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megasporangium मीनिंग इन हिंदी
megasporangium उदाहरण वाक्य
उदाहरण वाक्य
अधिक: आगे- The megasporangium bears an unopened distal extension protruding above the multilobed integument.
- The megasporangium bears an unopened distal extension protruding above the mutlilobed integument.
- A megasporocyte inside a megasporangium or ovule undergoes meiosis, producing four megaspores.
- A megasporangium invested in protective layer called an integument is known as an ovule.
- The first seed plants, megagametophyte remains inside the megasporangium, attached to the parent plant.
- A very small slit ( micropyle ) remains, meaning that the megasporangium is still exposed to the atmosphere.
- The pollen tube elongates and pierces and grows through the megasporangium wall and delivers the sperm cells to the female gametophyte inside.
- The megagametophyte develops within the megaspore of extant seedless vascular plants and within the megasporangium in a cone or flower in seed plants.
- The vessels as found in the angiosperms, and the megasporangium is covered by three envelopes, like the ovary structure of angiosperm flowers.
- The fossil pieces of " Runcaria heinzelinii " that have been found are short branched stems that at their tips have a radially symmetrical megasporangium surrounded by a cupule.
परिभाषा
संज्ञा.- a plant structure that produces megaspores
पर्याय: macrosporangium
