have to take notes on it.

[@burdy2959]

i don't i just went on a animal adventure on wiki and got confused

[@josehernandez-pu1qv]

John Payne yes!! omg

[@nataliedecher5657]

Do you mean like for homework?

[@gultair]

Wait for it. You said that, and I immediately thought of "Unless you're the Mongols" CrashCourse. I love your programs. I really like these because they don't drop the specific information for the sake of being entertaining, and yet still can add in fun bits every once in a while. I enjoy learning this way, thank you for helping me become a better scholar.

[@1Dhpfan]

This is how I chose to study for my biology test :)

[@shanewilliams7627]

+T Mahany takes one to know one ;)

[@sarayusriramoju8998]

SAMEEEE

[@arnazahmed2372]

How'd it go??

[@4everlove403]

Biology Test tomorrow. anyone?

[@marilynhellmuth3461]

You teach me more than my teacher can in a month

[@johnoneill7443]

Marilyn Hellmuth Menu

[@johnoneill7443]

Ll

[@shamikh5301]

Pretty much the reason why we all are here lmao

[@alfiazizzat5127]

me

[@juliaracine5799]

Thank You Hank for acknowledging the constant change in our understanding of the world. It amazes me that even just 5 years after this video went up, the taxonomic system has changed so much that my college Biology of Organisms course has to teach an entirely new classification. Science has made a victory in the description of Supergroups and the integration of the meltingpot that was kingdom Protista into groups which better fit their traits and evolution (just as you hinted might be a good idea).

[@1philpot]

Reading Bill Bryson’a a short history of nearly everything. Had to pull out my microbiology with taxonomy textbook. Thank you for your detailed presentations they are helping immensely with understanding this tip of the iceberg.

[@seanbrown532]

I think what you meant to say was, "Wait for it- the Mongols."

[@nyarlathoteddy1458]

Start the Mongoltage!

[@destinyallen4509]

I have the APBIO Exam tomorrow so thanks for posting all of these videos, including this one because it's so much to memorize.

[@koushitagouri8241]

Hi, i love crash course, been using it since 3rd grade and now in 7th and still using it. This is my first year in a middle school where we do mid-terms and crash course has helped me prepare for history, physics, biology, and chemistry. So thank you so much for the videos and plz make one for the 4 macromolecules of life, and 6 characteristics of life. THANK YOU.

[@abigailcrawford3346]

I love using your crash course videos for studying. They are interesting and full of important details for review and overviews. Keep up the good work. PS. Your brother does a great job with the history videos. You two are great.

[@tmcosby]

"Unless you're a sponge" is the new "except for the Mongols"

[@hallowacko]

Dear Hank, Can we get a Crash Course Biology II? Best Wishes! John Newman

[@indigenousculturalconserva1577]

I was on the edge of my seat, felt a bit like he was mocking my excitement for evolutionary biology. :-)

[@MacroAggressor]

"Thank you for watching our taxidermy...." OH MY GOD!!! What did he do to the cat!?!

[@Moranivigom]

* * i contra

[@gracevicious]

I watch these videos before I go to my bio class and I always end up laughing out loud in a hallway surrounded by other students. Thanks Hank.

[@ArtsyChick24]

I'm willing to bet that a good chunk of the people watching this right now are IB Biology students who are getting desperate (like me)...

[@spacedoughnuts]

+EyeOfTheLauren AP but yes i am crammingggggggg yikes

[@801Hellfire]

nah just baked

[@stefiandrade5554]

Omg yes I have my final tomorrow

[@beepboop3931]

I'm a child

[@khaledkhraiba3696]

srsly how was it? :p i am a senior too

[@tatianakneale5542]

Can i just say thank you so much. I started this freshman year with a D on my first bio test and last year I had had straight As so i freaked out, but since then I've worked my way up to an A again, and I think I owe a lot of it to your videos. You make my least favourite subject far more interesting than i find it at school and I'm extremely grateful for that :)))))))))) THANK YOUUUU!!!!!!

[@ha.jar_a_]

Hank: let’s pick this kitty ME: yeesssss

[@counterintuitivepanda4555]

I have a test coming up and I didn't want to revise from my book so I came here.

[@Chloe-zh4ji]

Same

[@jesserogers6189]

+Chloe Seljak jesi seljak

[@johnsonshad4093]

your videos are worth watching... Thanks for sharing your knowledge with all the biology lovers and learners. Made 3 page notes of it :) :)

[@kevinhall2839]

Hank, great video as always. One question: you seemed to make a point of mentioning more than once that protists are unicellular, yet I was under the impression that protists (being the grey area they are as you mentioned) include all eukaryotes that are considered neither Animalia, Plantae, nor Fungi. I was also under the impression that some of these Protista are indeed multicellular. Kevin

[@tabbylucys]

Hank! So I used to watch all crash course videos, but then I only watched the history ones - and the I saw you talking to John and saying that biology got lots less views than history so I started watching biology again and I'm so glad! There so wonderful ANSI rally Lerner a lot. Thank you so much for making such wonderful content xxx

[@ParanoiaQueen1812]

Thank you so much for making these! They have helped me so much with my bio class!

