Questions tagged [flowering]
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10
questions
0
votes
2answers
90 views
How do bees help flowering trees survive?
I have often heard a vague claim that bees help flowering tree populations survive.
As far as I know, bees take nectar and pollen concentrations from the flowers of flowering trees and use at least ...
1
vote
0answers
13 views
Why do some trees flower year round, others only once
Depending on latitude, rains, and pollinator behavior, etc. some trees flower only once a year such as oak trees, others twice (such as pipe organ cati as a response to pollinating bats) and yet ...
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1answer
62 views
Flower/Plant Identification
Could anyone please identify this flower/plant found on the semi-shaded banks of a river in East Ireland? It was located near Japanese Knotweed and looks quite similar to this.
8
votes
1answer
516 views
Rosette formation: in which order are leafs created
From the picture below, it seems that new leaves are formed something like this (if you imagine the plant as a regular, 12 hour clock):
new leaf at 12 o'clock, then at 7 o'clock, then at 2 o'clock, ...
1
vote
1answer
47 views
0
votes
1answer
107 views
short-day facultative plant, abrupt change to photo period
What happens biologically to a short-day facultative plant that is a few weeks into its short day (flowering) photo period and is suddenly given a 24 hour period of light? Does anything change ...
18
votes
2answers
7k views
Why do pink rain lilies flower only after rains, and not from being watered?
We have pink rain lilies (Zephyranthes carinata) in the garden. In my personal experience, I've found that they always flower, without exception, shortly after rains. However, there are roughly ten ...
5
votes
2answers
2k views
Where is pollenkitt secreted?
Where is the pollenkitt material secreted? I think the tapetum would be a good candidate, since it provides nutrition to the pollen grains.
1
vote
2answers
153 views
Do you know of ways that help a plant to produce more flowers?
In Crocus sativus, or saffron crocus, the most commercially important part is the stigma of flowers. Each plant produces one flower (so there is more than one plant in this picture) and each flower ...
2
votes
0answers
47 views
Is (are) there any crucial gene(s) for the formation of flower in flowering plants? [closed]
I am interested in qualitative (flowers of some plants have petal or sepal, but some plants have not) and quantitative (number of flowers of plants) differences between flowers of different plants.
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