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Pollen is a powdery substance produced by most types of flowers of seed plants for the purpose of sexual reproduction. It consists of pollen grains (highly reduced microgametophytes), which produce male gametes (sperm cells).
Products, Structure and formation & Allergy to pollen
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plants grains grain called also species cells hay flower may allergies sperm tube anemophilous two male plant fever process allergy
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Pollen | is a | powdery substance produced by most types of flowers of seed plants for the purpose of sexual reproduction | 0.90 | text |
| Pollen | is a | important source of food for several species | 0.90 | text |
| reticulate | instance of | Various terms also describe the sculpturing | 0.80 | text |
| a net like appearance consisting of elements | instance of | Various terms also describe the sculpturing | 0.80 | text |
| uniaperturate | instance of | Terms | 0.80 | text |
| triaperturate refer to the number of apertures present | instance of | Terms | 0.80 | text |
| oak | instance of | more irritating species of ragweed gained a foothold and Arizona lost its claim of freedom from hay fever.Anemophilous spring blooming plants | 0.80 | text |
| birch | instance of | more irritating species of ragweed gained a foothold and Arizona lost its claim of freedom from hay fever.Anemophilous spring blooming plants | 0.80 | text |
| hickory | instance of | more irritating species of ragweed gained a foothold and Arizona lost its claim of freedom from hay fever.Anemophilous spring blooming plants | 0.80 | text |
| pecan | instance of | more irritating species of ragweed gained a foothold and Arizona lost its claim of freedom from hay fever.Anemophilous spring blooming plants | 0.80 | text |
| and early summer grasses may also induce pollen allergies | instance of | more irritating species of ragweed gained a foothold and Arizona lost its claim of freedom from hay fever.Anemophilous spring blooming plants | 0.80 | text |
| ragweed.The most efficient way to handle a pollen allergy is by preventing contact with the material | instance of | exacerbated by the introduction of new species | 0.80 | text |
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