The study of plant life; e.g. angiosperms, gymnosperms, bryophytes, pteridophytes, and algae.

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2
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1answer
113 views

Which tree's root can grow the longest?

In a recent TV documentary it was said that a particular tree root could grow miles long. However, I forgot the name of the tree and I don't remember the name of the TV program as well. I searched ...
6
votes
1answer
361 views

Can someone identify this plant?

Can someone identify this plant? It was growing under my 2 year old's climbing wall / play house thing. I live in West Virginia, USA and it's currently June 3rd (if that helps from a climate ...
2
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1answer
169 views

Vegetable Cellulose

I'm a pharmacy student working on my thesis. I just want to ask the probable sources of vegetable cellulose found in vegetable capsule? Note: I'm referring to the capsule itself not for its possible ...
2
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0answers
44 views

Book-recommendation: plant biophysics [closed]

I'm a physicist by training am looking to learn more about the biophysics of plants. Can you give me your recommendation of good resources on plant biophysics? Books are preferred.
3
votes
1answer
236 views

Are corn kernels considered a grain

I have seen corn described as a seed, a grain and a fruit. What are the kernels or a corncob considered to be? A grain, a seed or a fruit?
0
votes
2answers
426 views

What is Meriva Phytosome Curcumin?

What is Meriva Phytosome Curcumin other than being a food supplement? Is it a plant? A type of plant extract? I googled it but still couldn't figure out exactly what it is. The reason I'm asking is ...
2
votes
2answers
395 views

What is “theae folium”?

I wanted to buy black tea at a pharmacy and the pharmacist told me that russian tea is actually black tea so I bought it instead.It's made out of theae folium leaves and for some reason I can't find ...
5
votes
1answer
589 views

What is this Tree?

What is this plant? Location: Bangalore, India
8
votes
2answers
383 views

What's the name of this flower?

I photographed this flower in Central Europe. I looked in online databases but can't really identify the actual flower, since there are so many that look quite similar. Can you help me? What's the ...
0
votes
0answers
48 views

Solidification of coconut water

At first, the coconut is filled with liquid endosperm. Later when it ripens, the outer layers form brown fibrous covering, and the inner solid layer turns brown and hardens. Within that, a white layer ...
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0answers
26 views

planting conifers in a sagebrush area [closed]

I'm looking at buying some property in the picture below. You can see the conifers (mainly Jefferson Pine and Lodgepole Pine) as the dark green dots on the outside frame. The intersecting line (top to ...
5
votes
1answer
237 views

What is the trigger of pollen tube formation when the pollen is on the stigma?

What is the mechanism of pollen tube formation when the pollen is close to the stigma ? Is it because of chemotaxis? In other words, is the growth triggered by some chemical substance that is ...
5
votes
2answers
133 views

If the haploid prothallium of a fern fertilizes itself into a diploid sporophyte, does this make all ferns clones?

From what I understand in the alternation of generations in ferns, mature spores germinate into a haploid prothallium. But how does this gametophyte produce recombinant gametes if it itself develops ...
3
votes
1answer
79 views

What are the mechanistics of stinging nettles?

There is a lot of research on why nettle extracts causes skin irritation and a stinging sensation. However, I cannot find information on how the extract is injected in human skin. Similarly, I haven't ...
3
votes
0answers
150 views

Pits and Pores in Vascular Tissue

What purpose is served by the pits and pores in xylem and phloem cells? I cant find what purpose that these components serve in the vascular tissues in plants
9
votes
1answer
388 views

Are flowers / flowering plants vital to all life on Earth?

Not a biology student so forgive me if this is a very basic question. Are flowering plants (angiosperms) vital to all (or most) life on Earth? In other words, if flowering plants disappeared, would ...
0
votes
3answers
81 views

how to find accurately the closest species to my plant species?

