A cotyledon (/kÉtÉ¨ËliËdÉn/ ; seed leaf from Greek: ÎºÎ¿ÏÏÎ»Î·Î´ÏÎ½ kotylÄdÅn, gen.: ÎºÎ¿ÏÏÎ»Î·Î´ÏÎ½Î¿Ï kotylÄdonos, from ÎºÎ¿ÏÏÎ»Î· kotÃ½lÄ cup, bowl) is a significant part of the embryo within the seed of a plant.he cotyledons contain (or in the case of gymnosperms and monocotyledons, have access to) the stored food reserves of the seed. As these reserves are used up, the cotyledons may turn green and begin photosynthesis, or may wither as the first true leaves take over food production for the seedling.
A habitat (which is Latin for it inhabits) is an ecological or environmental area that is inhabited by a particular animal or plant species.
habitat. n. 1. (Biology) the environment in which an animal or plant normally lives or grows. 2. (Sociology) the place in which a person, group, class, etc, is normally found.[C18: from Latin: it inhabits, from habitÄre to dwell, from habÄre to have].. 1. a. The natural environment in which a species or group of species lives: good coyote habitat; managing wildlife habitat. b. A particular kind of natural environment: woodland and prairie habitats.