S.N Flagella S.N Pili 1. These are helical structures but are not straight. 1. These are non-helical structures but are straight. 2. These are long whip like filamentous structures. 2. These are short hair like, filamentous, and tubular microfibers. 3. Comparatively thicker than pili. 3. Comparatively thinner than flagella. 4. Diameter of flagella is 10-30 … Read more
S.N Pili S.N Fimbriae 1. These are fine hair-like microfibers. 1. These are tiny bristle-like fibers. 2. These are longer than fimbriae. 2. These are shorter than fimbriae. 3. These are less in number. 3. … Read more
Yeast is a unicellular fungus which varies in shape with the species and even within the species. They may be oval, spherical and elliptical in shape. They are microscopic and appear as a pinhead under the high power of microscope. They mostly grow on media rich in sugar such as juice of grapes, sugarcane, toddy, … Read more
The word Protozoa is derived from two Greek words: protos means first; zoon means animal. They are the first animals with a protoplasmic grade of body organization. They are simple, unicellular microscopic organisms which may be solitary or colonial. All the vital activities are performed by a single cell so no physiological divison of labour … Read more
S.N Unicellular organisms Multicellular organisms 1. Made up of single cell. Made up of several cells. 2. There is no division of labour. There is division of labour. 3. Comparatively larger in size. Smaller in size. 4. Unable to exhibit wide range of different functions. More efficient and carries out a number of activities. 5. … Read more
First animals, solitary or colonial and protoplasmic grade of organization. Simple, unicellular microscopic organisms. Generally free living found in fresh water, salt water and damp soil. Some are parasitic and commensal. Body is naked or covered by pellicle, exoskeleton or internal skeleton may be present in some forms. Locomotory organs are pseudopodia, whip-like flagella and … Read more