στο λεξικό PONS
pol·len [ˈpɒlən, αμερικ ˈpɑ:-] ΟΥΣ no pl
tube [tju:b, αμερικ esp tu:b] ΟΥΣ
1. tube:
3. tube ΒΙΟΛ οικ:
Ορολογία βιολογίας της Ernst Klett Sprachen
pollen tube ΟΥΣ
pollen tube cell ΟΥΣ
Ορολογία βιολογίας της Ernst Klett Sprachen
Ειδικό λεξιλόγιο PONS «Συγκοινωνίες»
tube βρετ ΔΗΜ ΣΥΓΚ
| I | tube |
|---|---|
| you | tube |
| he/she/it | tubes |
| we | tube |
| you | tube |
| they | tube |
| I | tubed |
|---|---|
| you | tubed |
| he/she/it | tubed |
| we | tubed |
| you | tubed |
| they | tubed |
| I | have | tubed |
|---|---|---|
| you | have | tubed |
| he/she/it | has | tubed |
| we | have | tubed |
| you | have | tubed |
| they | have | tubed |
| I | had | tubed |
|---|---|---|
| you | had | tubed |
| he/she/it | had | tubed |
| we | had | tubed |
| you | had | tubed |
| they | had | tubed |
PONS OpenDict
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An example of chemo-tropic movement can be seen during the growth of the pollen tube, where growth is always towards the ovules.
en.wikipedia.org The pollen grain then takes in moisture and begins to germinate, forming a pollen tube that extends down toward the ovary through the style.
en.wikipedia.org The pollen tube passes through the pollen grain wall by way of structures called apertures.
en.wikipedia.org Fertilization of flowers by pollen is achieved because the ovary releases chemicals that produce a positive chemo-tropic response from the developing pollen tube.
en.wikipedia.org 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.
en.wikipedia.org