Chordata Flashcards

Question

Pisces System found in circulatory system Endoskeleton Skull Cranial nerve

Answer 1

Sinus venosus , renal, hepatic portal Cartilage / bone Monocondylic 10-pairs

Answer 2

Receptor organs which can detect vibrations [rheoreceptor] & electric field Mesonephric type Called fry / hatchling

Answer 3

Migration of fresher from fresh water to marine water Eg Anguilla Migration of fishes from marine water 10 fresh water Eg salmon , hilsa

Answer 4

Extinct true fishes Bony plates hence called "armoured fishes" Eg Climatius = first jawed fish

Answer 5

Elasmobranchi [cartilaginous fishes] Marine with stream lined body Cartilage Persistent through out life Present over the skin containing minute placoid. Scales

Answer 6

Ventrally Powerful are called predaceous Separate and with out operculum [gill cover) 5 to 7 pairs of gills Due to absence of air bladder they have to swim constantly to avoid sinking

Answer 7

Scroll value in intestine ( TO increase surface area ) Ampulla of lorenzini = special structure at dorsal surface of head Heterocercal type In males pelvic fins bear claspers Internal Viviparous

Answer 8

Chondrichthyes Scoliodon = Indian shark - viviparous Electric ray = electric organ is found which is a modified muscle V =100 Volts exoskeletonless Saw fish

Answer 9

Chondrichythes Great white shark Trygon - its dorsal fin has poisonous spines

Answer 10

Teleostomi (bony fish) Marine and freshwater with bony Streamlined Skin covered with cycloid / ctenoid scales Mostly terminal teeth are found in jaws

Answer 11

4 pairs of gills gills covered by operculum Air bladder - buoyancy In intestine absent Absent in place Anus +nt Ampulla of lorenzini

Answer 12

Homocercal type External Claspers are absent in male Direct oviparous

Answer 13

Sea horse pregnant male Swims in sea water in vertical direction Structure present on abdomen of male Collects the eggs Secondary viviparous and parental care Osteichthyes

Answer 14

Flying fish Cat fish / magur Fesh water Katla fresh water Osteichthyes

Answer 15

Rohu / Indian carp fresh water Fighting fish ( aquarium fish) Larvivorous fish Osteichthyes

Answer 16

Angel fish (aquarium fish) Coelocanth lining fossil

Answer 17

Class Amphibia Reptile Aves Mammals

Answer 18

Aquatic, terrestrial except Marine For reproduction . Do not have protective covering to check evaporation Head & truck tail maybe present

Answer 19

Moist without scale. Ichthyophis Through skin . Cause numerous glands are found in skin Bufo Two pair of limbs Forelimbs = 4 digits Hindlimb = 5

Answer 20

Few Amphibia have ability to change colour by expansion and contraction of pigments( chromatophore) Frog A.c , urinary bladder , genital ducts open By gills skin lungs buccopharygeal cavity ( frog )

Answer 21

3 chambered ( 2 atria 1 ventricles) arteriovenous Biconvex,oval ,nucleated Renal portal system , hepatic portal system Have two occipital condyles (dicondylic skull)

Answer 22

Have eyelids Only one ear ossicle columella (stapes) Tympanum represents the ear 10 pairs in no Found only in larval stage

Answer 23

1 pair of kidney . Mesonephric type Adults Tailed animals & larvae Cold blooded / poikilothermal Seperate external / internal Oviparous

Answer 24

Toad Hyla Frog

Answer 25

Salamandra Limbless amphibian

Answer 26

Herpetology First successful terrestrial animals Creeping or crawling mode Mostly terrestrial animals but some are aquatic on nature Head neck trunk tail

Answer 27

By dry ,cornified skin,epidermal scales / scutes Epidermal scale / bony scutes / bony plates Snakes & lizards When present 2 pair each limb has 5 digits

Answer 28

Homodont polyphyodont mostly pleurodont Crocodile 🐊 thecodont present Lungs 3 chambered but it is 4 chambered in crocodile 🐊 both right left systemic arches are +nt

Answer 29

+nt , monocondylic External ear openings absent .Tympanum represents ear One pair of metanephric kidney 12 pairs

Answer 30

At the roof of buccal cavity jacobsons organ +nt Separate Internal Megalecithal ( with large amounts of yolk) and cleidoic ( covered by shell made up of CaCo3 Cleidoic Snakes

