Biology

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the study of living things.

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biology

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living things.

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organisms

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regions where particular organisms normally live.

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habitants

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the study of plants.

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botany

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the study of animals.

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zoology

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the study of the physical structure and function.

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anatomy

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study of the human body.

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physiology

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referred to be nonwoody plants.

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herbatious

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can be either woody or herbaceous.

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vine

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one in which the main root grows straight down and remains larger than the secondary roots that branch off from it.

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taproot system

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one of the largest families of angiosperms.

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composite

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a cluster of many separate flowers.

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head

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the ones in the center of the head.

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disk flowers

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arranged around the disk flowers.

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ray flowers

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members of the pea family are commonly referred.

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legumes.

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the three most common poisonous plants.

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chashew family

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the seed of an angiosperm plant contains special structures.

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ctyledons

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are amoung the most important groups of flowering seed plants.

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graminoids

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members of the pea family are commonly referred.

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legumes

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protein can use only nitrogen that has been combined into special compounds of nitrogen and oxygen.

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nitrates

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growing on the roots of legumes convert the nitrogen from ammonia into nitrates, and the plant absorbs these nitrates through its roots to convert to proteins.

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nitrogen-fixing bacteria

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provide nitrates to the soil from decomposing plants and animals, and lightning produces small amounts of nitrates in the soil from nitrogen in the air.

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nitrifying bacteria

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the movement of nitrogen from the air, into the soil, and back into the air.

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nitrogen cycle

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in the soil convert unused nitrates back into atmospheric nitrogen to complete the nitrogen cycle.

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denitrifying bacteria

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the three most common poisonous plants in this family.

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cashew family

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the seed of an angiosperm plant contains special structures.

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cotyledons

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the most important group of plants on earth.

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grasses

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those grassed that are used as covering for lawns.

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turf grasses

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a creeping stem that grows above the ground.

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stolon

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the leaves of grass plants.

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sheath

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is high in starch content, making it an excellent source of energy for people and animals.

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grains

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trees may live for hundreds and even thousands of years and continue to grow throughout their lives.

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perennials

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the majority of broadleaf trees have dense, hard wood.

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hardwoods

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have broad, flat leaves and hard wood, most broadleaf trees in temperate regions.

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deciduous

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retain their leaves throughout the winter.

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evergreen trees

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the leaves of a tree form its bushy head called.

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crown

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flowers-in-disguise

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catkins