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
D. All of the above
Prawn
Pheretima
Wuchereria
Ctenoplana
Ctenophora
Cnidaria
Porifera
Protozoa
Body covered with dry and cornified skin, scales over the body are epidermal, they do not have external ears.
Body is covered with moist skin and is devoid of scales, the ear is represented by a tympanum, alimentary canal, urinary and reproductive tracts open into a common cloaca.
Fresh water animals with bony endoskeleton and airbladder regulate buoyancy.
Marine animals with cartilaginous endoskeleton and body is covered with placoid scales.
Only (i)
Both (ii) and (iii)
(i), (iii) and (iv)
All of these
PlatyhelminthesPlanaria, Schistosoma, Enterobius
Mollusca Loligo, Sepia, Octopus
Porifera Spongilla, Euplectella, Pennatula
Cnidaria Bonellia, Physalia, Aurelia
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
Bombyx and Apis
Laccifer and Anopheles
Locusta and Limulus
All of the above
Sycon - Porifera
Aurelia - Coelenterata
Pleurobrachia - Ctenophora
Tapeworm - Platyhelminthes
Switch from gill respiration to air-breathing lungs.
Improvements in water resistance of skin.
Alteration in mode of locomotion.
Development of feathers for insulation.
five
six
seven
eight
respiration and absorption.
osmoregulation and circulation.
respiration and excretion.
osmoregulation and excretion.
porifera
coelenterata
ctenophora
platyhelminthes
one single opening to the digestive canal.
cilia on the surface to create water current.
radial symmetry.
asymmetrical body.
A radially symmetrical; B bilaterally symmetrical
A bilaterally symmetrical; B radially symmetrical
A bilaterally symmetrical; B asymmetrical
A metamerically segmented; B asymmetrical
Column- I | Column -II |
---|---|
(Organism) | (Excretory structures) |
A. Cockroach | I. Nephridia |
B. Cat fish | II. Malpighian tubules |
C. Earthworm | III. Kidneys |
D. Balanoglossus | IV. Flame cells |
E. Flatworm | V. Proboscis gland |
A I; B III; C II; D IV; E V
A III; B I; C II; D V; E IV
A II; B I; C III; D V; E IV
A II; B III; C I; D V; E IV
It is present only in larval tail in ascidians.
It is replaced by a vertebral column in adult frog.
It is absent throughout the life in humans from the very beginning.
It is present throughout life in Amphioxus.
paired nature.
non-collapsible walls.
ciliated inner lining.
origin from head.
Hydra
Aurelia
Physalia
Obelia
Cucumaria – Echinodermata
Ascidia – Urochordata
Balanoglossus – Hemichordata
Hirudinaria – Annelida
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.
Attain complex body shapes and thus locomote more precisely.
Move through loose marine sediments.
Be hermaphroditic.
Inject paralytic poisons into their prey.
Cnidocytes
Choanocytes
Interstitial cells
Gastrodermal cells
Germinal layers.
Pathway of water transport.
Pattern of organization of cells.
Serial repetition of the segments.
(i) and (ii) only
(ii) and (iv) only
(i), (ii) and (iv) only
All the five statements.
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
A - Male Ascaris, B - Hirudinaria (leech), C- Nereis
A - Female Ascaris, B - Nereis, C-Hirudinaria (leech)
A - Female Ascaris B- Hirudinaria (leech), C - Nereis
A - Male Ascaris, B - Nereis, C- Hirudinaria (leech)
Labeo
Myxine
Clarias
Trygon
(i) and (iii) only
(ii) and (iv) only
(ii), (iii), (v) and (vi) only
All of these
Both (i) and (iii)
Both (i) and (iv)
(i), (ii) and (iii)
All of these
X - Coelenterate, Y - Polyp, Z - Medusa
X - Cnidarian, Y - Medusa, Z - Polyp
X - Ctenophora, Y - Radula, Z - Hypostome
X - Porifera, Y - Osculum, Z - Radula