Amphibians: Characteristics and Examples

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Insects have an ______ covering called exoskeleton

external

Arthropods and insects use ______, lungs, and skin for respiration

gills

Mollusks like snails and slugs belong to the phylum ______

Mollusca

Exoskeleton provides protection and support for arthropods like ______

crustaceans Signup and view all the answers

The respiratory organs of arachnids are called ______

book lungs Signup and view all the answers

Insects, arthropods, and mollusks all have ______ body temperature

cold-blooded Signup and view all the answers

Arthropods have a ________ level of organisation.

organ-system Signup and view all the answers

The body of arthropods is covered by a ________ exoskeleton.

chitinous Signup and view all the answers

Respiratory organs in arthropods can be ________, book gills, book lungs or tracheal system.

gills Signup and view all the answers

Arthropods are ________ symmetrical animals.

bilaterally Signup and view all the answers

Insects belong to the phylum ________.

Arthropoda Signup and view all the answers

Excretion in arthropods takes place through ________ tubules.

malpighian Signup and view all the answers

Members of Platyhelminthes exhibit organ level organisation where tissues are grouped together to form organs, each specialised for a particular function. In higher phyla like Annelids, ______________, organs have associated to form functional systems.

Arthropods Signup and view all the answers

In animals like Annelids, Arthropods, Mollusks, Echinoderms, and Chordates, organs have associated to form functional systems, each system concerned with a specific physiological function. This pattern is called ______________ level of organisation.

organ system Signup and view all the answers

The digestive system in Platyhelminthes has only a single opening to the outside of the body that serves as both mouth and anus, and is hence called ______________.

incomplete Signup and view all the answers

A complete digestive system has two openings, mouth and ______________.

anus Signup and view all the answers

The circulatory system may be of two types: open type and closed type. In the closed type, the blood is circulated through a series of vessels of varying diameters like arteries, veins, and ______________.

capillaries Signup and view all the answers

Animals can be categorised on the basis of their symmetry. Sponges are mostly asymmetrical, any plane that passes through the centre does not divide them into equal halves. In contrast, some animals exhibit ______________ symmetry.

bilateral Signup and view all the answers