[@mayapuppyy]

That was a great video!! I wish you were my teacher or my daughters teacher. You make it fun and keep us interested throughout. Thank you Hank

[@LaBam85]

you are fantastic Hank, don't ever stop teaching

[@Oogbae]

Exam in 3 and half hours... Oh dear lord..

[@123cheezecakehd]

Yeah dude im fucked lol

[@Oogbae]

Ayy, it wasn't too bad.. Maybe.. hopefully.. Oh my :(

[@123cheezecakehd]

i feel it was a pretty merciful paper

[@123cheezecakehd]

results back on 18th

[@Oogbae]

I feel sick. hahaha

[@darkyboode3239]

I’m someone who is quite fascinated in taxonomy. I didn’t study biology in school, but naming and classifying organisms is fun.

[@cactusbabe6947]

I enjoy your videos so much. I watch them just to learn and since they actually make me laugh they are an instant go to. Thank you!

[@GleeVampDiaries212]

Watching this at 1:30 AM on the morning of my biology midterm. Thanks Hank!

[@pikacrafter2903]

I feel like such a nerd since I'm not watching this for an actual class (even though I'm taking Biology this year, I am a Freshman and not in anything advanced unless you count Honors), and I'm watching it for fun.

[@kristinale885]

PikaCrafter cool story

[@natashanajam3499]

fun.

[@richard200923322]

Me too!!

[@megmalkemes1291]

Thank you for making my science class so much easier to understand!

[@fadi5631]

this man takes biology ,chemistry and psychology together ! hats off to ya !

[@123imchina]

I love this so much, this part of the course never sunk in and I never understood it properly.... THANK YOU!

[@Avohaj]

one of the most mind blowing things that taxonomy taught me is that while the relation between dogs and seals doesn't seem too far fetched (especially looking at the skeletons) that they're both also relatively closely related to bears was a shocker to me

[@burnttoastdani2364]

i am home schooled and me and my mom love your classes without you i would not know how my body works :p

[@hdr3393]

Hey Glitch Master get prepared for the topics by giving the answers of the questions by Edu tain p. Search for Edu tain p. I think it will be beneficial for you. Best of luck for your bright future 👍 👍

[@reecehayden7731]

Any last minute AS crammers like myself?

[@jamesmerchant5527]

AS exam tomorrow

[@reecehayden7731]

+James Merchant Best of luck

[@AngelO-bc6ql]

Right here

[@MISSsunshine0819]

Tryna learn the whole biology spec in one day

[@reecehayden7731]

+migle Just hoping theres more like you so they can put the grade boundaries down lol

[@imperfects6766]

I learned a lot more than my teacher from this video. This channel is such a life saver!

[@arsonistica545]

Thanks for this

[@wanderinglana8292]

Randomly came here because I'm studying to clep biology and OH MY GOSH It's Hank Green! Instantly 1,000x more interested in this because it's Hank.

[@cameornlisajane]

A really great video - learning A level biology at home - on the computer, so this is really helpful. thank you.

[@shiminshamim8359]

Hank, you are so much more better than my science teacher. Thanks for helping me with my revision for my GCSE exam... :)

[@samabizzle]

I LEARNED THINGS.

[@CallMeNequey]

I know right so did i

[@FROPDESAI]

***** Nequey

[@nikitageissler2897]

Sam I was on Snapchat half the time

[@leo-hao]

SO DID ME AND EVERYONE ELSE AND BY THE WAY NO NEED TO SHOUT!!!!!!!!!!!!!!

[@mahounekoshoujo4]

Biology final, anyone?

[@kateabiri4983]

that's why im here.

[@mahounekoshoujo4]

+KT Katana Good luck. :)

[@kateabiri4983]

+timyrica sherrod thx

[@kateabiri4983]

97% Yay!!

[@zaimahbegum-diamond1660]

yip in a week

[@bidishamukherjee3936]

my favorite chapter in bio is taxonomy and hank did a great job here..... MY BEST AND FAVORITE MOST VIDEO TILL DATE

[@micaelaforlano4374]

You are an absolute life saver! I learned more from this than my college lecture, and thank goodness I did because I have a 2,000 word essay that I have to write, and your videos are the reason I actually understand them. (If you were to maybe slow down just a hair, I would appreciate But..... you you do your thing, since you do it better than anyone else.) Again, thank you!

[@ariannabroad3634]

When he said taxidermy instead of taxonomy.... dying laughing :D

[@jennifer_the_linguist]

From my 7th grade life science teacher... Kids (Kingdom) Playing (Phylum) Cards (Class) On (Order) Freeways (Family) Get (Genus) Smashed (Species)

[@loganmorton1543]

Domain could be "dumb"

[@BlckCloud73]

Taught in 12 minutes what my kid's teacher couldn't teacher in a week. This channel should get the state funds.

