IGNOU MZO 007 SOLVED ASSIGNMENT

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MZO 007 2025 - English

ASSIGNMENT

Course Code: MZO-007

Assignment Code: MZO-007/TMA/2025

Maximum Marks: 100

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

1. a) Describe the four fundamental characteristics shared by all ecosystems, including appropriate examples for each.

b) Distinguish between Gross Primary Productivity, Net Primary Productivity and Net Community Production.

2. Describe the nitrogen cycle in detail, outlining its main reservoirs, key processes (nitrogen fixation, assimilation, ammonification, nitrification, and denitrification), and the impact of human activities on its natural balance.

3. Explain how biodiversity, species distribution, ecosystem functioning, and sensitive biomes like coral reefs, rainforests, and tundra are affected by climate change in both terrestrial and marine biomes.

4. a) Explain the ecological significance of mortality, life tables, age structure, sex ratio, and population increase (both exponential and logistic) using appropriate examples.

b) Describe how mortality works in population ecology. Using examples, distinguish between realised (ecological) mortality and minimum (potential) mortality.

5. Explain the difference between density-dependent and density-independent factors regulating population growth. Discuss their types (biotic and abiotic) with suitable examples, and highlight how these factors can interact to influence population dynamics.

6. Explain the Lotka-Volterra, Functional Response, and Numerical Response models of prey-predator interactions, highlighting their аззитptions, equations, and ecological applications.

7. Explain the contribution of biodiversity to medicine and industry. Illustrate your answer with suitable examples of medicinal plants, animal-based medicinal uses, micro-organisms, and industrial raw materials derived from biodiversity.

8. a) Discuss the significance of the Traditional Knowledge Digital Library (TKDL) in safeguarding India's traditional knowledge systems.

b) Explain the concepts of population bottleneck and founder effect, highlighting their impact on genetic diversity with suitable examples from plants and animals.

9. Explain the concepts of dose, threshold dose, and LD50 in toxicology. Differentiate between acute and chronic effects of toxicants with appropriate examples.

10. Define biodegradation and bioremediation. Discuss with suitable examples how persistent organic pollutants (POPs), polymers, heavy metals, and pesticides are degraded or transformed through these processes.

MZO 007 (January 2026 - July 2026) - ENGLISH

ASSIGNMENT

(Tutor Marked Assignment)

Course Code: MZO-007

Assignment Code: MZO-007/TMA/2026

Maximum Marks: 100

Note: Attempt all questions. The mark for each question is indicated against it.

1. Define trophic levels and compare upright/inverted pyramids of numbers, biomass, and energy with ecosystem examples.

2. Describe the nitrogen cycle in detail, outlining its main reservoirs, key processes (nitrogen fixation, assimilation, ammonification, nitrification, and denitrification), and the impact of human activities on its natural balance.

3. Discuss mortality, life tables, age structure, sex ratio, and exponential/logistic population growth concepts, highlighting ecological significance with examples.

4. Explain density-dependent vs. density-independent factors regulating population growth, their biotic/abiotic types with examples, and their interactions influencing population dynamics.

5. Discuss the role of genetic diversity in species survival/adaptation and evaluate why conserving few populations fails to preserve overall genetic diversity.

6. Discuss the different approaches to biodiversity conservation with suitable examples. Critically evaluate their advantages and limitations.

7. Explain the concepts of dose, threshold dose, and LD50 in toxicology. Differentiate between acute and chronic effects of toxicants with appropriate examples.

8. Discuss pesticide waste management methods, explaining roles, advantages, and risks of containment, incineration, and stabilisation techniques.

9. Describe how industrial and sewage wastewater harms the environment and human health, including the types of wastes, their hazards, and effects on soil, water, and ecosystems.

10. Describe the following:

a) Aquatic biomes

b) Survivorship

c) Shannon-Wiener index

d) Bioindicators

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IGNOU solved assignments are a set of questions or tasks that students must complete and submit to their respective study centers. The solved assignments are provided by IGNOU Academy and must be completed by the students themselves.

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

 

 

 

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