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Questions and Answers
What is a characteristic that fish and reptiles have in common?
What is a characteristic that fish and reptiles have in common?
- They both give birth to live young
- They are both mammals
- They are both cold-blooded (correct)
- They both have fur or hair
Which type of fish is characterized by having a skeleton made of cartilage?
Which type of fish is characterized by having a skeleton made of cartilage?
- Saltwater fish
- Cartilaginous fish (correct)
- Bony fish
- Freshwater fish
What is a common habitat for reptiles?
What is a common habitat for reptiles?
- Terrestrial environments (correct)
- Arctic tundras
- Deserts
- Oceans
Which of the following is a characteristic of bony fish?
Which of the following is a characteristic of bony fish?
Which type of reptile is characterized by having a shell for protection?
Which type of reptile is characterized by having a shell for protection?
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Study Notes
Fish
- Characteristics:
- Cold-blooded (ectothermic)
- Breathing through gills
- Scales or bony plates for protection
- Fins for movement and balance
- Types:
- Bony fish (Osteichthyes): majority of fish species, including goldfish and salmon
- Cartilaginous fish (Chondrichthyes): sharks, rays, and skates
- Habitat:
- Freshwater (rivers, lakes, ponds)
- Saltwater (oceans, seas)
Reptiles
- Characteristics:
- Cold-blooded (ectothermic)
- Scaly skin
- Lay eggs (oviparous)
- Breathe air through lungs
- Types:
- Snakes (Serpentes): limbless, elongated bodies
- Lizards (Squamata): varied species, including geckos and iguanas
- Turtles (Testudines): shell-protected, slow-moving
- Crocodilians (Crocodilia): large, carnivorous, semi-aquatic
- Habitat:
- Terrestrial (land-dwelling)
- Semi-aquatic (swampy or wetland areas)
- Freshwater (rivers, lakes, ponds)
Fish
- Fish are cold-blooded, meaning their body temperature is regulated by the environment.
- They breathe through gills, which extract oxygen from water.
- Scales or bony plates provide protection and support.
- Fins enable movement and balance in the water.
Types of Fish
- Bony fish, such as goldfish and salmon, make up the majority of fish species.
- Cartilaginous fish, including sharks, rays, and skates, have a cartilage skeleton.
Fish Habitat
- Fish can be found in freshwater habitats, such as rivers, lakes, and ponds.
- Many fish species also inhabit saltwater environments, including oceans and seas.
Reptiles
- Reptiles are cold-blooded, meaning they rely on external sources of heat to regulate their body temperature.
- They have scaly skin that helps to prevent water loss.
- Reptiles lay eggs and breathe air through lungs.
- They have a three-chambered heart, except for crocodilians, which have a four-chambered heart.
Types of Reptiles
- Snakes are limbless, elongated reptiles that have evolved to thrive in a variety of habitats.
- Lizards, such as geckos and iguanas, are a diverse group of reptiles with a range of characteristics.
- Turtles have a shell that protects their body and provides support.
- Crocodilians, including crocodiles, alligators, and caimans, are large, carnivorous reptiles that inhabit semi-aquatic environments.
Reptile Habitat
- Many reptiles are terrestrial, meaning they live on land.
- Some reptiles, such as crocodilians and turtles, are semi-aquatic, inhabiting swampy or wetland areas.
- Freshwater habitats, including rivers, lakes, and ponds, are also home to some reptiles.
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