pollinium वाक्य
उदाहरण वाक्य
मोबाइल
- The caudicle then bends and the pollinium is moved forwards and downwards.
- When such a bee visits another flower, this flower gets pollinated by the sticky pollinium.
- When the bee visits another flower, the flower is pollinated by the adhering pollinium on the bee.
- The pollinia are superposed on a stipe ( a cellular pollinium stalk ), which is held by a viscid disc.
- A pollinium is a waxy mass of pollen grains held together by the glue-like alkaloid viscin, containing both cellulosic strands and mucopolysaccharides.
- While leaving the flower, it pulls the pollinium out of the anther, as it is connected to the viscidium by the caudicle or stipe.
- The passageway constricts after a bee has entered, and holds it there for a few minutes, allowing the glue to dry and securing the pollinium.
- When a bee lands on one of these, the disc adheres to its legs, and the pollinium is detached from the flower when the bee flies away.
- He explained the mechanism in which the pollen masses of the pollinium were connected by a bent stalk or pedicel to a sticky disc kept moist at the back of the flower.
- When the pollinator enters another flower of the same species, the pollinium has taken such position that it will stick to the stigma of the second flower, just below the rostellum, pollinating it.
- When an insect touched an " antenna " projecting from the back of the flower, this released the bent pedicel which sprang straight and fired the pollinium, sticky disc first, at the insect.
- By November, a specimen of the exotic South American " Catasetum " orchid Hooker had given to Darwin had shown its " truly marvellous " mechanism, by which it shot out a pollinium at any insect touching a part of the flower " with sticky gland always foremost ".
- He vividly illustrated how the flower ejected the pollinium with considerable force : " I touched the antenn?of C . callosum whilst holding the flower at about a yard's distance from the window, and the pollinium hit the pane of glass, and adhered to the smooth vertical surface by its adhesive disc ."
- He vividly illustrated how the flower ejected the pollinium with considerable force : " I touched the antenn?of C . callosum whilst holding the flower at about a yard's distance from the window, and the pollinium hit the pane of glass, and adhered to the smooth vertical surface by its adhesive disc ."
- However, the flower is constructed in such a way as to make the surface almost impossible to cling to, with smooth, downward-pointing hairs; the bees commonly slip and fall into the fluid in the bucket, and the only navigable route out is a narrow, constricting passage that either glues a " pollinium " ( a pollen sack ) on their body ( if the flower has not yet been visited ) or removes any pollinium that is there ( if the flower has already been visited ).
- However, the flower is constructed in such a way as to make the surface almost impossible to cling to, with smooth, downward-pointing hairs; the bees commonly slip and fall into the fluid in the bucket, and the only navigable route out is a narrow, constricting passage that either glues a " pollinium " ( a pollen sack ) on their body ( if the flower has not yet been visited ) or removes any pollinium that is there ( if the flower has already been visited ).
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