It is an aquatic form.
Circulatory system is of open type.
It possesses parapodia for swimming.
Neural system consists of paired ganglia connected by lateral nerves to a double ventral nerve cord.
B. Circulatory system is of open type.
A – Locust, B – Scorpion, C – Prawn, D – Pila
A – Locust, B – Prawn, C – Scorpion, D – Pila
A – Locust, B – Scorpion, C – Prawn, D – Snail
A – Butterfly, B – Scorpion, C – Prawn, D – Pila
Cnidocytes
Choanocytes
Interstitial cells
Gastrodermal cells
Bombyx and Apis
Laccifer and Anopheles
Locusta and Limulus
All of the above
Hemichordata
Chordata
Echinodermata
Annelida
Platypus, Penguin, Bat, Hippopotamus.
Shrew, Bat, Cat, Kiwi.
Kangaroo, Hedgehog, Dolphin, Loris.
Lion, Bat, Whale, Ostrich.
They are bilaterally symmetrical, triploblastic and coelomate animals.
Body is covered by a calcareous shell and is unsegmented with a distinct head, muscular foot and visceral hump.
The mouth contains a file-like rasping organ for feeding, called radula.
All of the above
Naja (Cobra)
Bangarus (Krait)
Viper (Viper)
All of these
Round worms (aschelminthes) are pseudocoelomates.
Molluscs are acoelomates.
Insects are pseudocoelomates.
Flatworms (platyhelminthes) are coelomates.
Sycon - Porifera
Aurelia - Coelenterata
Pleurobrachia - Ctenophora
Tapeworm - Platyhelminthes
Hairy skin and oviparity
Hairy skin and mammary glands
Mammary glands and teeth
Pinna and teeth
arthropoda
mollusca
echinodermata
chordata
Sycon
Euspongia
Spongilla
Pleurobrachia
Column-I | Column-II |
---|---|
(Features) | (Examples) |
A. Pseudocoelomates | a. Hydra, Adamsia |
B. Diploblastic | b. Ctenoplana, Aurelia |
C. Cellular level of | c. Ascaris, Wuchereria organization |
D. Radial symmetry | d. Sycon, Spongilla |
E. Metamerism | e. Pheretima, Neries |
A - e, B - b, C - d, D - c, E - a
A - c, B - a, C - d, D - b, E - e
A - b, B - a, C - c, D - e, E - d
A - c, B - b, C - d, D - a, E - e
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A : Biradial, organisms is divided into unequal halves by any plane through the central axis.
B: Bilateral, body is divided into equivalent right and left halves by only one plane.
A: Asymmetrical, organisms is not divided into equal halves by any plane through the central axis.
B: Radial, in which any plane passing through the central axis of the body divides the organism into two identical halves.
Earthworm, pinworm, tapeworm
Prawn, scorpion, Locusta
Sponge, Sea anemone, starfish
Malarial parasite, Amoeba, mosquito
A - Pleurobrachia, B - Cnidoblast, C - Aurelia, D - Adamsia
A - Aurelia, B - Adamsia, C - Cnidoblast, D - Pleurobrachia
A - Cnidoblast, B - Pleurobrachia, C - Adamsia, D - Aurelia
A - Adamsia, B - Aurelia, C - Pleurobrachia, D - Cnidoblast
gills
lungs
skin
all of these
notochord is absent.
pharyngeal gill-slits are lacking.
dorsal nerve cord is absent.
heart is lacking.
X - Coelenterate, Y - Polyp, Z - Medusa
X - Cnidarian, Y - Medusa, Z - Polyp
X - Ctenophora, Y - Radula, Z - Hypostome
X - Porifera, Y - Osculum, Z - Radula
Porifera
Annelida
Mollusca
Echinodermata
Hydra
Aurelia
Physalia
Obelia
nephridia
flame cells
malphigian tubules
gills
(ii), (iv) and (v)
(i), (iii) and (v)
(iii), (iv) and (v)
(i), (ii) and (iii)
Presence of paired pharyngeal gill slits
Ventral heart
Solid and ventral nerve cord
Presence of post-anal tail
(i) and (ii)
(iii) and (iv)
(i), (ii) and (iii)
All of these
Column -I | Column- II |
---|---|
A. Physalia | I. Sea anemone |
B. Meandrina | II. Brain coral |
C. Gorgonia | III. Sea fan |
D. Adamsia | IV. Portuguese man-of-war |
A III; B II; C I; D IV
A IV; B III; C II; D I
A IV; B II; C III; D I
A II; B III; C I; D IV
Torpedo
Petromyzon
Trygon
Exocoetus
Only (i)
Only (iv)
(i), (ii) and (iii)
All of these
An external skeleton made of chitin (a polysaccharide) and protein rather than a shell made chiefly of mineral salts.
Subdivision of the legs into movable segments.
Distinct group of muscles, derived from many body segments, that move the separate parts of the exoskeleton.
All of the above