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PLEASE MATCH YOUR ASSIGNMENT QUESTIONS ACCORDING TO YOUR SESSION
IGNOU MZOE-05 (January 2026 – December 2026) Assignment Questions
1. Name the hormones controlling moulting and metamorphosis in insects. Describe the hormonal control of moulting and metamorphosis in detail.
2. a). Give an account of the organs present in the foregut regions of insect digestive system.
b). Compare the process of osmoregulation in terrestrial insects.
3. a) Explain mechanism of circulation in insects.
b) Explain the physiology of gaseous exchange in terrestrial and aquatic insects.
4. Explain the processes of oogenesis and spermatogenesis in insects.
5. a). Describe the bioluminescence in insects and discuss its significance.
b). Explain the physiology of nerve cells in insects.
6. a). Why it is important to evaluate LD50 and LC50 while assessing the toxicity of pesticides?
b). Discuss the differences between the mechanism of action of organophosphates and carbamates.
7. How are rotenoids different from the neonicotinoids in their source, mode of action and toxicity?
8. a). Describe the source, active ingredient and uses of neem oil as a safe pesticide.
b). Describe the environmental and health implications of persistent organic pollutants (POPs) such as DDT.
9. Define the following terms:
a). Biopesticide
b). Nanopesticide
c). Antifeedant
d). Entomopathogenic fungi
e). Antidote
10. Name the three processes of dealkylation in microsomal metabolism of pesticides. Explain each with the help of examples.
