Tagged Questions

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

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27 views

Rosemary room temperature at winter

I consistently read in non-scientific resources that I have to put my rosemary to low temperature (about 10°C) in winter (unless I don't want it to freeze). I googled, but I fail to find a scientific ...
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27 views

Endemic plant families on islands?

Endemism on islands is quite a common phenomenon, at least at the level of species or genera. Old continental fragments like Madagascar or New Caledonia may even harbour endemic families which went ...
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0answers
18 views

Why vivipary is not found in all mangrove plants?

An interesting characteristic feature of mangrove plants is vivipary or viviparous germination...but some notable members of the family like Heritiera sp.( there is even a mangrove forest named after ...
23
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1answer
1k views

Ripening bananas artificially: What is the biological reason

I am a resident of the tropical island of Sri Lanka, and we have a strange traditional method to ripen our bananas quickly. What we do is this: We dig a pit in earth that is enough to put the whole ...
3
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3answers
206 views

Where does crop biomass come from?

Each year, large volumes of crop are harvested from fields. Where does this biomass get replenished from?
3
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1answer
35 views

Why are the genomes of some trees so large?

For example, the current longest known genome belongs to a tree: http://motherboard.vice.com/read/the-largest-genome-ever-sequenced-belongs-to-a-tree I have heard that this could potentially be ...
2
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1answer
22 views

Does the tannin level in plants go down or up after they die? Or does the tannin level stay the same regardless?

Does the tannin level in plants go down or up after they die? Or does the tannin level stay the same regardless? As they decay, do they release more tannins or does the production stop?
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0answers
28 views

Biological age of grafted plants

Suppose you graft a piece of an existing 'old' plant. Will it continue to grow having the same biological age as its parent? I.e., would it die at the same time as its parent? Or would the process of ...
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0answers
12 views

what is the role of ctab in plant dna extraction [duplicate]

i get good results for dna extraction by using ctab method but i doesn't have that proper information for role/function of ctab and other chemical. Anyone know, please briefly explain ......
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0answers
24 views

Is it possible to simulate the effects of high altitudes for plants?

Note- I considered asking this on gardening.stackexchange.com but i believe it is better suited for this site since it deals with more complicated material. As I understand it, certain plants ...
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0answers
41 views

What houseplant is this? [closed]

What houseplant is this on the photo? The plant is living in Russia. What conditions are the best for it? What is the best place in the room? How often should I water it?
3
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1answer
35 views

What does the root “phyllum” mean used botanical binomial nomenclature

I often encounter the root "phyllum" in bionomial names in botany, but I've had trouble finding an actual definition for this root in any Latin dictionary outside of its taxonomic meaning. From ...
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2answers
61 views

What kind of technology is required for plant seed DNA printing? [closed]

I'm a programmer so I have little knowledge in the field of biology. However I have an interest in plants, GMOs and DNA (in terms of programming). So, I want to know what kind of technology is ...
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0answers
8 views

Does using fertiliser reduce the energy required for active transport in plants, for the ion in question

Apologies if this belongs in the chemistry stack exchange. I was just wondering if it did, as carrier proteins require energy to get a particular ion into the plant.But does it take more energy in ...
2
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0answers
18 views

How many cells are there in an apical meristem?

How many cells are there in the apical meristematic tissue? Looking at this picture... I would tend to think that there are few hundreds (maybe only a hundred) cells in the meristem tissue. But I ...
1
vote
1answer
283 views

Do plants absorb toxins from the soil?

Consider a plant like Aloe Vera that grows up in a toxic environment where the concentration of pesticides, and materials like lead, mercury, cadmium, arsenic etc is very high(e.g. Marshland dumping ...
2
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1answer
38 views

The biology behind tree pruning and hedge trimming

I read two contradictory arguments which both seem logical to me, related to the tree pruning and hedge trimming: You should prune/cut trees only outside the growing season, when the tree is ...
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0answers
33 views

Visualizing GFP in transgenic rice seeds?

I want to express GFP in rice as a method for differentiating transgenic from non transgenic rice seeds. I want to know if I can visualize them using a hand held UV lamp as the GFP I will be using has ...
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1answer
67 views

Evolution, What would the first plants have been like?

I am curious what the first plants are thought to have been like, what they may have evolved from, and how much earlier (or later) than animals they are thought to have moved to land, if they even ...
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0answers
9 views

Fe(II) and Fe(III) transport from rhizosphere across plasmamembrane

Does the graminaceous plants have passive uptake of Fe(II) via a passive Fe(II)-transporter enzyme? Or it it only dicots and non-graminaceous plants that have the Fe(II)-transporter enzyme? Also, can ...
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0answers
14 views

Which trees/shrubs provide most food for wildlife in northeastern US?

Let's say I have an opportunity to plant a couple trees or shrubs in my backyard that is adjacent to a small 20 acre area of woodland surrounded by urban development. There are animals like rabbits, ...
4
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2answers
227 views

What determines the autumn leaf color?

It is autumn out there. Green, brown, red, yellow, and mixed-colored leaves drop from the trees to the ground. What determines the colors of the leaves? Wikipedia tells me Leaf senescence is the ...
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0answers
56 views

Suggestions of famous experiments with plant cells? [closed]

I am looking for examples of famous experiments with plant cells. Ideally, the experiment would use: bright-field microscopy staining include several compared groups, so that e.g. one-factor ...
2
votes
1answer
31 views

Somatic Mutations in meristem tissue in plants

In angiosperm, in which layer of the meristem does a new mitotic mutation occurring has chance to be found in a pollen grain or in an ovule? I also welcome some insights about non-angiosperm plants.
3
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0answers
23 views

Receptors for red and far-red light in plants: Shade avoidance

Franklin (2009) describes how plants use the ratio of the red wavelength (660-670nm) over the far-red wavelength (725-735nm) (R:FR) in order to avoid shading. My question is: which receptor is ...
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0answers
40 views

Grow plants in relative darkness [closed]

Having a room in my apartment with no windows and therefore no direct light, I wonder if some plant species would grow happily in there. Any ideas? Some answers can be found in plants that lives in ...
0
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0answers
27 views

what are the best candidate trees for desert reforestation projects?

