Science Do As Directed.

(i) It belongs to phylum porifera.
(ii) It bears numberous pores on its body called ostia and oscula.
(iii) It has special type of cell-collar cells.
(iv) It has good ability of regeneration.
(v) It is always attached to substratum and hence do not show locomotion.
(vi) Its body is supported by spicules or spongin fibres.

(i) Bat belongs to class Mammalia.
(ii) It is adapted for aerial mode of life.
(iii) Bat is a warm blooded animal.
(iv) It is viviparous.

(i) Petromyzon belongs to class cyclostomata.
(ii) The skin is soft without scales.
(iii) Endoskeleton is cartilagenous.
(iv) It is an ectoparasite.
(v) It has jawless mouth with suckers.
(vi) Paired appendages are absent.

(i)Herdmania belongs to sub-phylum-Urochordata.
(ii)Body is covered by skin-like test or tunic.
(iii) Notochord is present only in the tail region.
(iv) It is a hermaphrodite.

(i) Amphioxus belongs Cephalochordata. to sub-phylum.
(ii) Notochord is present throught the body length.
(iii) Pharynx is very large and contains gill-slits.
(iv) It is unisexual.

(i) Balanoglossus belongs to phylum Hemichordata.
(ii) Notochord is present in proboscis region.
(iii) Marine animal lives in burrows in sand.
(iv) Has pharyngeal gill slits.
(v) It is a unisexual animal.
(vi) It has pharyngeal gill slits.

(i) Centipede belongs to phylum Arthropoda.
(ii) Body shows many jointed appendages.
(ii) Centipede is triploblastic and eucoelomate and Bilaterally symmetrical.
(iv) Chitinous exoskeleton is present around their body.
(v) It is unisexual.

(i) Jelly fish belongs to Phylum Coelenterata.
(ii) Cnidoblast bearing tentacles are present around the mouth. Tentacles are useful for capturing the prey whereas cnidoblasts inject the toxin in the body of the prey.
(iii) Body is umbrella shaped, hence called Medusa.
(iv) It is diploblastic, and shows radial symmetry.

(i) It belongs to class Reptilia.
(ii) It is cold-blooded (Poikilotherm).
(iii) It shows creeping movement as body cannot be lifted up.
(iv) Neck is present between head and trunk.
(v) External ear is absent.

(i) Frog belongs to class Amphibia.
(ii) Can live in water as well as on land during adult life.
(iii) Skin is without any exoskeleton and is usually kept moist for respiration.
(iv) They have two pairs of appendages. Digits are without claws.
(v) External ear is absent but tympanum is present.

(i) Crocodile belongs to class Reptilia.
(ii) Skin is dry and scaly.
(iii) It is a cold-blooded (Poikilothermic) animal.
(iv) Body is divided into head, neck, trunk and tail.
(v) Crocodiles are oviparous.
(vi) It creeps on land.

(i) This animal belongs to class Aves.
(ii) They are found at the south pole, ie. at Antarctica, which is a cold region.
(iii) Exoskeleton shows feathers.
(iv) Penguin is warm-blooded.
(v) They are adapted to a cold region life.
(vi) Penguin is oviparous.
(vii) Neck is present between head and trunk.

(i) Elephant belongs to class mammalia.
(ii) Body shows differentiation into head, neck, trunk and tail.
(iii) Mammary glands are present.
(iv) The heart is four chambered.
(v) Largest terrestrial mammal.
(vi) It is warm-blooded.
(vii) Body is divided into head, neck, trunk and tail.

(i) Grasshopper belongs to phylum Arthropoda.
(ii) Body is covered with chitinous exoskeleton.
(iii) Body is divided into head, thorax and abdomen.
(iv) There are two pairs of wings and three pairs of jointed appendages for locomotion.
(v) It is bilaterally symmetrical.

(i) Rohu belongs to class pisces.
(ii) It is found in fresh water.
(iii) It is a bony fish.
(iv) Skin shows presence of scales.
(v) Respiration occurs with gills.