Read the following statements and choose the follwoing option: 1. Arthropods excrete through malphigian tubules 2. Insects have internal fertilisation 3. The body of arthropods is covered by chitinous exoskeleton. 4. The body consists of head, thorax and abdomen. 5. Arthropods have jointed appendages (arthros-joint, poda-appendages)

Step-by-step solution

This is the largest phylum of Animalia which includes insects. Over two-thirds of all named species on earth are arthropods (Figure 4.12). They have organ-system level of organisation. They are bilaterally symmetrical, triploblastic, segmented and coelomate animals. The body of arthropods is covered by chitinous exoskeleton. The body consists of head, thorax and abdomen. They have jointed appendages (arthros-joint, poda-appendages). Respiratory organs are gills, book gills, book lungs or tracheal system. Circulator