I'm working on some bioinformatic analysis of a non-model woody plant within the family with least information. So, I'm looking for a closest species to my plant. Any suggestion would be highly ...
3
votes
1answer
2k views

Why are there more stomatal openings on the lower surface of a dicot leaf?

This causes more transpiration to occur from lower leaf surface. What's the exact reason for why are there more stomatal openings on the lower surface of a dicot leaf?
0
votes
1answer
57 views

Without help of Insects, can plants & trees bear fruits & flowers? [closed]

Without help of Insects, can plants & trees bear fruits & flowers?
3
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0answers
105 views

Is the number of stamens always 9 for geranium?

We are studing in class the reproduction of plants. We start the lesson by observing some components of flowers, it was the Géranium. First of all we start counting the number of sepals , petals and ...
3
votes
1answer
78 views

Identification of a plant (in a pot)

I have in my flat a plant which sometime make strange flowers. When the start it looks like plastic stars: Then the flowers are opening after few days and looks like this: The smell is a bit ...
1
vote
0answers
39 views

Why is translocation of food in the phloem still a debate?

I currently take tertiary-high school biology and I am taught that translocation of food in the phloem occurs by the pressure flow hypothesis. I would like to ask why it is still a hypothesis, and ...
11
votes
1answer
141 views

Biostatistics: Pollen dispersal directionality

What Information am I looking for? Think about a tree that is sending pollen all over the place. Because of wind, most pollen grain will go toward one direction. Imagine, we split the 2D area around ...
1
vote
1answer
76 views

Alder Tree Root Nodule Origins?

I recently found out that alder trees have root nodules which contain nitrogen-fixing bacteria and that alders are primary colonizers in primary succession. That leads me to this question: since there ...
2
votes
1answer
73 views

Does breathing air containing 3% carbon dioxide gives you a headache?

As far as I know, breathing air containing relatively high levels of CO2 may get you a headache. I also know that CO2 level in the fruit bodies of peppers can reach levels as high as 3% at certain ...
4
votes
1answer
77 views

Why do plants produce so many hybrids as a kingdom?

Why do plants produce so many hybrids? I have read that they are the largest kingdom of organisms to do so. Does this have something to do with polyploidy events?
0
votes
2answers
66 views

Hopeful Monsters in Plants? [closed]

Does anyone know of any research/examples on Hopeful Monsters in Plants? I define Hopeful Monsters as organisms of a species that have macroevolutions to prompt new speciations. These ...
6
votes
2answers
158 views

What is the mechanism behind plants losing their leaves? [duplicate]

Do plants that lose their leaves (i.e., deciduous plants) do so because of external conditions (e.g., drought, cold), or because of an internal process? Another way of looking at it: if you take a ...
3
votes
3answers
567 views

Why are there no trees in Texas?

In Texas, there is lot of grassland and many cotton fields, which need a great deal of water. However, I have not seen any forests or areas with many trees. Why are there no forests or heavily-treed ...
3
votes
3answers
642 views

What is the difference between meristem and bud?

Keep reading both terms quite frequently while studying plant physiology. I did some research trying to establish their differences and I learnt that meristems are undifferentiated cells that can ...
2
votes
1answer
76 views

Which sources can I use to study botany and horticulture?

I refer with this question to those among you who have a strong background and work in fields like: botanics, horticulture, dendrology, etc. I would like to start building a solid preparation, both ...
5
votes
1answer
567 views

Why do apples taste sweeter at the bottom?

Sometimes when eating an apple, I notice that the bottom (blossom) end of the apple has a lot more sweetness and flavour to it, whereas the top half (stem) is often more watery, crispier and feels ...
9
votes
1answer
658 views

What is this pink-flowering plant found in Shanghai, China in March?

