Elementary Biology, Plant, Animal, HumanMacmillan, 1912 - 593 páginas |
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Página 28
... wall and the nucleus constitute the cell - body . Describe the loca- tion and the appearance of the cell - body . 4. Make a drawing of three or four adjacent cells , several times as large as they appear under the microscope . Label ...
... wall and the nucleus constitute the cell - body . Describe the loca- tion and the appearance of the cell - body . 4. Make a drawing of three or four adjacent cells , several times as large as they appear under the microscope . Label ...
Página 29
... wall which is composed of a lifeless substance known as cellulose . This wall is often so transparent that we can look through it and see the cell - body and nucleus within ( Fig . 6 ) . protoplasm of cell - body cell - nucleus .. The ...
... wall which is composed of a lifeless substance known as cellulose . This wall is often so transparent that we can look through it and see the cell - body and nucleus within ( Fig . 6 ) . protoplasm of cell - body cell - nucleus .. The ...
Página 30
... wall may be missing , so that in such a case there is no resemblance to a cell or box . Biologists now understand a cell to be a bit of protoplasm ( cell - body ) con- taining a nucleus ( which is a denser portion of the protoplasm ) ...
... wall may be missing , so that in such a case there is no resemblance to a cell or box . Biologists now understand a cell to be a bit of protoplasm ( cell - body ) con- taining a nucleus ( which is a denser portion of the protoplasm ) ...
Página 31
... walls are formed between the two cells ( Fig . 7 ) . Thus are produced two cells , each having its own nucleus , and these in turn as- similate , grow , and divide . In this way the number of cells increases with the growth of the plant ...
... walls are formed between the two cells ( Fig . 7 ) . Thus are produced two cells , each having its own nucleus , and these in turn as- similate , grow , and divide . In this way the number of cells increases with the growth of the plant ...
Página 33
... walls ) ? Laboratory Study No. 22 . — 1. Give in your own words a description of the way thistle tube No. 1 was prepared , making a diagram of the apparatus , and labeling level of water in bottle . and of grape sugar solution in ...
... walls ) ? Laboratory Study No. 22 . — 1. Give in your own words a description of the way thistle tube No. 1 was prepared , making a diagram of the apparatus , and labeling level of water in bottle . and of grape sugar solution in ...
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Elementary Biology: Plant, Animal, Human James Edward Peabody,Arthur Ellsworth Hunt Vista completa - 1912 |
Términos y frases comunes
alcohol animals anther arteries bacteria bark bean bees biology birds blood body bones bottle butterfly called carbon dioxid cavity cells chemical chemical elements chlorophyll color composed compound corn grain cotyledons covered crops cross-pollination Describe develop digestion egg-cell eggs embryo energy epidermis experiment Fehling's solution fertilized fish floral envelopes flowers food substances frog fruit functions germination gill glass grape sugar green growth hydrogen inches insects intestine kinds known Label Laboratory Study larvæ layer leaf leaves legs lime water liquid living lungs malaria material membrane microscope mineral matters mosquito moths mouth nucleus nutrients Optional organs outer ovary ovule oxidation oxygen pansy petal piece pistil plants pollen grains preparation produced protein protoplasm region root-hairs roots seedling seeds soil soil-water spores stamens starch stem stigma stoma stomach structure surface test tube thistle tube tiny tion trees tumbler veins wall wings
Pasajes populares
Página 169 - I suppose, have thus suffered; and if I had to live my life again, I would have made a rule to read some poetry and listen to some music at least once every week; for perhaps the parts of my brain now atrophied would thus have been kept active through use.
Página 167 - Could the young but realize how soon they will become mere walking bundles of habits, they would give more heed to their conduct while in the plastic state.
Página 36 - For they covered the face of the whole earth, so that the land was darkened; and they did eat every herb of the land, and all the fruit of the trees which the hail had left; and there remained not any green thing in the trees, or in the herbs of the field, through all the land of Egypt.
Página 167 - I won't count this time!" Well, he may not count it, and a kind Heaven may not count it; but it is being counted none the less. Down among his...
Página 168 - Let no youth have any anxiety about the upshot of his education, whatever the line of it may be. If he keep faithfully busy each hour of the working day, he may safely leave the final result to itself. He can with perfect certainty count on waking up some fine morning to find himself one of the competent ones of his generation, in whatever pursuit he may have singled out.
Página 103 - AMERICAN ORNITHOLOGISTS' UNION. An Act for the Protection of Birds and their Nests and Eggs. Section i. No person shall, within the State of- , kill or catch or have in his or her possession, living or dead, any wild bird other than a...
Página 169 - My mind seems to have become a kind of machine for grinding general laws out of large collections of facts ; but why this should have caused the atrophy of that part of the brain alone on which the higher tastes depend, I cannot conceive.
Página 167 - Well, he may not count it, and a kind Heaven may not count it; but it is being counted none the less. Down among his nerve-cells and fibres the molecules are counting it, registering and storing it up to be used against him when the next temptation comes.
Página 59 - In my opinion this exhibition of moral courage has never been surpassed in the annals of the Army of the United States.
Página 80 - The use of intoxicants by employes while on duty is prohibited. Their habitual use, or the frequenting of places where they are sold, is sufficient cause for dismissal.