Term
| What was one of the earliest fish to evolve? |
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Definition
| Ostracoderms (modern agnatha) |
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Term
| What characteristic is the major difference in classification between the perch and the hagfish? |
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Definition
| The perch is in the class Osteichthyes (has a bony skeleton). The hagfish is in the class Agnatha and has a cartilage skeleton. |
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Term
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Definition
| The study of amphibians and reptiles |
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Term
| Lampreys and Hagfish belong to what class? |
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Definition
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Term
| How do fish get the dissolved oxygen from the water? |
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Definition
| As water passes over a system of extremely fine gill membranes, fish absorb the water's oxygen content. Gills contain a network of fine blood vessels (capillaries) that take up the oxygen and diffuse it through the membranes. |
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Term
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Definition
| The male fish deposits a fluid containing sperm over the eggs |
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Term
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Definition
| A fin which has spiny rays of cartilage and/or bone to support it. |
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Term
| There are three groups of bony fish. Name them. |
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Definition
| ray finned, lobe finned, and lung fish |
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Term
| What are bony and cartilaginous fish said to have evolved from? |
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Definition
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Term
| How many species of fish have been identified? |
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Definition
| 27,000 - 28,000. There may be another 20,000 yet unknown! |
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Term
| What order do frogs and toads belong to? |
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Definition
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Term
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Definition
| An animal whose body temperature varies with the temperature of its surroundings; any animal except birds and mammals.Cold blooded animals - those who cannot regulate their body temperature. |
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Term
| What did amphibians evolve from? |
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Definition
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Term
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Definition
| A cold-blooded vertebrate typically living on land but breeding in water; aquatic larvae undergo metamorphosis into adult form. A LIZARD LIKE AMPHIBIAN. |
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Term
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Definition
| They are horny or thickened pads on each thumb of the male frog. They are especially prominent during the mating season, when they assist the male in grasping the female during the sexual embrace, in which the male extrudes sperm over the eggs as these are ejected by the female. |
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Term
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Definition
| Various extinct fishes of the class Placodermi, characterized by bony plates of armor covering the head and flanks. The bodies of placoderms were spindle-shaped or flattened, and their skeletons were usually partially bony and included a cranium. Placoderms were the first group of fish to evolve jaws, but are not closely related to the jawed fish of today. |
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Term
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Definition
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Term
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Definition
| 1.Agnatha (Myxini & Cephalaspidomorphi)2.Chondrichthyes, 3.Osteichthyes |
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Term
| Name 4 types of fish scales and give an example of a fish which has them. |
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Definition
| 1. Ganoid scales (diamond shaped) - Gars, 2. Placoid scales (tooth shaped) - cartilaginous fishes: sharks, rays, and chimaeras, 3. Ctenoid scales (have tiny teeth called ctenii on the posterior edge that give them a rough texture) most ray-finned fishes have these, 4. Cycloid scales Cycloid scales are thin and overlapping, permitting more flexibility. Unlike ganoid scales, cycloid scales grow as the fish grows, and in some species, show annual growth rings. Cycloid scales are found in the bowfin |
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Term
| Bony fishes are made up of two groups; what are they? |
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Definition
| lobe finned (lungfishes), and ray-finned |
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Term
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Definition
| vertebrates with backbones and nerve cords that have expanded into brains |
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Term
| 3 characteristics of amphibians are: |
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Definition
| 1.Amphibians are ectotherms 2. Amphibians undergo metamorphosis 3. Amphibians have a 3-chambered heart to ensure that cells receive the larger amount of oxygen required for walking on earth (as opposed to the 2 chambered heart of fishes who require less oxygen for swimming) |
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Definition
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Term
| Amphibians probably evolved from: |
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Definition
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Term
| Amphibians breathe through their |
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Definition
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Term
| Salamanders belong to the order |
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Definition
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Term
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Definition
| Order of Amphibians without tails which includes frogs and toads. |
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Term
| Some more characteristics of amphibians |
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Definition
• They have two pairs of legs, or a total of four limbs.
• They lay their eggs in water.
• They obtain oxygen through their smooth, moist skin.
Many also have respiratory organs called lungs.
• Their sensory organs are adapted for sensing on land.
Most amphibians live in moist environments. Their skin is a respiratory organ • They have two pairs of legs, or a total of four limbs.
• They lay their eggs in water.
• They obtain oxygen through their smooth, moist skin.
Many also have respiratory organs called lungs.
• Their sensory organs are adapted for sensing on land.
Most amphibians live in moist environments. Their skin is a respiratory organ that functions only when it is wet. |
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Term
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Definition
| Sound-producing bands of tissue in the throat. Air moves over the vocal chords and they vibrate, causing molecules in the air to vibrate. |
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Term
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Definition
| Sound-producing bands of tissue in the throat. Air moves over the vocal chords and they vibrate, causing molecules in the air to vibrate. |
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Term
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Definition
| Vibrations from water or air are picked up by the tympanic membrane and transmitted to the inner ear and then to the brain. It also amplifies the sounds frogs make. |
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