IGNOU MZOE 005 SOLVED ASSIGNMENT

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MZOE 005 2025 - English

ASSIGNMENT

(Tutor Marked Assignment)

Course Code: MZOE-005

Assignment Code: MZOE-005/TMA/2025

Maximum Marks: 100

Note: Attempt all questions. The marks for each question are indicated against it.

1. Name the hormones controlling moulting and metamorphosis in insects. Describe the hormonal control of moulting and metamorphosis in detail.

2.a). Explain the structure and function of Malpighian tubules in insects.

b). Compare the process of osmoregulation in terrestrial and aquatic insects.

(5)3.a) Explain mechanism of circulation in insects.

b) Discuss the functions of haemolymph.

.a). Discuss various respiratory methods employed by aquatic insects.

(5)). Explain the impulse transmission process in insects.

5.a). Explain the hormonal link between flight and egg production with suitable examples.

b). Define the following:

i). Spermatogenesis

ii). Paedogenesis

iii). Polyembryony

iv). Parthenogenesis

v). Sex determination

6. Explain the different indices of acute toxicity i.e. LD50, LC50 and LTs and significance of these values.

7. What are organochlorine compounds? Describe their characteristic features and uses. Discuss, why these are considered harmful for the environment?

8.a). What are pyrethroids? How are these different from the pyrethrins? Categorize them based on the cyano group and discuss, their mode of action.

b). Describe the source, active ingredient and uses of neem oil as a safe pesticide.

(5).a). How do insect growth regulators (IGRs) function as insecticides? What role do enzyme inhibitors play in the action of pesticides?

b). Explain the different types of hydrolytic processes that help in detoxification of pesticides during extramicrosomal metabolism of pesticides.

10. Define the following terms:

i) Biopesticide

ii)Nanopesticide

Antifeedant

iv) Entomopathogenic fungi

v) Antidote

MZOE 005 (January 2026 - July 2026) - ENGLISH

ASSIGNMENT

(Tutor Marked Assignment)

Course Code: MZOE-005

Assignment Code: MZOE-005/TMA/2026

Maximum Marks: 100

Note: Attempt all questions. The marks for each question are indicated against it.

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.

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Course Name	Master of Science (Zoology)
Course Code	MSCZOO
Programm	Courses
Language	English

 

 

 

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