The upcoming discussion will update you about the differences between Insect and Spider. Difference # Insect: 1. Body is divisible into head, thorax and abdomen. 2. It has compound eyes. 3. Labrum, labium, hypo pharynx, mandibles and maxillae are the mouth parts. 4. Wings are usually present. 5. Three pairs of legs are present. 6. Antennae are present. 7. There [...]
In this article we will discuss about the General Characters and Classification of Phylum Echinodermata. General Characteristics of Phylum Echinodermata: Some of the general characters of Phylum Echinodermata are listed below: 1. Habitat: All existing echinoderms are marine. They generally live at sea bottom borne are pelagic (free swimming in open water) and a few are sessile (attached to the [...]
In this article we will discuss about the general characters and classification of Phylum Mollusca. General Characteristics of Phylum Mollusca: 1. Habitat: They are mostly marine. Many, however, occur in fresh water and some even in damp soil. 2. Body Form: The body of molluscs is un-segmented with a distinct head, muscular foot and visceral hump. Neopilina is a segmented [...]