Part - 1 :- Forms of Echinodermata larva | Bipinnaria, Brachiolaria, Auricularia Larva

#echinodermata #echinoderms
Adult echinoderms exhibit pentaradial symmetry and have a calcareous endoskeleton made of ossicles, although the early larval stages of all echinoderms have bilateral symmetry. The endoskeleton is developed by epidermal cells and may possess pigment cells, giving vivid colors to these animals, as well as cells laden with toxins. Gonads are present in each arm. In echinoderms like sea stars, every arm bears two rows of tube feet on the oral side. These tube feet help in attachment to the substratum. These animals possess a true coelom that is modified into a unique circulatory system called a water vascular system. An interesting feature of these animals is their power to regenerate, even when over 75 percent of their body mass is lost.Echinoderms are unisexual animals. Sexual dimorphism is absent. Fertilisation takes place in water. The development may be direct or indirect. If the development is indirect it includes larva stages. In different classes of echinoderms, different types of larvae complete the development. The larval form is bilaterally symmetrical. It undergoes metamorphosis and radial symmetri­cal adult is developed.

Part - 2 :-

Metamorphosis :-

Harmonal regulations in metamorphosis :-

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Echinodermata
Echinoderms
Types of echinodermata larva
Types of larva in echinoderms
Alampally phanindra
Phanindra gupta
Metamorphosis
Types of larva
Zoology
larval forms of echinodermata
bipinnaria larva
larvae of echinoderms
doliolaria larva
phylum echinodermata
echinodermata larval forms
echinodermata classification
echinodermata general characters and classification

[areefsugam]

Nice 👌 English explanation plzz keep it up, useful for neet

[akmalraza]

Ur vedio are very helpful for me at my examination tymmm
Thankxxx alot 4 making this vedio 4

[srikarsharma]

Very well explained bro I'm studying msc zoology at kakatiya university 😊❤❤❤

[majibarrahaman]

sir plz make a video on echinodermata larvae affinities with chordates...

[sakinaalam]

Nice video, great job 👍....
Plzz upload more videos on other phylum 🙏

[jyotiSingh__]

Sab kuch bdhiya h but bhyi speed dheere kro...itti raftar mein bol re

[deepudiptibaskey]

Sir aap bhut fast bolte h otherwise good explanation

[souravprasadmalla]

how they have sexual dimorphism is absent even if they are unisexual ?byt both unisexual and sexual dimorphism are same .is not it?

[aritraroy]

Pehele khud parle Laura ... auricularia larva is not the next stage of brachiolaria larva...it's the first stage larva of class holothuroidea..

[shaileshwarisingh]

Sir plizz in hindi explan kuchh thoda shamgh gate h but language likhne pe problem hoti h

[fireking]

Sir plz echinoderms larvae in tamil video

[raviprakash-loeu]

unisexual means both male and female are present, bisexual means both male and female gonads are present in one sex also called hermoprodite, please check once your explanation

[harini-]

Sexual dimorphism is observed in echinoderms, do research before you post something...