Answer 31

Cold blooded poikilothermal Direct Parental care +nt

Answer 32

Reptile Turtle Tortoise 🐢 Tree lizard Calotes

Answer 33

Crocodiles 🐊 Alligator Wall lizard Bangarus Viper

Answer 34

Poisonous snakes Eryx , python, rat snake

Answer 35

Ornithology Streamlined.: divided into head neck (long and flexible] Presence of feathers and most of them can fly except flightless birds ( ostrich) Form of soft feathers [ except hind limbs] Derivative of Stratum corneum

Answer 36

Worm blooded / homorothermous Dry and without glands Oil glands / preen glands found at base of tail or uropygium Secrete oil, which softens and lubricates feathers

Answer 37

( With 3 digits) modified into wings help in conserving heat 4 clawed digits, scales are found only on hind limbs Sitting Sound producing organ at junction of trachea & bronchi

Answer 38

Has additional chambers, crop, gizzard Crop = quick food ingestion, storage Gizzard= crushing food which is swallowed unmasticated 3 chambered Into horny beak

Answer 39

Spongy lungs for respiration Connected to lungs supplement respiration Completely four chambered, only right aortic arch+ nt Hepatic portal. System

Answer 40

Fully ossified [bony] Pneumatic bones = hollow, long, having air, cavity Fn = make. The body light in weight and help in flying Some vertebrae of posterior body portion joint together to form Last 4 or 5 caudal vertebrae fused to form

Answer 41

Is large Swollen basal part of sternum , offers a plane for connecting flight muscles in flying bird Uncinate processes Metanephoie. Semisolid substance Excreta of marine birds (used as manures)

Answer 42

Urinary bladder and copulatory organ Large, smooth, highly developed Well developed for overall mode of life 12 pair External ear + nt but ear pinna absent Columella bones ( stapes one ossicle ) . Cochlea (un coiled)

Answer 43

A specific comb like structure found in all birds in eyes except kiwi Helps in accommodation of eye and provide nutrition to eye balls Also control the pressure of liquid + nt in eye Acute vision and telescopic vision Only left ovary and left oviduct monodelphic Oviparous

Answer 44

Unisexual separate Internal Oviparous Large , megalecithal,cleidoic shell is perforated Direct Amniota Parental care found

Answer 45

Crow Ostrich Columba Neophron Female koel-an

Answer 46

Parrot 🦜 Pavo🦚 Penguin 🐧 Smallest bird can fly forward and backward Messing connecting link b/w reptile and aves

Answer 47

Mammalogy Cosmopolitan found in variety of habits Pteropus . Dolphin 🐬 whale 🐳 Head neck trunk tail Horizontal, muscular diaphragm b/w thorax and abdomen '

Answer 48

Is unique in possessing hair . Is thick, water proof, glandular Presence of milk producing gland by secretion of which the young ones are nourished Mammary glands , in male Horns, nails, claws or hoof Two pairs Absent prototheria

Answer 49

Different types of teeth are+nt in jaw In sockets of jaw bone in buccal cavity this dentition is called thecodont dentition Teeth erupts two times in life span Made up of dentary bone Is by one pair of lungs [ enclosed in pleural cavity ]

Answer 50

Larynx is found in neck region Four chambered double circulation , only left aortic (systemic ) arch + nt , sinus venosus Small, circular, enclueated Oval RBC = family camilidae - llama and camel Bony , dicondylic 7 cervical vertebrae Bicephalic

Answer 51

One pair of Metanephric kidneys are situated in abdominal cavity Very complex in structure A special structure is present for connection of both cerebral hemisphere of brain.Absent in monotremes and marsupials Optic lobes ore four in no and are solid. All 4 optic lobes collectively known as 12 pair in no

Answer 52

External ear present Malleus, incus, stapes are 3 her ossicles Cochlea is highly coiled spirally Unisexual, separate Of males ore situated [ outside the body ] in scrotal sacs . A distinct penis in males Internal, takes place in fallopian tubes Viviparous [ which give birth to their young ones] with few exception Direct

Answer 53

Placental mammals - embryo is attached to uterus of mother by placenta Fn = nutrition, respiration, excretion Worm blooded and homoiothermos Microlecithal

Answer 54

Platypus = oviparous Camelus 🐪 Pteropus Horse 🐴 Mammals

Answer 55

🦘 macropus viviparous Monkey🐒 Rat 🐀 Canis 🐕‍🦺 Cat 🐈 Mammals

Answer 56

Elephant 🐘 Common dolphin 🐬 Balaenoptera 🐋🐳 Panthera Tigris 🐅 Lion 🦁 Mammalssss