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Phylum Aschelminthes and Phylum Annelida (in Hindi)
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In this session we have completed phylum Ascheliminthes and phylum annelida in depth for NEET and AIIMS entrance exam and CBSE board exam.

Anmol Sharma is teaching live on Unacademy Plus

Anmol Sharma
||MBBS||Main Aim to be REAL i.e Redefining Education and Learning. Let's play the game Kaun Banega Doctor

Unacademy user
thanku sir...🙋...
sir work upon your pronounciation
what do you mean by osmoregulation ?
Ranu Saroj
5 months ago
The process of removal of extra amount of Water from body called osmoregulation
Ranu Saroj
5 months ago
The process of removal of extra amount of Water from body called osmoregulation
Ranu Saroj
5 months ago
The process of removal of extra amount of Water from body called osmoregulation
Sir please go a little slow, it is my humble request to please improve your pronounciation

  2. WHAT TO STUDY? Basis of Classification Levels of Organisation . Symmetry .Diploblastic and Triploblastic Organisation (Germ Layer) . Coelom Segmentation Notochord . Classification of Animals . Phylum Porifera Phylum Colenterata Phylum Ctenophora . Phylum Platyhelminthes .Phylum Aschelminthes Phylum Annelida Phylum Arthropoda . Phylum Mollusca Phylum Echinodermata Phylum Hemichordata . Phylum Chordata

  3. * Class Chonarichythyes * Class Amphibia . Class Aves Class Cyclostomata Class Osteichthyes Class Reptilia . Class Mammalia Key Point of Animal Kingdom

  4. Phylum - Aschelminthes Body shape - Circular in cross-section, hence, the name roundworms. terrestrial or parasitic in plants and animals. organization and triploblastic .Habitat - They may be free living, aquatic and . Level of organization - organ-system level of body Symmetry - bilaterally symmetrical. . Body Cavity Pseudocoelomate animals. Digestive system - Alimentary canal is complete with a well developed muscular pharynx.

  5. . Excretion - An excretory tube removes body Wastes from the body cavity tnrough the excretory pore . Reproduction - unisexual or dioecious. Also show sexual dimorphism (females are longer than males) Fertilisation - internal . Development - direct (the young ones resemble the adult) or indirect (larvae is present) Examples: Ascaris (Round Worm), Wuchereria (Filaria worm), Ancylostoma (Hookworm)

  6. Male Female Fig: Aschelminthes Roundworm Source:- This image is from NCERT Textbook Page no. 52

  7. Phylum - Annelida . Their body surface is distinctly marked out into segments or metameres (Latin, annulus: little ring) and, hence, the phylum name Annelida .Habitat - aquatic (marine and fresh water) or terrestrial; free-living, and sometimes parasitic. .Level of organization - organ-system level and triploblastic animals. Symmetry bilateral symmetry . Body cavity - present and coelomates. Locomotory organ - Body wall which has longitudinal and circular muscles. Aquatic annelids like Nereis possess lateral appendages, parapodia (for swimming).

  8. Circulatory system - closed circulatory system . Excretory organ - Nephridia which help in osmoregulation and excretion. Nervous system - consists of paired ganglia connected by lateral nerves to a double ventral nerve cord .Reproduction - some are unisexual or dioecious (Nereis) and some are bisexual or monoecious (earthworms and leeches). Reproduces sexually Examples: Nereis, Pheretima (Earthworm) and Hirudinaria (Blood sucking leech)

  9. Thank You