Introduction to Botany |
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Introduction to Botany Joseph y 1851-1917 Bergen,Otis W 1869-1947 Caldwell No preview available - 2016 |
Common terms and phrases
alga algæ angiosperms animals antheridium anthers apple archegonium asexual spores bacteria bark bean botany branches buds Bulletin carpel cells chlorophyll cluster common corn corolla cotyledons crops cultivated decay developed dicotyledonous disease embryo sac endosperm epidermis ferns fertilization fibrovascular bundles flowering plants flowers forest formed fruit fungi germination grape grasses green grow grown growth gymnosperms hybrid hyphæ hypocotyl inclosed insects kinds of plants known layer leaf leaves lichen live magnified means mildew mold monocotyledons moss oöspore organs ovary ovule parasites photosynthesis pine pistil plant breeding plant food pollen grains pollen tube portion potato produce proteins protonema regions reproduction root hairs seed plants seedling self-pollination shown soil sometimes species spermatophytes sporangia sporangium spores sporophylls stalk stamens starch stem stigma structure substances sugar supply surface thallophytes tion tissue trees twig U.S. Dept usually varieties wall weeds wheat wood young
Popular passages
Page 342 - Strobilus. A cone-like cluster of sporophylls. Style. The usually attenuated portion of the pistil which bears the stigma. Succulent. Thick and fleshy.. Suspensor. A chain of cells which develops early from the oospore, and serves to push the embryo cell deep within the embryo sac. Symbiont. One of the organisms that has entered into a symbiotic relationship. Symbiosis (living together). Applied to a condition in which two or more organisms are living in an intimate relationship. Sympetalous. Having...
Page 259 - The fibrovascular bundles extend by branches into the green leaflets, where they are recognized as the veins of the leaf. By removing the leaf surface (epidermis) and examining with a microscope its structure may be seen. It consists of a single layer of cells whose irregular walls fit into one another quite closely. In the lower epidermis, rarely in the upper, are the stomata. By means of a transverse section of a leaflet (Fig. 231) the other leaf tissues are seen to be (1) the veins, which appear...
Page 337 - The fibrovascular bundles from the leaf which blend within the stem with its fibrovascular cylinder. Lenticel. A round, oval, or lens-shaped opening on the exterior surface of the bark. Leucoplast (white molded). A minute colorless body within a cell. When exposed to light, leucoplasts may develop into chloroplasts. Liana. A climbing plant. Ligule (a small tongue). In grasses a thin appendage at the junction of leaf blade and sheath. Medullary. Relating to the pith ; medullary rays are the pith rays...
Page 329 - CO2) is thus broken up, there will be two H, one O, one C, and two O (or in all three O). After photosynthesis has been going on for some time, starch is usually formed. Starch consists of (C6H,0O5) "n". This means that six parts of carbon, ten parts of hydrogen, and five parts of oxygen unite to form starch, and the "n" means that the unit C6H10O5 does not appear singly, but that an unknown number of them are united.
Page 148 - Different Forms of Flowers on Plants of the Same Species, D. Appleton & Co., New York (1896).