These systems are concerned with the continuity of the race. Reproduction in
most insects is bisexual (males and females).
MALE REPRODUCTIVE SYSTEM:
It is concerned with the production, storage and delivery of spermatozoa. The
Nervous system is concerned with the coordination of diverse activities of the
various systems of the insect body.
It is composed of NEURONS which carry
information in the form of electrical impulses from external and internal SENSILLA
It is the anteriormost tagma of the insect body concerned with feeding, perception
of stimuli, and coordination of bodily activities. Consequently, it is furnished with
mouthparts, antennae and eyes; and brain to perform the above functio
It is the outer body covering of insects. At some places it has invaginated (as
apodemes and apophyses) to form endoskeleton for the attachment of muscles. It also
forms the inner lining of fore- and hind-gut of alimentary c
IMPORTANCE OF INSECTS TO MAN
Nature of damage
Man and animals
Infesting stored food
It is the middle region of the insect-body and consists of three segments, namely
pro-, meso-, and meta-thorax. It is the locomotory centre of the insect body. Hence each
thoracic segment bears a pair of legs and in wing-bearing insects p
It is concerned with the maintenance of constant internal environment proper
level of salts and water, and osmotic pressure in the haemolymph by the elimination of
toxic nitrogenous wastes derived from the metabolism of proteins. To it pl
APPENDIX - 1
Glossary of Technical Terms
L. ab-. away; do, put; -men, a noun forming suffix indicating 'condition'
It Is the hindmost of the three regions of the body of an Insect
L. accessorius, (accessor-), additional; -Ius (-y), an ad
There are two types of circulatory systems in the ANIMAL KINGDOM.
In many animals (vertebrates) the blood travels through the special vessels such as
arteries, capillaries and veins. This is known as CLOSED SYSTEM.
In INSECTS the blood
Alimentary canal of an insect is a tubular structure passing through the body that
provides the special internal environment for the food to be mechanically and chemically
disintegrated and brought to the vicinity of absorbent cells. Henc