Two characteristic features of a phylum is given below. 1.Jointed legs 2. Chitinous exoskeleton a) Identify the phylum? (1) b) Write any two special characters of this phylum.
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Phylum Arthropoda
Arthropods are joint-legged animals and you must have come across a few of these animals. Some prominent ones include insects, spiders, ants, bees, crabs, shrimps, millipedes, centipedes etc. Scientifically speaking, they all come under the Animal Kingdom under phylum Arthropoda.
Characteristic features of Phylum Arthropoda
- The body structure shows bilateral symmetry.
- They are triploblastic.
- They can be found in all types of habitats – land, water and soil.
- They have jointed limbs.
- The body is segmented into three regions – Head, Thorax and Abdomen.
- The body cavity is filled with blood and is called the haemocoel. The blood is white in colour.
- The exoskeleton is hardened and is made of chitin.
- They have a well-developed central nervous system.
- The head is well developed and bears the sensory organs and brain.
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