Micro final practical - Colony shape

Punctiform

Tiny, pin-point dots

Circular

A perfect round circle.

Filamentous

Look like "roots" or hair-like strands spreading out.

Irregular

No defined symmetry; looks like a blob

Rhizoid

Branched growth, similar to a plant root system.

Spindle

Tapered at both ends.

Flat

Flush with the agar.

Raised

Slightly elevated with a flat top.

Convex

Domed or curved outward.

Pulvinate

Very high dome, extremely convex.

Umbonate

Has a "knob" or raised center (looks like a fried egg).

Entire

Smooth and even all the way around.

Undulate

Wavy edge

Lobate

Deep waves or "lobes".

Erose

Jagged or serrated like a steak knife.

Curled

Hairy or thread-like edges.

Coccus

Spherical balls

Bacillus

Rods.

Spirillum

Rigid spirals

Vibrio

Comma-shaped or curved rods

Spirochete

Flexible, corkscrew-like spirals.

Diplo

Pairs of cells (e.g., Diplococci).

Strepto

Chains of cells (e.g., Streptobacilli).

Staphylo

Irregular, grape-like clusters (only for Cocci).

Tetrads

Groups of four forming a square.

Sarcina

A cube of eight cells.

Palisades

Rods lined up side-by-side like a fence.