A-Notochord; B-Post-anal part; C-Gill slits; D-Nerve cord
A-Nerve cord; B-Notochord; C-Post-anal part; D-Gill slits
A-Notochord; B-Nerve cord; C-Gill slits; D-Post-anal part
A-Gill slits; B-Post-anal part; C-Nerve cord; D-Notochord
B. A-Nerve cord; B-Notochord; C-Post-anal part; D-Gill slits
Segmentation
Antennae
Bilateral symmetry
Exoskeleton
1 & 2
2 & 4
3 & 4
1 & 3
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
Metamerism
Axial organization
Bilateral symmetry
Pharyngeal gill slits
Three pairs of legs and segmented body.
Chitinous cuticle and two pairs of antennae.
Jointed appendages and chitinous exoskeleton.
Cephalothorax and tracheae.
(i) and (ii)
(i) and (iv)
(i), (ii) and (iii)
All of these
notochord is absent.
pharyngeal gill-slits are lacking.
dorsal nerve cord is absent.
heart is lacking.
Cnidocytes
Choanocytes
Interstitial cells
Gastrodermal cells
Platyhelminthes
Arthropoda
Mollusca
Ctenophora
Naja (Cobra)
Bangarus (Krait)
Viper (Viper)
All of these
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.
Mackerals and rohu
Lampreys and hag fishes
Guppies and hag fishes
Lampreys and eels
one single opening to the digestive canal.
cilia on the surface to create water current.
radial symmetry.
asymmetrical body.
In chondrichthyes notochord is persistent throughout life.
All mammals are viviparous and possess diaphragm for breathing.
All sponges are marine.
All reptiles possess scales, have a three chambered heart and are cold blooded (poikilothermal).
X - Coelenterate, Y - Polyp, Z - Medusa
X - Cnidarian, Y - Medusa, Z - Polyp
X - Ctenophora, Y - Radula, Z - Hypostome
X - Porifera, Y - Osculum, Z - Radula
Balanoglossus
Echinus
Ancylostoma
Limulus
Earthworm, pinworm, tapeworm
Prawn, scorpion, Locusta
Sponge, Sea anemone, starfish
Malarial parasite, Amoeba, mosquito
They have a water vascular system.
They have an internal skeleton.
They are protostomes.
They have bilateral symmetry at larval stage.
Only (i)
Both (i) and (ii)
Both (i) and (iii)
All of these
calcium hydroxide
calcium sulphate
calcium carbonate
sodium bicarbonate
Column -I | Column- II |
---|---|
(Phylum) | (Examples) |
A. Echinodermata | I. Ascidia, Doliolum |
B. Hemichordata | II. Asterias, Ophiura |
C. Urochordata | III. Branchiostoma |
D. Cephalochordata | IV. Balanoglossus, Saccoglossus |
A IV; B II; C I; D III
A II; B IV; C I; D III
A II; B IV; C III; D I
A II; B I; C IV; D III
Reptilia : possess 3 - chambered heart with one incompletely divided ventricle.
Chordata : Possess a mouth provided with an upper and lower jaw.
Chondrichthyes : Possess cartilaginous endoskeleton.
Mammalia : Give birth to young one.
porifera
coelenterata
ctenophora
platyhelminthes
Sycon
Euspongia
Spongilla
Pleurobrachia
They all have calcareous spicules.
They have high regenerative power.
They are found only in marine water.
They are all radially symmetrical.
Round worms (aschelminthes) are pseudocoelomates.
Molluscs are acoelomates.
Insects are pseudocoelomates.
Flatworms (platyhelminthes) are coelomates.
two
three
four
none of these
PlatyhelminthesPlanaria, Schistosoma, Enterobius
Mollusca Loligo, Sepia, Octopus
Porifera Spongilla, Euplectella, Pennatula
Cnidaria Bonellia, Physalia, Aurelia
Click to check answer
Click to check answer
Click to check answer
Click to check answer
A - Sycon, B - Euspongia, C - Spongilla
A - Euspongia, B - Spongilla, C - Sycon
A - Spongilla, B - Sycon, C - Euspongia
A - Euspongia, B - Sycon, C - Spongilla