The trees would be selected for their ability to withstand rough arid condition ( use less water or finding it deep, resist to high temperature ) to produce the maximum biomass and regenerate the ...
0
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1answer
16 views

Among xerophyte plants, which one grow faster and consume water the least?

In an effort to select for the most suitable plants to possibly colonise desert and stop its expansion, what would be the xerophyte plants that grow the faster and expand on surface, while using the ...
3
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2answers
33 views

recolonize earth desert with plants : which plants first?

if willing to recolonize earth desert , let's say sahara or any dehydrated and sterile land, without intensive human intervention, what would be the first plants / algae / fungi /bacteria to grow ? ...
3
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0answers
31 views

How does Pothos grow in only water?

The popular potted plant, Pothos aureus (or Epipremnum aureum) is happy to grow in a jar, with only water, for years. How is this possible when other plants need at least Nitrogen, Phosphorus and ...
4
votes
1answer
73 views

Why can't a Corn have 13 rows of seeds?

Every time before eating a corn, I count its lines. I would always find 12 or 14 rows of seeds but never 13. Is there any biological/scientific reason behind this?
3
votes
1answer
65 views

Help identify this awesome climbing plant with velcro like stem

I got this plant sprouting in my window box this spring. Starting from a single seed, it has grown into an impressive array of branching climbing vines, reaching 6 feet tall. The stem turned red as it ...
1
vote
1answer
69 views

Difference between thylakoids and lamellae in a chloroplast?

I'm slightly confused as to the difference between thylakoids and lamellae. My understanding was that thylakoids are 'discs' that are stacked into grana and there is a membrane between the grana ...
2
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0answers
33 views

Why Hasn't my Cactus Grown Deadly Spines?

I recently purchased a small cactus plant from my local store for about $5. I've been giving the cactus lots of sunlight and a good watering every week. I've noticed that since I bought it, the ...
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0answers
29 views

Gymnosperm Spores and Seeds

In gymnosperms, what is the difference between spores and seeds? My textbook does not explain it clearly. Are seeds released during reproduction or are the spores released during reproduction? In the ...
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1answer
45 views

What is this vinca like vine?

What is this vinca like vine? Is it poisonous? 62521 USA Illinois
2
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1answer
83 views

Species identification, tree from Ecuador

This tree is recently photographed in Quito, Ecuador. It grows everywhere. I'm new to South American flora, so I'd like to know what the species it is?
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0answers
19 views

What should be the distance between plant promoter and gene?

I am trying to clone a rice gene under a different endogenous rice promoter.I will be cloning the CDS of the rice gene.So I wanted to know what is the minimum or maximum distance I should put between ...
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1answer
31 views

How long does it take for commercial fertilizers to break down? [closed]

Sometimes we buy carrots that are abit bitter, it's the taste of fertilzer. Once i put a tomato in the fridge, and when i ate it, it was bitter like shweppes, and i figured that was fertilizer also. ...
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2answers
29 views

Rhizosphere vs. Endorhiza?

In microbiology and the naming of the various areas of the plant as it relates to microbial inhabitance, I am confused as to the difference between the terms endorhiza and rhizosphere. In this case I ...
2
votes
1answer
30 views

Sansevieria species specification needed

What are the botanical differences between the species S. parva and S. senegambica? Please highlight the main ones. I have 2 groups of plants. One with label "Sansevieria dooneri" (a synonym of S. ...
3
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2answers
32 views

Is the water transpired by plants pure H₂O, or does it contain trace minerals?

I'm considering the idea of drinking water that I trap from what is transpired by trees. Interestingly, is this water a fairly (or maybe even extraordinarily) pure form of H₂O, a remarkably pure ...
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1answer
46 views

Why do pine stands exist?

I live in the midwestern United States. I cycle to work, sometimes on heavily wooded roads, and I can't help but notice that in most places within the surrounding deciduous forests Pine and evergreen ...
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1answer
38 views

What is the name of this big plant with a purple trunk and green to purple berries? [duplicate]

I have photographed the following plant in our garden in Pittsburgh, PA. Do you know the name of the plant?
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1answer
25 views

Pollinator mating system in orchids

I came across three terms in an article on pseudocopulation. However I don't quite understand what it means. They are: 1) solitary and haplodiploid 2) social and haplodiploid 3) diploid These ...
5
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2answers
49 views

What is the name of this plant with many purple blooms with orange inner parts?

I have photographed the following plant in Pittsburgh, PA. It has many blooms and every bloom is very small (about 5mm diameter), purple on the outer and orange in the inner. You can see it here: ...
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0answers
67 views

Genetically modified Klebsiella Planticola nearly bulldozers plant life as we know it?

The article "The Bacterium That (Almost) Ate the World" by Elaine Ingham (see also here or here) describes a genetically modified bacterium that would break down cellulose plant matter into alcohol: ...
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0answers
13 views

Potential evapotranspiration constant for trees in the area of London

I am trying to find the ET0 (Potential evapotranspiration) under the climate conditions of London (UK) and Coimbra (Portugal) for each month. From what I understand these data is available in the ...
3
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2answers
87 views

Convergent evolution of fruits

Many fruits are not homologous, originating from different parts of a plant. Yet they all have similar properties: Ripe fruits all have yellow to dark red color They all have a lot of water and ...