Mammals are characterized by the presence of hair or fur and mammary glands that produce milk.

Mollusca are primarily soft-bodied animals, many of which have a hard shell for protection.

Porifera, or sponges, are characterized by the presence of numerous pores (ostia) in their body.

Most cnidarians exhibit radial symmetry, allowing them to interact with their environment from all directions.

Organisms in the phylum Cnidaria, such as jellyfish and corals, exhibit radial symmetry.

Platyhelminthes, or flatworms, exhibit bilateral symmetry, which is a key characteristic of this phylum.

Reptiles typically have a three-chambered heart, except for crocodilians which have a four-chambered heart.

Class Aves (birds) are warm-blooded, maintaining a constant body temperature.

Class Aves is characterized by the presence of feathers, which are unique to birds.

Butterflies are insects and belong to the class Insecta, characterized by having three pairs of legs and usually two pairs of wings.

Jellyfish are examples of cnidarians, which are known for their stinging cells called cnidocytes.

Phylum Chordata includes animals that possess a notochord at some stage of their development, such as sharks.

Reptiles are known for having scales that protect their bodies and reduce water loss.

Birds are the only group of animals that possess feathers, which are essential for flight and insulation.

Birds are the only group of animals characterized by the presence of feathers.

Amphibians typically have a three-chambered heart, consisting of two atria and one ventricle.

Phylum Arthropoda is characterized by a segmented body, jointed appendages, and an exoskeleton made of chitin.

Annelida, or segmented worms, are characterized by their segmented bodies.

Phylum Porifera, which includes sponges, is characterized by a porous body structure.

Mollusca includes soft-bodied animals, many of which have a hard shell for protection.

Annelids, such as earthworms, are characterized by their segmented bodies.

Echinoderms exhibit radial symmetry and have a calcareous endoskeleton.

Porifera, or sponges, are characterized by their porous bodies that allow water to flow through.

Echinodermata do not possess a notochord; this feature is characteristic of Chordata.

Phylum Mollusca is characterized by soft bodies, often with a shell, and a mantle, but they do not have jointed legs.

Porifera, or sponges, lack true tissues, which distinguishes them from other multicellular organisms.

Jellyfish belong to the phylum Cnidaria, which is known for its stinging cells called cnidocytes.