NEET BIOLOGY

Detailed explanation-1: -In most insects clear segmentation can be seen in the abdomen. The abdomen contains the heart, reproductive organs, mid-gut and other digestive organs.

Detailed explanation-2: -An insect has three body parts. The front part is called the head. The middle part is called the thorax. The last part is called the abdomen.

Detailed explanation-3: -The ABDOMEN is the final and largest body region. It holds most of the insect’s guts and reproductive organs. Some insects breathe directly through skin or gills, but most breathe through small holes on the sides of the body, called spiracles.

Detailed explanation-4: -The insect body is divided into three parts: the head, thorax, and abdomen. The head is specialized for sensory input and food intake; the thorax, which is the anchor point for the legs and wings (if present), is specialized for locomotion; and the abdomen for digestion, respiration, excretion, and reproduction.

Detailed explanation-5: -The basic number of segments in the abdomen is eleven plus the telson which bears the anus (note: Matsuda considers the telson to be a true segment). It appears the maximum number in even primitive forms is 12 (only adult proturans and the embryos of some hemimetabolous insects have 12 segments).