Structural perfections exhibited by the insect pests.
1) Exoskeleton
The exoskeleton or body wall or integument is made up of chitin. The advantages of exoskeleton are many, viz., it provides a large area for attachment of muscles, provides complete protection to the vital organs from external injury, controls evaporation and so affords an excellent mechanism to protect against desiccation. Further, the exoskeleton gives the insects much physical strength without their being too heavy and also allows enormous modifications.
2) Small Size
Small size of insects favours subsistence and shelter. The chances of survival of the species are increased, it is easier for the individuals to subsist on small quantities of food and to take refuge in small niches against the vagaries of nature. Both these advantages favour increase in the number of individuals in the insect populations. With larger numbers resulting from smaller size the chances of variability and mutation also increase, thus making it possible for nature to conduct a larger number of trials in evolution. Lastly, the smaller size leads to greater proportionate efficiency.
3) Functional Wings
The power of flight greatly
_____ _____ ____ ____ __________ ______ ___.
_________ ____ _________ ______ ______ _________ ___ _______.
_______ _______ _________ ______ _______ ________ _________ ___ ______ _____ ________ _________.
________ _____ __________ ________ _________ ______ _______ _________.
_______ ______ ______ ___ _______ ________ _______ ______ _____.
________ _____ __________ ________ ____.
___ __________ __________ ______ ________ ________ ____ ____ ________ _____ ___ ________.
______ _________ ____ _________ __________.
____ _____ ________ ___ ___ ____.
___ ________ ________ ____ ________ _________ ___ _____ ________ ___ ____.
________ _____ ____ _______ ___.
______ __________ _____ _______ ___ _________.
__________ _________ __________ _________ _______ _____ _____ ___ _________ __________.
________ ______ ______ _________ ________.
________ ________ __________ ______ __________ __________ _____ ______ ______ _________.
________ _______ ___ ________ _______ _________ ________ _____ ______ _______ _______ ______.
________ ________ ______ _________ _____ _______ __________ ______ ___ ________ _____ _______.
____ ___ __________ __________ _________ _______ __________ _____ _________ ____ ______.
_____ ____ __________ _______ ___ _____.
________ __________ _________ ________ ______ ___ _____.
__________ _________ ________ __________ ______ __________.
________ _________ __________ ________ ________ _____ ____.
_____ ____ ____ _______ __________ ____ ___ ___ __________ ________.
___ _________ ______ _____ ___.
____ _________ ________ ________ __________.
______ ____ _____ _________ _________ _________ _____ _____ ____ ___ ___.
____ ___ _______ ________ _______.
__________ __________ _________ _______ ____ _____.
________ _____ _____ ________ _______ ____.
_________ ________ ____ _________ ________ ___ _______ __________ ________ ______ _______ ___.
______ ______ __________ _______ ________ ___ ______ ________ ____ __________ ___ ________.
____ ______ ____ _________ ____ ____.
_______ ______ ______ _____ _______.
_______ __________ ____ __________ _____ _______ _______ _____ __________ ______ ____ ________.
_____ ___ __________ ________ ____ ______ ______.
____ ___ __________ _______ ________ ___ __________.
__________ _____ ____ ___ ________ _______ ______ ____ ________ __________ __________ ________.
___ ___ ____ _________ ____ ____ _______ _______ ________.
_____ ________ _________ ______ _________ ______ _________ ______ __________.
______ ______ __________ _____ _________ __________ ____ _______ ____ ______ ___.
__________ _____ _________ ________ _______ ________.
_______ _________ _____ ____ ____ ____.
____ ________ __________ ____ _________ _________ ______.
_________ _______ _______ _____ _______ ___ ______.
___ ____ _______ ____ ____ _______ ____ _______ _______.
_______ _________ ________ _______ _____ _______ _____.
__________ __________ ___ ______ _______ ________ _________ ____ _________ _____.
_______ _____ ______ ___ ___ _____ __________.
__________ __________ ______ ______ ____ ________ __________ ____ __________.
_____ __________ _______ ______ ________ _______.
__________ __________ ________ ______ ____ ____ _______.
____ ___ _____ _________ ________ ________ ___ _________ ________ _____.
__________ _______.
- Solved Assignments
- Study Notes
- Guess Papers
- Question Papers
✓ Unlock up to 60% of the answer
✓ No payment required