because theres sexual intercouse my brother
A parallel relationship with something, like pollen and allergy, dog and barking, wind and storm.
the pollen tube
The Pollen filter is between the fan and the engine.
The germinated pollen grain is empty of the male gamete nucleus.
It is more like a crop & not considered a resource.
Yes because the pollen then will later produce more and provide which is considered reproduction in term.
cross pollination
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Microscopic differences in shape and size.
It would be considered heterogenous. If you were to look closely at the air with a light source present the pollen particles become a lot more evident. Only a mixture of gasses in this case would be considered homogenous because there is only one substance front as opposed to the clearly defined surface of a pollen grain.
Non-vascular plants such as mosses and ferns have Spores. Pollen - Flowering, vascular plants (angiosperms)
In cross pollination there is wastage of pollen grains , but in self pollination there is no wastage of pollen grains.