your one stop bio channel
TRANSCRIPT
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YOUR ONE STOP BIO CHANNEL
NEET 11th Board12th Board8:00 AM - 10:00 AM 9:00 PM 5:00 PM
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https://docs.google.com/document/u/3/d/1ETbBXJ3WADxbDzySv8ZoLJVHJ7bMU717w0yqElzHsfc/mobilebasic
GET YOUR SESSION PDF HERE
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What does it mean when food is “Organic” or “Natural?”The word organic has multiple meanings. To a chemist, an organic compound contains
carbon and hydrogen atoms. Chemically, all food is therefore organic. To a farmer or
consumer, however, organic foods are produced according to a defined set of standards.
Organic Food: Crops grown by the farmer without applying pesticides (with few exceptions),
petroleum-based fertilizers, or sewage sludge. Organically raised cows, pigs, and chickens
Should not receive growth hormones or antibiotics, In addition, no food labeled “organic” may
be genetically engineered or treated with ionizing radiation.
Natural Food: A natural food may or may not be organic.
The term natural refers to the way in which foods are
processed, not how they are grown.
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ANIMAL KINGDOM- AMPHIBIACharacteristics of AMPHIBIA
✓ They are amphibious in nature; found in
fresh water and moist places.
✓ Poikilothermic (Cold blooded animals)
✓ Skin is smooth or rough, rich in glands
which keep it moist ; skin with
pigmented cells, i.e., chromatophores.
✓ Body is without scales.
✓ Endoskeleton is mostly bony, notochord
does not persist in adults.
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ANIMAL KINGDOM- AMPHIBIACharacteristics of AMPHIBIA
✓ Head and trunk are distinct ;
neck and tall may or may not be
present.
✓ Limbs tetrapods (four-limbed),
pentadactyl type (five-fingered).
✓ Respiration occurs by lungs, skin
or buccal lining, gills are present
at least during Larval stage for
respiration.
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ANIMAL KINGDOM- AMPHIBIACharacteristics of AMPHIBIA
✓ Heart three chambered with two auricles and
a ventricle, red blood corpuscles are large,
biconvex, oval and nucleated.
✓ Brain is not much developed, cranial nerves
are 10 pairs.
✓ Sexes are separate, i.e., dioecious,
✓ Eggs with gelatinous covering, usually laid in
water.
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ANIMAL KINGDOM- AMPHIBIACharacteristics of AMPHIBIA
✓ Fertilization is external.
✓ Development is indirect with a
tadpole larva which undergoes
metamorphosis to become adult.
✓ E.g. Salamanders,
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Phylum – ChordataSubphylum- VertebrataClass – AmphibiaExamples: Salamandra, Hyla, Ichthyophis, Rana, Bufo, MNEMONIC: Super Hero Ironman Ran out of butter
Ichthyophis (Limblessamphibia)
Salamandra (Salamander)
Hyla (Tree frog) Rana (Frog) Bufo (Toad)
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ANIMAL KINGDOM- REPTILIACharacteristics of Reptilia
✓ These are first truly terrestrial animals
living in warmer regions.
✓ Poikilothermic (Cold blooded animals)
✓ Body is divisible into head, neck and
trunk. tail is well developed in some,
while it is reduced in others.
✓ Two pairs of pentadactyl limbs are
present ; but in snakes limbs are
reduced or absent.
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ANIMAL KINGDOM- REPTILIACharacteristics of Reptilia
✓ Body is covered with epidermal horny scales.
✓ Skin is dry, impermeable and devoid of glands.
✓ Respiration takes place by lungs
only, gills are absent.
✓ Heart is incompletely four-
chambered, having two auricles
and incompletely divided ventricle.
✓ In crocodile, heart is completely
four chambered.
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ANIMAL KINGDOM- REPTILIACharacteristics of Reptilia
✓ The nervous system comprises
of 12 pairs of cranial nerves.
✓ The lateral line system is
absent in reptiles.
✓ Reptiles are ureotelic,
uricotelic, and ammonotelic.
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ANIMAL KINGDOM- REPTILIACharacteristics of Reptilia
✓ Sexes are separate.
✓ Fertilization is internal
(characteristics of land animals).
✓ The embryo always lies in a fluid
filled sac called amnion.
✓ They is no larval stage in
development.
✓ e.g. Testudo (tortoise),
Chelone(turtle) Draco (flying lizard),
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Phylum – ChordataSubphylum- VertebrataClass – ReptiliaExamples: Bangarus, Chelone, Chameleon, Alligator, Testudo, Calotes, Crocodilus, Hemidactylus, Naja, Vipera MNEMONIC: The big heavy violent crocodile couldn’t climb a chair
Vipera (Viper) Crocodilus (Crocodile) Calotes (Garden lizard)
Chameleon (Tree lizard)
Testudo (Tortoise)
Chelone (Turtle) Alligator (Alligator) Hemidactylus (Wall lizard)
Naja (Cobra)
Bangarus (Krait)
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