This plant appears to have fleshy protrusions resembling flowers growing out of its stem (although I am unable to identify them as such). Does anyone know the identity of these plants?
4
votes
2answers
122 views

Evolution theory - roses spikes - being more bulgy doesn't give you advantage

I've seen spike, huge spike. And I thought that development of such spikes could be contrary to the evolution theory. Being „little more” spiky doesn’t give you any advantage... So those ...
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vote
0answers
32 views

Location of embryo development in angiosperms

What floral organ does the development of the embryos of angiosperms occurs in? Is it the ovary? The pollen tube grows down through the style and double fertilization occurs and the embryo begins to ...
10
votes
3answers
738 views

Why are fruits so large compared to their seeds?

Why do many plants produce such large fruits(apples and strawberries,for example) if those contain only relatively small seeds?
2
votes
0answers
33 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. ...
2
votes
1answer
270 views

Relationship between leaf structure and Photosynthesis rate

We can see numerous leaf structures in plant kingdom. As the leaves are designed for photosynthesis, their structure must be a factor for any optimization in photosynthesis or chlorophyll distribution....
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vote
0answers
69 views

Why is amyloplast produced by some plant cells but not other cells?

For example I know it is produced in Potato's and fruits and its purpose is to synthesize glucose in to starch through polymerization. But why is it only present in some cells? Is it only present in ...
3
votes
1answer
258 views

How much pollen is needed to pollinate a flower?

Assuming 100% of the pollen gets delivered to exactly the locations it needs to pollinate a female flower, how much pollen is needed to pollinate a flower? If it's more than one unit of pollen, what, ...
2
votes
1answer
143 views

Why do Lapidaria margaretae look like stones?

Previous Research I stumbled across a trending reddit post "Lapidaria margaretae looks like stones" (as of 3rd Februrary 2015); but I could not find discussions as to reasons behind why. Question/s ...
3
votes
1answer
24 views

Can virus resistance be acquired through generational exposure?

If I have a squash plant that has a mosaic virus of some kind, and I breed its descendants (via seed) for generations, each with exposure to the same virus, will future generations be likely to ...
1
vote
0answers
108 views

Common properties of herbs in creating anaphrodisiac effect?

Recently came across Wiki article about anaphrodisiac herbs and other products. An anaphrodisiac (also antaphrodisiac or antiaphrodisiac) is something that quells or blunts the libido. It is the ...
2
votes
0answers
43 views

why plants cannot use atmospheric nitrogen? [duplicate]

Earth's atmosphere constitutes 78% of Nitrogen, then why do plants need to absorb Nitrogen from the soil. Why couldn't it possible for them to absorb the atmospheric Nitrogen like they do in the case ...
3
votes
1answer
135 views

What's the (or some of the) minimum(s) amount of atmospheric carbon dioxide needed by plants?

We currently have a problem of increasing CO2 in the atmosphere. But assuming we find a way to carbon sink it, what is the minimum CO2 we need to leave in the atmosphere to provide a source for ...
1
vote
0answers
73 views

What are the white spots?

What are these white spots? It's like Braille writing or something. How is the appearance encoded in the plant? (which I think is a Pine, though I am not sure).
19
votes
2answers
2k views

Is any known plant magnetic?

Is there a plant (not a microscopic type but one that is visible to the naked eye) that has so much iron (or magnetite), cobalt, or nickel in its body that it can attract a magnet? In this case "...
5
votes
1answer
68 views

Total dark deprivation at day-neutral plants

First of all, I am not a biologist. Almost for a week, a question has come to my mind: "Is it harmful ceaselessly exposing a plant to light?" (I mean with natural & artificial light with ...
2
votes
1answer
138 views

Do all sources supply all sinks on a plant?

Sources include any exporting organs, typically mature leaves, that are capable of producing photosynthete in excess of their own needs. Sinks include any nonphotosynthetic organs of the plant ...
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0answers
661 views

Why do plants produce so much more sugar than they use?

I recently asked the question, "Do plants need O2 to consume energy they've stored via sugar?" to which @canadianer responded, "Yes, plants require oxygen to generate ATP from sugar. However, they ...