Animals and Birds Vocabulary Part 1

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Animals and Birds Vocabulary Part 1

Animal - A living organism which feeds on organic matter, typically having specialized sense organs and nervous system and able to respond rapidly to stimuli. They can be further classified as -
1. vertebrates
2. invertebrates
Animals with a backbone1 are vertebrates and those without a backbone are invertebrates. Half of all described vertebrate species are fishes and three-quarters of all described invertebrate species are insects.
Vertebrates can be further classified as -
1. Amphibians – Amphibians are ectothermic2, tetrapod3 vertebrates, They can live both on land and in water
2. Reptiles - Reptiles are usually tetrapod, cold-blooded vertebrates. (Vertebrates have backbones.) They have dry skin covered with scales or bony plates and usually lay soft-shelled eggs.
3. Birds – Birds are a group of endothermic4 vertebrates, characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a lightweight but strong skeleton
4. Mammals – a warm-blooded vertebrate animal of a class that is distinguished by the possession of hair or fur, females that secrete milk for the nourishment of the young, and (typically) the birth of live young.

Invertebrates can be further classified as -
1. Insects
2. Crabs
3. Spiders
4. Snails
5. Worms
 
Word – Meaning
1. Backbone - the series of vertebrae extending from the skull to the pelvis; the spine.
2. Tetrapod – a four-footed animal
3. Ectothermic - any animal whose regulation of body temperature depends on external sources, such as sunlight or a heated rock surface.
4. Endothermic - arm-blooded animals; that is, those that maintain a constant body temperature independent of the environment. The endotherms primarily include the birds and mammals.

Also Read -

Animals and Birds vocabulary Part 2

Insects and Bugs Vocabulary






















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