Elementary Biology: Plant, Animal, HumanMacmillan Company, 1912 - 593 páginas |
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Página 46
... inches in diameter . ) Each piece should then be split into halves and each surface planed and sandpapered . These pieces are valuable as permanent preparations . 1. Which of the three regions ( bark , wood 46 PLANT BIOLOGY.
... inches in diameter . ) Each piece should then be split into halves and each surface planed and sandpapered . These pieces are valuable as permanent preparations . 1. Which of the three regions ( bark , wood 46 PLANT BIOLOGY.
Página 47
... regions ( bark , wood , and pith ) found in the young stem can you readily distinguish ? Which of the three becomes very much thicker and harder as the stem grows older ? Which is very small in quan- tity when compared with the young ...
... regions ( bark , wood , and pith ) found in the young stem can you readily distinguish ? Which of the three becomes very much thicker and harder as the stem grows older ? Which is very small in quan- tity when compared with the young ...
Página 57
... region of the leaf is known as mesophyll ( Greek , meso middle + phullon leaf ) . Describe the mesophyll , stating how it differs from the epi- dermis . = = 3. Look carefully for veins in the mesophyll . their appearance . Describe 4 ...
... region of the leaf is known as mesophyll ( Greek , meso middle + phullon leaf ) . Describe the mesophyll , stating how it differs from the epi- dermis . = = 3. Look carefully for veins in the mesophyll . their appearance . Describe 4 ...
Página 59
... regions of the root and stem is sap carried up to the leaves ? 69. Is water vapor given off by the leaves of a green plant ? -Laboratory Study No. 37. Demonstration . 1. Wrap sheet rubber or thin oilcloth about a pot containing a ...
... regions of the root and stem is sap carried up to the leaves ? 69. Is water vapor given off by the leaves of a green plant ? -Laboratory Study No. 37. Demonstration . 1. Wrap sheet rubber or thin oilcloth about a pot containing a ...
Página 80
... region ? B. Stamens . 1. Observe the stamens arranged around the pistil . Carefully separate them with a needle or pin . State the number and situation of the stamens . 2. Carefully bend two or more stamens away from the pistil , and ...
... region ? B. Stamens . 1. Observe the stamens arranged around the pistil . Carefully separate them with a needle or pin . State the number and situation of the stamens . 2. Carefully bend two or more stamens away from the pistil , and ...
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Elementary Biology, Plant, Animal, Human James Edward Peabody,Arthur Ellsworth Hunt Vista completa - 1912 |
Términos y frases comunes
abdomen adaptations alcohol animals arteries bacteria bees biology birds blood body bones bottle breathing butterfly called capillaries carbon dioxid cavity cells chlorophyll color composed compound corn cotyledons covered crayfish crops Describe develop digestion dishes egg-cell eggs embryo energy epidermis experiment Fehling's solution fertilized filaments fins fish floral envelopes flowers food substances frog fruit gill glass grain grape sugar growth head inches insects intestine jaws kinds known Label Laboratory Study larvæ layer leaf leaves legs lime water liquid living lungs malaria material membrane microscope mosquito moth mouth muscles nucleus nutrients Optional organs outer ovary ovule oxidation oxygen pairs paramecium piece pistil plants pollen produced protein protoplasm region roots salmon seedling seeds side soil sperm-cells spores stamens starch stem stoma stomach structure surface teeth test tube thistle tube tiny tion tissue trees veins wall wings
Pasajes populares
Página 163 - 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 161 - 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 161 - 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 fibers the molecules are counting it, registering and storing it up to be used against him when the next temptation comes. Nothing we ever do is, in strict scientific literalness, wiped out. Of course, this has its good side as well as its bad one. As we become permanent drunkards by so many separate drinks, so we become saints in the moral, and authorities and experts...
Página 24 - 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 161 - 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 nerve cells and fibers the molecules are counting it, registering and storing it up to be used against him when the next temptation comes.
Página 91 - 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 163 - 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 162 - 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 76 - 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.
Página 161 - There is a story, which is credible enough, though it may not be true, of a practical joker, who, seeing a discharged veteran carrying home his dinner, suddenly called out, 'Attention!' whereupon the man instantly brought his hands down, and lost his mutton and potatoes in the gutter. The drill had been thorough, and its effects had become embodied in the man's nervous structure...