WHAT IS AN ANIMAL?!??!?!??!?!?!???? Flashcards Preview

Life Science > WHAT IS AN ANIMAL?!??!?!??!?!?!???? > Flashcards

Flashcards in WHAT IS AN ANIMAL?!??!?!??!?!?!???? Deck (30):
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INVERTEBRATES

Animals without a backbone

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VERTEBRATES

Animals with a backbone

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Homeostasis

Keeping internal body conditions stable

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Adaptations

Structures and behaviors that allow animals to perform their functions are called

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Tissue

A group of similar cells that performs a a specific function

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Organ

Made up of different tissues

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Radial symmetry

An animal has radial symmetry if imaginary lines can be drawn through a central point to divide it into 2 mirror images

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Bilateral symmetry

An animal has bilateral symmetry if only one one of symmetry can be drawn to divide it into halves that are mirror images

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Cnidarian

Invertebrates that have stinging cells and take food into a central body cavity

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Mollusk

Invertebrates with soft, unsegmented bodies that are often protected by a hard shell

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Arthropods

Invertebrates that have a hard outer covering, segmented bodies, and pairs of jointed appendages

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Exoskeleton

Outer skeleton

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Echinoderm

An invertebrate that has an internal skeleton and has a system of fluid-filled tubes

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Endoskeleton

An internal skeleton

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Chordates

Members of the chordata phylum

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Notochord

A flexible rod that supports a chordates back

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Vertebrae

Singular vertebra

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Ectotherm

An animal that produces little internal body heat

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Endotherm

An animal that controls the internal body heat it produces and regulates

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Fish

Vertebrate that lives in water and uses fins to move

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Cartilage

A tissue more flexible than bone

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Amphibian

A vertebrate that is ectothermic and spends its early life in water and its adult life on land

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Reptile

An ectothermic vertebrate that has scaly skin and lungs and lays eggs on land

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Bird

An endothermic vertebrate that lays eggs and flies

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Mammals

Endothermic vertebrates that have skin covered in fur or hair

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Mammary glands

Organ that lets mammals produce milk

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Monotremes

Lay eggs

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Marsupials

Usually develop in a pouch on the mothers body

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Placental mammal

Develops inside its mothers body until its body's system can work independently

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Placenta

Materials are exchanged between mother and embryo through the placenta