Classification of Vertebrate and Invertebrate Animals Quiz

Endothermic Animals

• Endothermic animals regulate their body temperature internally, maintaining it regardless of environmental conditions.
• Common examples include mammals (like humans, dogs, and whales) and birds (e.g., eagles and penguins).

Exoskeleton Animals

• An exoskeleton is a hard outer structure that provides support and protection.
• Animals with exoskeletons include arthropods such as insects (e.g., beetles), crustaceans (e.g., crabs), and arachnids (e.g., spiders).

Fish Respiration

• Fish breathe through gills, which extract oxygen from water.
• They continuously pull water over their gills to facilitate gas exchange, allowing oxygen to enter the bloodstream and carbon dioxide to be expelled.

Mammalian Features

• Mammals possess several distinct features:
  • Fur or hair covering their bodies
  • Mammary glands that produce milk for their young
  • A three-bone structure in the middle ear aiding in hearing
  • Warm-blooded metabolism, sustaining a stable internal temperature

Amphibian Life Cycle

• Certain amphibians have webbed limbs and exhibit dual respiratory systems.
• As larvae, they breathe through gills; as adults, they transition to lungs for breathing, commonly seen in frogs and toads.