Nectar replenishment in flowers

[laetoli]

Do plants constantly replenish the nectar and/or pollen in their flowers? Perhaps it's species dependent. I notice some flowers stay open for quite a long time with bees and other feeders visting long after the flower first opened.
Thanks,
Paul

[Dorts]

Nectar is a sugary liquid which is found in a part of the flower called nectaries; these are usually found at the base of flower and is there to attract pollinating animals such as many different kinds of insects, birds and even bats in some countries.

Although it varies in different species, nectar is a great food source and contains sugars, proteins, vitamins, minerals and oils to name a few.

Nectar continues to be available until the flower is fertilised when the nectar then starts to dry-up.

Pollen, which is found on the anthers is the male part of the flower and comes as small 'grains'.
A set amout is available, varying depending on the species and is not replenished if eaten.
Dorts.

[laetoli]

Thanks Dorts. My question was, does the nectar & pollen get replenished? I ask this because I see bees etc. visiting and revisiting flowers so do the first visitors fail to drain the source or does the plant make more of it?
Best wishes,
Paul

[Dorts]

Originally Posted by laetoli

Thanks Dorts. My question was, does the nectar & pollen get replenished? I ask this because I see bees etc. visiting and revisiting flowers so do the first visitors fail to drain the source or does the plant make more of it?
Best wishes,
Paul

I'm sorry if my answer was not clear.
Nectar is continually produced, (by a gland) until fertilisation takes place when production stops.
Pollen is not replenished.
Dorts.

[laetoli]

Thanks Dorts. Sorry I failed to read your reply properly. Long day or something.
All the best,
Paul

[b0mbus]

Comfrey (Symphytum officinale) refills with nectar every 45 mintues, apparently.