pollen tube वाक्य
उदाहरण वाक्य
मोबाइल
- A pollen tube is produced, which grows into the nucellus to provide nutrients for the developing sperm cells.
- Plants that are self-sterile often inhibit the pollen grains from their own flowers from growing pollen tubes.
- The presence of multiple grains of pollen has been observed to stimulate quicker pollen tube growth in some plants.
- Stigma have been shown to assist in the rehydration of pollen and in promoting germination of the pollen tube.
- In this example, pollen tube incompatibility and slower generative mitosis have been implicated in the post-pollination isolation mechanism.
- The pollen tube elongates and pierces and grows through the megasporangium wall and delivers the sperm cells to the female gametophyte inside.
- In oaks, early fertilized ovules prevent the fertilization of other ovules by inhibiting the pollen tube entry into the embryo sac.
- Thus, kin recognition at the level of the pollen tube apparently leads to post-pollination selection to avoid inbreeding depression.
- Exo-PGs play a role in enabling pollen tube elongation since pectin rearrangement is necessary for the growth of pollen tubes.
- Exo-PGs play a role in enabling pollen tube elongation since pectin rearrangement is necessary for the growth of pollen tubes.
- Tip growth is a process that has many similarities in diverse walled cells such as pollen tubes, root hairs, and hyphae.
- In the flower, the pollen tube then grows towards the ovule where it discharges the sperm produced in the pollen grain for fertilization.
- It has been suggested that the pollen expression of pectate lyase genes might relate to a requirement for pectin degradation during pollen tube growth.
- Use of these devices may aid our understanding pollen tube guidance and the mechanism of sexual reproduction in " A . thaliana ."
- The vegetative cell then produces the pollen tube, a tubular protrusion from the pollen grain, which carries the sperm cells within its cytoplasm.
- An example of chemo-tropic movement can be seen during the growth of the pollen tube, where growth is always towards the ovules.
- Fertilization of flowers by pollen is achieved because the ovary releases chemicals that produce a positive chemo-tropic response from the developing pollen tube.
- No style exists, but a broad stigmatic crest along the margin allows pollen tubes access along the surface and between hairs at the margins.
- When a pollen grain makes contact with the female stigma, the pollen grain forms a pollen tube that grows down the style into the ovary.
- The main donors to the pathway were the genes associated with the arbuscular mycorrhiza symbiosis genes, the pollen tube formation genes and the haemoglobin genes.
pollen tube sentences in Hindi. What are the example sentences for pollen tube? pollen tube English meaning, translation, pronunciation, synonyms and example sentences are provided by Hindlish.com.