Page 2 - 3.Home assignment II(Expt&Activity)
P. 2
2. COCKROACH (Periplaneta)--------It belongs to phylum Arthropoda.
FEATURES OF THE PHYLUM
1. The body is divided into segments with a distinct head.
2. It possesses jointed appendages with three pairs of legs.
SPECIMEN FEATURES
Following are adaptations found in cockroaches.
1. The body is covered by chitinous cuticle which is impervious to water.
2. Head is triangular in shape and bears two compound eyes and two antennae.
Antennae are sensory in function.
3. BONY FISH--------It belongs to phylum Chordata, sub phylum Vertebrata and
class Pisces.
Features of Phylum Chordata
1. They have notochord.
2. They have post anal tail.
Features of Class Pisces
1. They are aquatic animals.
2. They have four pairs of gills which are covered by operculum.
3. They have terminal mouth.
Specimen Features
Bony fish adaptive to live in water (aquatic adaptations).
1. They have streamlined body which helps in swimming.
2. Their body is covered by scales.
3. They have dorsal, pelvic, pectoral and tail fins for locomotion.
