Biological Classification and Characteristics of Animals Quiz

Animals do not have cell walls made of cellulose; instead, they have cell membranes.

Jellyfish belong to the phylum Cnidaria, characterized by stinging cells called cnidocytes.

Mammals are warm-blooded, regulating their internal body temperature, unlike cold-blooded animals.

Starfish belong to the phylum Echinodermata, characterized by radial symmetry and a water vascular system.

Arachnids, like spiders, have four pairs of legs, distinguishing them from insects.

Earthworms belong to the phylum Annelida, known for their segmented bodies.

Chordates have a notochord, a flexible rod-like structure providing support during embryonic development.

Amphibians typically exhibit external fertilization, where eggs are fertilized outside the body in water.

Vertebrates have a backbone (vertebral column), while invertebrates lack this skeletal feature.

Flies belong to the phylum Arthropoda, characterized by jointed legs and exoskeletons made of chitin.

Echinoderms, like starfish, exhibit radial symmetry, with body parts arranged around a central point.

Annelids, like earthworms, have bodies divided into distinct segments.