[@marchenkogirl]

YOU ARE GREAT! YOU HAVE BEEN HELPING ME THROUGH ALL OF MY BIO AND CHEM CLASSES :)

[@chantellerosebud1780]

"Thanks for watching this taxidermy... Wait no..." LMAO!!! No wonder kitty didn't wanna hang around 😆 Great video though, and helped me, thanks 😊

[@bellaandnemo]

Later Carl changed his last name and became somewhat "Royal" so his final name was Carl Von Linné which is his now commonly used name :) I'm from sweden and I love your videos :)!

[@millaalmeida1388]

I'm watching this for a test but it's so good I'd simply watch for knowing the subject. Luv these videos, specially phylosophy

[@zillmiracle3214]

This video is such a mood... I love it

[@christinaabanto5680]

when finals are in four days and your teacher doesnt teach so you get desperate

[@FirstRisingSouI]

If we find life on other planets that started independently, will we need another classification beyond domain? What would it be?

[@djpuff1997]

I think you just saved my Zoology final exam grade...... You are an amazing person. Thank you from my future career.

[@uzairfly]

I was sruggling for my test and didn't have any idea about taxonomy. Thank God I found you. 😍 Subscribed and liked !!

[@brandonkim8423]

Dear all the people trying to correct Hank Green; If you're so smart, why the hell are you here? Sincerely, the rest of us.

[@anniekim2445]

Nice one

[@blooms454]

Amen

[@brandonkim8423]

blooms454 why thank you

[@mariamalik728]

Finally, someone understands my annoyance with all these people correcting him!

[@Daruqe]

You saying people shouldn't try to correct him? What?

[@gdtrekkie2380]

Cat: I don't wanna be on KZbin!!!

[@M4G1CSKILLZ]

Great Video :) I learnt lots for my science test tomorrow and this video helped me a lot so thanks dude

[@9_in_the_afternoon]

Accidentally watched this at 2x speed. It was amazing. Hank's practically vibrating.

[@hjwiser]

These videos are great - I'm using them to help teach my elementary school daughters. Thanks much!

[@annaandersson6017]

Did you know that Carl Linnæus is on the swedish 100 kr bill? (Or, for now, at least. The apperance of our bills will change pretty soon. Linnæus will be replaced by the actress Greta Garbo.) Also, it's feels so strange to hear the name 'Carl Linnæus'. I've always refered to him as Carl von Linné (which is the name he got after his enoblement. It's also much more commonly used in Sweden.)

[@YoussefYoussef-hf9gs]

Views for these videos must skyrocket around this time every year.

[@lisaswaboda3127]

Thank you for your humor. My middle schooler is LOVING these!

[@lisaswaboda3127]

Oh yeah, the actual content is really cool too! ;-)

[@Shimas47]

Thanks for making these interesting videos! I have a question: what about viruses, do they also go into the same system? Or are they outside it?

[@MeetDK]

You actually teach a lot better than my science teacher

[@rmalpass]

Hank, Great work PLEASE keep it up!!

[@thetubewatcher36]

Excellent job young man. Very lively presentation for those who get easily bored, like me.

[@user-yq2ep3du5w]

Lol, he started to sniff right after I farted. Consecutively, to be precise. lol

[@aldente5311]

U R My new favorite morning coffee smart guy information vehicle. Thank you.

[@batumanav]

I have been always find this topic bored and I felt like this was the most unnecessary topic in the biology. But now I realize that biology couldn't have been exist without this topic and I feel excited because I have a lot of things to learn!

[@ollaughingbeta2233]

i love your vids and believe all of them you help me in class the most just remember that you are a hero

[@jessicakarnes8980]

There is everything from Literature to Psychology, but I think a math segment of some kind would be pretty helpful to a lot of people.

[@darkdagon4264]

are you telling me, that you don't think fungi are adorable????

[@jennali9800]

No, but I'm in love with slime mold! Look, it's moving! It wants to give you a hug!

[@ajesusencounter8261]

Me

[@user-pv9my4gl9w]

@@jennali9800 Plasmodium is my spirit animal!

[@robbiedavies2171]

I was taught this as part of one of my modules at my uni and fair to say I hated it. However thanks to you, I was able to actually learn from and really enjoy these lectures, cheers Hank, you are awesome!

[@boywonder208]

Thanks for the videos!!! helps out a lot, and puts some fun into it

[@nabils9837]

can't help but think of Dwight from The Office every-time I watch this guy lol

[@Callme_Fe4rrless069]

Domain eukaryotes Kingdom animalia Phylum chordata Class mammalia Order carnivora Family felidae Genes felis Species catus

[@stb8153]

that was helpful thanks i really enjoyed.... it was understandable it wasn't boring at all

[@warixtrims1712]

superb and really helpful for my biology chapters. hope to see your new videos.

[@hasini]

aww the kitty :3

[@vulixirus]

her name is cameo

[@0.uroboros6]

I didn't pay attention because I was obsessing over the kitty

[@MO-ts9de]

these videos makes studying fun , thanks it helped alot

[@proximacentauri2684]

I don't know why, of all subjects in biology, this is somehow the one that leaves me desperately grasping for memories in exams.