NEET SHORT NOTES & TRICKS

2022-06-18 06:03:08 ╔════════════════════╗
★ PHYLUM ASCHELMINTHS ★
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■Body is circular in cross-section: roundworms
■freeliving, aquatic and terrestrial or parasitic
■ Alimentary canal is complete
■ Well-developed muscular pharynx.
■ Dioecious
■ Fertilisation is internal

EXAMPLES

☆ Ascaris - Roundworm
☆ Wuchereria - Filaria worm
☆Ancylostoma – Hookworm

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2022-06-17 07:07:10 CHEMICAL COORDINATION & INTEGRATION Highligted NCERT Open / Comment

2022-06-17 05:36:23 ╔═════════════════════╗
★PHYLUM PLATYHELMINTHES★
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●dorso-ventrally flattened body: flatworms
●mostly endoparasites
●bilaterally symmetrical
● Hooks and suckers- parasitic forms
● flame cells help in osmoregulation and excretion
● hermaphrodite
●Fertilisation is internal and development is indirect

EXAMPLES

☆Planaria
☆Taenia - Tapeworm
☆ Fasciola - Liver fluke

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2022-06-15 00:45:20 ╔═══════════════════╗
★PHYLUM CTENOPHORA★
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■Also known as sea walnuts or comb jellies
■ exclusively marine
■radially symmetrical
■The body bears eight external rows of ciliated comb plates, help them in
locomotion
■Bioluminescence is well-marked
■ hermaphrodite
■ reproduction only by sexual means
■ Fertilisation is external and development is indirect

EXAMPLES

☆ Pleurobrachia
☆Ctenoplana

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2022-06-14 10:18:50 NEURAL CONTROL & COORDINATION Highligted NCERT.pdf Open / Comment

2022-06-13 07:14:17 ╔═══════════════════╗
★PHYLUM CTENOPHORA★
╚═══════════════════╝

■Also known as sea walnuts or comb jellies
■ exclusively marine
■radially symmetrical
■The body bears eight external rows of ciliated comb plates, help them in
locomotion
■Bioluminescence is well-marked
■ hermaphrodite
■ reproduction only by sexual means
■ Fertilisation is external and development is indirect

EXAMPLES

☆ Pleurobrachia
☆Ctenoplana

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2022-06-12 19:13:18 EXCRETORY PRODUCT & THEIR ELIMINATION
Highligted NCERT.pdf Open / Comment

2022-06-12 07:13:19 ╔═════════════════════╗
★ PHYLUM: COELENTRATA ★
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■ Marine (sessile or free-swimming)
■ radially symmetry
■ cnidoblasts or cnidocytes contain the stinging capsules or nematocysts)
basic body forms called polyp(sessile) and medusa (free living)
■ exhibit Metagenesis

EXAMPLES -

☆ Hydra
☆ Corals
☆ Obelia
☆Physalia - Portuguese man-of-war
☆Adamsia - Sea anemone
☆Pennatula - Sea-pen
☆Gorgonia Sea-fan
☆Meandrina - Brain coral

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2022-06-11 09:58:39 ╔═══════════════════╗
★ PHYLUM : PORIFERA ★
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■marine
■ asymmetrical animals
■have water canal system having ostia, spongocoel osculum and choanocytes
■water transport is helpful in food gathering, respiratory exchange and removal of waste
■ skeleton made up of spicules or spongin fibres
■ hermaphrodite
■ Fertilisation is internal and development is indirect

EXAMPLES

★Sycon – Scypha
★ Spongilla - Fresh water sponge and
★ Euspongia - Bath sponge

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