Abeka Biology Chapter 1 Review fully solved exam study guide (100% accurate expert solutions)download to pass

The nitrogen cycle is essential to life on earth because plants, animals, and humans require nitrogen Biology the study of life Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:00 / 0:00 Full screen Organism` living things Habitat region where a particular organism normally lives Botany study of plants Zoology study of animals Woody Plant plant that produces wood Herbaceous plant non woody plant Angiosperm plant with flowers that produce seeds covered by fruit Disk flower one of the flowers in the center of a composite flower head Ray flower one of the petal-like flowers arranged around thee edge of a composite flower head Legume plant of the pea family Nitrogen fixing bacteria bacteria that grows on roots of legumes and convert nitrogen in the air into ammonia and nitrates Denitrifying bacteria bacteria in the soil that converts unused nitrates back into atmospheric nitrogen Nitrifying bacteria bacteria that provide nitrates to the soil from decomposing plants and animals Dicot has 2 cotyledon per seed Monocot plant with only 1 cotyledon; usually has fibrous root systems cereals types of grass used by man for food; the grain or such a plant What is considered as one of the most important group of plants on Earth? grass Three most important cereal crops wheat, corn, and rice Forage grasses types of grass used to feed livestock Turf grasses grasses used as coverings for lawn, athletic fields, golf courses, & playground Stolon creeping stem that grows above the ground and produces new plants; also called runner Sheath bottom portion of a grass leaf which wraps around the stem Hardwood another term for a broad leaf tree Deciduous trees that lose its leaves each fall Catkins long, tassel-like cluster formed by the flowers of some trees Bract leaf that looks like a flower petal Three broad divisions of biology botany, physiology, and zoology The importance of plants Man depends totally on plants, directly or indirectly; plant and plant product are also essential in medicine and industry Annuals Complete their entire cycle in one growing season Biennials Complete their life cycle in two growing seasons Perennials Grow from year to year and bloom each season Three major families of angiosperms Lily, Palm, Amaryllis The tree family that includes oaks and chestnuts Beech family What is the purpose of flowers? To reproduce after their kind What is the purpose of leaves? To manufacture food for the plant through photosynthesis What is the purpose of stems? Holding up the plants leaves and flowers What is the purpose of the roots? To anchor the plant to the soil, absorb water and minerals, and store the food