Compare and contrast unicellular and multicellular microorganisms… - Vidyadip

Question

Compare and contrast unicellular and multicellular microorganisms with examples and structural differences.

✓

Answer

Microorganisms can be either unicellular or multicellular. Unicellular microorganisms consist of a single cell that performs all life functions. Examples include bacteria, yeast, and protozoa. These organisms are microscopic and reproduce rapidly. For example, yeast is a unicellular fungus that carries out fermentation and has a well-defined nucleus and cytoplasm.

On the other hand, multicellular microorganisms are made of many cells with division of labor, meaning different cells perform specific tasks. Examples include moulds and algae like Spirogyra. Multicellular microbes often form visible colonies or structures such as filaments. Moulds, for instance, produce thread¬like structures called hyphae that help in reproduction and nutrient absorption.
Structurally, unicellular organisms often have a simpler body plan. Some, like bacteria, lack a true nucleus (prokaryotic), whereas fungi and protozoa are eukaryotic with defined nuclei. Multicellular microbes are always eukaryotic and can grow larger and survive in more complex environments. This structural difference also affects how they reproduce, respond to stimuli, and interact with the environment.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "as requested in detail. [5 marks ]" from The Invisible Living World: Beyond Our Naked Eye→The Invisible Living World: Beyond Our Naked Eye — all question types→Science STD 8 question papers→Gujarat Board STD 8 question papers→Gujarat Board question paper generator→

Similar questions

Discuss the role of micro-organisms in sustainable development, including food, fuel, and waste manage¬ment.

Define the different types of forces.

Describe the male reproductive organs with the help of a labelled diagram.

What do you mean by reproduction? Describe various modes of reproduction.

Mention any three ways through which pathogens are transmitted.

What would happen if the size of the Earth were too small or too big?

What is mass? How is it measured?

How is the energy useful to us? Explain.

(1) What is a cyclone?
(2) Describe in detail the formation of a cyclone. Give a suitable diagram to explain the phenomenon.
(3) When does a cyclone lose its strength?

Represent diagrammatically the changes in the arrangement of particles as ice melts and transforms into water vapour.