Identifying and Classifying Wildlife Lesson C5-1

Scientific Classification System Developed by Linneaus A common way of classifying animals is based on morphology. Morphology is based on internal and external body structures. Animals can be classified into vertebrates or invertebrates. II. A common way of classifying animals is based on morphology. Morphology is based on internal and external body structures. Animals can be classified into vertebrates or invertebrates. Invertebrates often have an exoskeleton Vertebrates have an internal supporting skeleton

Classification con’t A genus is composed of very similar groups of organisms. However, they do not naturally breed with each other. A species contains very similar organism. Organisms within the same species breed with each other. A species can be further broken into subspecies or breeds. Most people call animals by their common names. However, to ensure that they are talking about the exact same animal, scientists use scientific names.

Describe groups of vertebrate animals. Mammals are animals that are covered with fur or hair. They regulate their internal body temperature. Their heart has four chambers. Additionally, the females produce milk for the babies. Mammals can further be classified based on their digestive system. Monogastric animals have a single compartment stomach Ruminant animals have a four-compartment stomach

Examples of mammalian wildlife

Birds are covered with feathers. They have two sets of appendages Birds are covered with feathers. They have two sets of appendages. One set is used for flying (wings) the other for walking or swimming (legs). They lay fertile eggs.

Fish have an exterior covering of scales or skin Fish have an exterior covering of scales or skin. They have paired fins, and get oxygen from water through their gills. They adjust their body temperature to the surrounding water. Some fish lay infertile eggs, which are later fertilized by the male. Others give birth to live young.

Fish

Classes of animals Amphibians are animals that live in the water and on land. Their skin secretes mucus. They have two sets of appendages. They reproduce either in the water, or very moist soil. The young go through a metamorphosis as they mature.

Reptiles have a dry skin covered with scales Reptiles have a dry skin covered with scales. With the exception of snakes, reptiles have two sets of legs and five clawed toes on each leg. Reptiles lay thick walled fertile eggs.

Invertebrates (without a backbone) Insects have an exoskeleton, six legs, and most can fly. They lay fertile eggs, and the young go through a metamorphosis as they mature.

Crustaceans have a very strong exoskeleton, which is shed as they grow Crustaceans have a very strong exoskeleton, which is shed as they grow. They have four pairs of appendages, and two pairs of antennae on their heads.

Mollusks are small, soft bodied animals without an internal skeleton Mollusks are small, soft bodied animals without an internal skeleton. They can be further divided into: bivalves (have a two part shell, like a clam) gastropods (single part shells, like a snail). They are usually found in salt water, but can also be found in freshwater or on land.

Worms have soft bodies, no legs, and no antennae Worms have soft bodies, no legs, and no antennae. Worms can be further broken into groups of segmented worms, flatworms, and roundworms. Segmented worms include earthworms and leeches. Flatworms include flukes and tapeworms. Roundworms include nematodes and pinworms.

Arachnids Spiders, ticks, mites, and scorpions Arachnids Spiders, ticks, mites, and scorpions. They have four pairs of legs and two body parts.

What are the following animals classified as?