Cotyledon. Definition. noun, plural: cotyledons. (1) (botany) The primary or rudimentary leaf of the embryo of a seed plant that either remains in the seed or emerges upon seed germination; a modified leaf that is part of the plant embryo within the seed; a seed leaf.otyledon. Definition. noun, plural: cotyledons. (1) (botany) The primary or rudimentary leaf of the embryo of a seed plant that either remains in the seed or emerges upon seed germination; a modified leaf that is part of the plant embryo within the seed; a seed leaf.
noun, plural: habitats. (1) Place where an organism or a biological population normally lives or occurs. (2) The location or environment where an organism (or a thing) is most likely to be found, e.g. the body part of the host of a parasite as in the scalp of the host is the habitat of a head louse.
A habitat is an ecological or environmental area that is inhabited by human, a particular species of animal, plant, or other type of organism. A place where a living thing lives is its habitat.It is a place where it can find food, shelter, protection and mates for reproduction.It is the natural environment in which an organism lives, or the physical environment that surrounds a species population. habitat is not necessarily a geographic areaâfor a parasitic organism it is the body of its host, part of the host's body such as the digestive tract, or a cell within the host's body.