IGNOU MZOE 004 SOLVED ASSIGNMENT

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MZOE 004 2025 - English

ASSIGNMENT

(Tutor Marked Assignment)

Course Code: MZD-004

Assignment Code: MZD-004/MA/2025

Maximum Mark:100

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

1. Explain the role of hormones involved in moulting and metamorphosis.

2 Differentiate between the following pairs of words.

a). Exopterygota and Endopterygota

b). Hypognathousand Opisthognathus head

c). Piercing-sucking and Sponging type of mouth parts

d). Simple and Compound eye.

3.a). Describe briefly about abdominal appendages.

b). Discuss the main function of mechanoreceptors.

4. Write short notes on thearyheo of the following:

a). Heteromorphosis

b). Polyphenism in aphids

c). Dispause

5. a). Diagrammatically explain the general structure of insect integument

b). Explain the role of accessory glands in sperm transfer and reproductive success in male insects.

6.a). Explain the mechanism and structural adaptations in aquatic insects for locomotion

b). Describe the role of accessory glands in female reproductive system of insects.

7.Give one example of each of the following insect orders.

1) Phasmida

Orthoptera

Lepidoptera

iv) Hemiptera

v) Odonata

b). Write important characteristics of order Diptera oronder Thysanoptera.

a). Write important characteristics of Apterygota?

b). Briefly explain about Ross theory of insect evolution.

a). Write the general morphology of an insect head.

b). Discuss the role of juvenile hormone (JH) and ecdysteroids in female reproduction in insects.

10.a) Diagrammatically discuss the skeleto muscular organization of the abdominal segments.

b). Discuss the eclosion indefectious and adecficous pupae.

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MZOE 004 (January 2026 - July 2026) - ENGLISH

ASSIGNMENT

(Tutor Marked Assignment)

Course Code: MZOE-004

Assignment Code: MZOE-004/TMA/2026

Maximum Marks: 100

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

1. a). Describe the morphological adaptations of Apterygota to their specific habitats. How do they thrive in environments such as leaf litter, soil, and caves etc.?

b). Write about the characters of order Dermaptera, and Embioptera.

2. Write the distinguishing characters of three economically important suborders of Hemiptera.

3. Give the outline classification of division Endopterygota with all its orders and suborders alongwith suitable examples.

4. Discuss ant foraging strategies, trophallaxis, and defence mechanisms in ants.

5. Explain the structure of insect cuticle with suitable diagrams.

6. With the help of neat labelled diagram describe different types of mouthparts found in insects. Give examples.

7. Explain variations in thoracic segmentation across different insect taxa.

8. Give a comprehensive note of different types of legs, their modifications and function in insects.

9. a). What are spermatodesms? How are they formed in Orthoptera and Odonata?

b). Describe the process of ovulation in insects and its significance in reproduction.

10. Explain the hormonal control and regulation of insect development by JH, PTTH and ecdysone hormone.

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