BIOLOGY - UNIT 4: CELL DIVISION AND REPRODUCTION

colony

A group of organisms attached to one another after undergoing asexual reproduction from a common parent.

multiple fission

A kind of asexual reproduction in which a single cell undergoes many mitotic divisions in the nucleus and a number of daughter cells are produced all at once.

budding

A kind of asexual reproduction involving the growth of a new individual from part of an older organism. It can also refer to uneven distribution of cells that results in one cell receiving most of cell contents. In grafting, budding involves reducing the scion to a singular bud.

protist

A one- or few-celled organism with chromosomes. Many have characteristics of both animals and plants.

regeneration

A phenomenon in which organisms break into two or more parts and then each part grows into a new individual.

spore

A small, resistant cell that can grow into a new organism. They may be produced either by meiosis or mitosis.

conidia

A special kind of asexual spore found in many kinds of fungi.

unicellular

One-celled.

propagation

The act of propagating or establishing and growing new plants.

central disk

The central portion of a starfish. The arms of a starfish radiate from the central disk.