Phylum Cnidaria (Coelenterata) General characteristics.

The phylum’s name is derived from the Greek root word cnid- meaning nettle, a stinging plant. Cnidarians are found in many aquatic environments. Sea anemones are widely distributed, from cold arctic waters to the equator, from shallow tide pools to the bottom of the deep ocean. Jellyfish float near the surface of the open oceans and in some tropical freshwater lakes. Corals are found primarily in shallow tropical waters, but a few grow in deep cold ocean waters. Small anemone-like cnidarians like Hydra sp. are also found in freshwater lakes and streams.
n the phylum Porifera we saw a body formed of aggregated cells with no organization into tissue layers or organs. Cnidarians have a slightly more organized body plan, and have tissues, but no organs. Most cnidarians have two tissue layers. The outer layer, the ectoderm, has cells that aid in capturing food and cells that secrete mucus. The inner layer, the endoderm, has cells that produce digestive enzymes and break up food particles. The jellylike material between the two layers is called the mesoglea. All of these body layers surround a central cavity called the gastrovascular cavity, which extends into the hollow tentacles.
The body plans cnidarians generally have radial symmetry.
Many cnidarians take two main structural forms during their life cycles, a polyp form and a medusa form.

[@pragatiuniyal8546]

Not even a single lecture of yours disappoint...❤

[@sabarkhanlectures5528]

Deer ala Deer mazedar Deer zbrdst aw Deer hkwaly lecture

[@Khushi-wk9ve]

Best lecture 😊 love frem india🇮🇳

[@Bhakt_huusska]

From*

[@dloyi]

Bro what is frem

[@zoyakhan3358]

णबयतब

[@Pranay_bihari]

He teaches in PW❤

[@asmaeyasmin9268]

Sir your lectures is just excellent 👌👌👌 nice concept

[@OwaisKhan-xv4nc]

I have watched three lectures before yours sir but no one can explain it like u sir thank you so much

[@sathwickk5443]

I'm a hindhu I'm just amazed if your teaching...love you so much sir❤

[@akasheditography8135]

Ur r a banggal muslim

[@HamzaZeb-w4p]

Really hindu❤

[@OIG_07]

Bhai teaching mai Hindu Muslim nahi hota ❤

[@mushrafparveen6648]

Sir mashallah zabardast explain karre ap .....aaise mai aapka lecture sunte kich pure neend udgayi.... first time aaisa huwa mera sath...thank you sir sach mai zabardast tareeka se explain karre ap

[@AreebaIshfaq-q1b]

Exactly I m also very impressed from this lecture....very interesting seriously

[@sitaramalik660]

Sr yur lectures is just excellent 👌 nice concept... congrats yu have new subscriber🙃

[@PujaOli-hw8el]

_no no no SAE😂 😊😅😅😮🎉

[@Haoray]

Mashallah

[@abdullahmuhammad8576]

Absolutely! "Dear sir Abdul Rahman, Thank you for being an incredible educator on KZbin! Your dedication and engaging teaching style have made learning a joy. Your videos are invaluable tools that inspire and empower learners like me. Your impact is truly remarkable. Sincerely, M.Abdullah"

[@AbdulRahman-ry3wx]

Sir you are teaching very well 👏

[@ammarbahadur7824]

Outstanding sir god bless you

[@seezalprakash2087]

Nice session and wonderful teaching 👍👍

[@sajjadhussainazadar_e_nagi8155]

Our of NCERT 😅😅 h isme bohot kuch.. mgr mze aagye sir khuda aapko salamat rkhe ❤❤❤

[@AhirRaju-eq1ge]

Best lecture love from india 🇮🇳

[@kirtikumarmishra]

Nice teaching...very helpful 👌.

[@StoryTellerOfficially]

Sir you are so sweet while teaching.. very useful video for zoology students 😊

[@dreamladakh1384]

Good lecture sir 👍

[@tazeenkhan7813]

Very easy and to the point lecture.sir plz make more videos and cover more topics

[@HamzaZeb-w4p]

Thanks for explaining the topics

[@muhammadakbarjan9758]

Thanks alot and continue this 😊

[@abdnim7377]

Best teacher ever

[@AwaisAli-gw5pu]

Sir your lectures are excellent 💯

[@RanageeRanagee-n7n]

Sir ap na kaha ya acoelomates hoten ha body cavity nh hoti to diagram ma ap na konsi cavity ka zikr kya ha jesy ap na gastrovascular cavity kaha ha ???? Please sir reply...

[@TamannaYasmin-wo7ki]

Very helpful........ Thank you so much sir❤❤

[@rupeshtiwari90]

U r amazing sir❤ love from India

[@myaseenmangriomangrio2450]

Sir g your explanation is mashAllah good

[@PiyushKumar-df9rr]

Great work sir and drawing also

[@malaika5093]

You are great sir 😊🥰

[@MIYANG-uk4lj]

Good lectures all👍

[@user-lv8wk9hn6r]

Love from Bangladesh🇧🇩

[@shah7324]

Very well explained 👍🏻 Thanks sir

[@imtiazahmed5510]

Thanks a lot sir❤

[@Majid-s3r]

Very easy method and too good

[@winxclubflora8446]

Thank you sooooooo muchhhhhhh sirrrrrr veryy detailed explainations esp polyps part

[@MuhmadFaisal-o8f]

Thank u so much

[@SAMEERSINGH-iy9li]

Best Explanation ❤

[@Tanveershah-y6f]

Thank you so much sir

[@MudassirKhan-d2m]

Sir ager yay zahrela cell ko istimal kartay hoi zaher ki mad say apna khorak pakarta hai to yay zehrila khorak iss ko khod nooksan NAHI dada

[@Noorikiduniya22]

Very helpful ❤

[@Ummesalma-u4d]

Good explanation

[@nursingwalablogjodhpur741]

Best teacher

[@VilasRaut-xx3xc]

Teaching very best

[@Dr.jolly111]

Thank you so much brother 💞

[@MamoonaJaved-u6r]

JazakAllah sir

[@MohammadUmair-x3q]

Walekum assalam, it's great lacture sir

[@sonashah8251]

Wonderfullll lecture sir.

