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29 cze 2022 · The five main groups of vertebrates are fish, amphibians, reptiles, birds, and mammals. There are actually more categories, since bony fish are separate from jawless fish (lampreys and hagfish), cartilaginous fish (sharks and rays), and lobe-fin fish (lungfish and coelacanths).
1 cze 2024 · The six main animal groups are invertebrates, fish, amphibians, reptiles, birds, and mammals. Each type exhibits unique evolutionary adaptations, enabling them to thrive in diverse environments.
22 paź 2024 · This phenomenon is seen in schools of fish, flocks of birds, and herds of mammals, as well as in the primate associations that suggest the beginnings of human society. Form and function General features. Chordates have many distinctive features, suggesting that there has been extensive modification from simple beginnings.
The tapetum lucidum is what makes the eyes of sharks and deep sea fish, as well as land mammals like cats and cows, shine at night. Fish eyes are usually placed just dorsal of and above the mouth. Just like the mouth of a fish, the size, shape, and position of the eyes can provide information about where a fish lives and what it feeds on.
29 wrz 2024 · Living fishes represent some five classes, which are as distinct from one another as are the four classes of familiar air-breathing animals—amphibians, reptiles, birds, and mammals. For example, the jawless fishes (Agnatha) have gills in pouches and lack limb girdles. Extant agnathans are the lampreys and the hagfishes.
Fish and Fishes. Fish are aquatic vertebrate animals that have gills but lack limbs with digits, like fingers or toes. Recall that vertebrates are animals with internal backbones. Most fish are streamlined in their general body form.
Whale sharks, the largest fish, give birth to live young and eat only tiny fish, squid, and plankton. Some species, such as the weedy sea dragon, are so bizarre they seem almost unreal. Fish...