[@vishu24on7]

Lectures k sath diagram V op h❤

[@SubhanKhaskheli-k2k]

What a lecture 😮😮😮😮❤❤❤❤❤❤ sooooooooooooooooooooo nice 💯💯💯💯💯💯 🙂🙂🙂🙂🙂🙂

[@salmanahmad1853]

Good lecture 💞 SIR

[@Sofiyanaz536]

Walaikumsalam nice class

[@MariaMaria-rf4lk]

Well explained thnku sir

[@Sreeyukthavs]

Love ur lecture 🇮🇳

[@monikamonika.s-x4j]

Nice concept tqq sir❤

[@StoryTellerOfficially]

Sir no video on ctenophora?

[@SuhanaFaraz-k6z]

sir ur lecture is so benifit for us but i think this phylum is not ascelomate b/c body cavity is present i.e gastrovascular cavity and their extracellular digestion is in body cavity

[@khushisingh8451]

Cnideria phyllum is acoelomate.. sir is ✅️

[@SubashRathod-ot7gx]

Wow good teacher😊😊

[@mahadev95]

Thank you sir

[@kashishgarlyal3065]

Well explained ❤it

[@muhammadhuzaifa27719]

Thanks Sir ❤❤

[@monzakhn]

Sir echinodermatta b to radially symmetrical hen to hum ne unko akhiri men q rakha hum cnideria k bad b to rakh sakty the

[@Uj-jn9go]

Coz isme higher category Waly animals aty h ,, aur Coelenterata mein lower category Waly animals

[@FaizanAhMed427]

Thank you❤

[@GhulamGhaziIYI]

good lecture sir ggg

[@ismailakoppal3267]

Nice sir 👍

[@craftyme7510]

MASHAALLAH Sir Very nice JAZAKALLAH

[@motivationalkiduniya6605]

make video on ctenophora also please fast

[@सिवानवाला]

Kon kon 2024 me dekh raha hai

[@SyedAbdulhaseeb-ow4ml]

For madcat preparation

[@MukeshKumar-bz3rp]

Mai dekh rhi hu

[@seemakhatoon3492]

Mai dekh rahi hon bhiii

[@cappfarmer6348]

Ma

[@rameshwarchute3158]

Ladkiya hi dekh ri hai kya ki ladke bhi hai 🙄

[@rashmigusain7141]

Sir aap msc zoology syllabus cover kr skte ho plsss exms aane wale hai pls sir ya to important topics hi btado .. Invertebrate Cell biology Genetics , evolution and taxonomy Developmental biology

[@VirenderRathore-zv4be]

Jai Shri Ram ❤❤❤

[@AhmedAhmed-nh8pu]

Mashallah sir ❤️❤️

[@AtharGanie]

❤

[@Cherryred649]

In our book it said that in aceolomates there is mesoderm and in diploblastic mesoderm is absent

[@Ilhe_69]

Fabulous 🔥❤️

[@learnbiobytricks2335]

Thank you sir sir ap konsy board ki book sy parhaty hi

[@sundrisundri1603]

Thankyu so much bhaiya ❤❤

[@RahulKumar-ou4ur]

Brother,in colentrata class- cubozoa is not polyp and medusa

[@AsadUllah-dv8kb]

Thanks sir g

[@aditipawar3475]

Sir ji sorry but.... Coelentrata me body cavity hoti he.... Gastro vascular cavity

[@sadiq8339]

Sir complete krain jaldi fsc 1 all topics koi skip na katain lecture

[@सिवानवाला]

Digital board ka majja white board pe Wow😮😮😮😮

[@Satyawan-zz3mj]

Sir hath mein marker le to liya ise chlamydia bhi lo 😅😅😅😅😅

[@akak-tx1nt]

BEST ❤

[@osamasallar3001]

Sir classes of cnidarian per lecture day please

[@errorgamingyt7628]

JAI SIYA RAM 🚩🚩🙏🙏

[@sagarffofficial4038]

JAI shree ram

[@learnwithsidraafreen8740]

Hydra ?

[@SahilKhan-bs4ct]

Walaikum assalam

[@yuvrajrajput1702]

Jai shree Ram ❤

[@AliAli-x3l5k]

❤❤❤

[@nmdcatpimsnustecatpreparti4477]

plz sir qickly upload the lec....als waiting for next

[@ZainLaghari-wv4uz]

Make the lectures of 9th Class biology plz plz plz

[@GamerFishery7]

Jai shree Ram 🚩🚩🚩

[@muzamilahmed1245]

Sir ya full chapter Upload kro new book ka

[@shaikshahid803]

Sir more videos on zoology as well as botany 1 St sem

[@deadlygaming5467]

Biology king

[@Bhaskar5554]

I am from India

[@kundalibhagya6516]

sir please support and movement chapter upload karein

[@Megha_Mallick___86588]

Sir apka video clear nehi a raha

[@AdnanKhan-ml5ir]

♥️♥️♥️♥️♥️

[@SirajAli-wv2qw]

Op lecture sor

[@ShanKhan-o3n]

What is zooids

[@onlystudy1605]

Sir Hindi mein padhaiye, we are facing problems to understanding your language 🙏🏻🙏🏻