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

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28 views

What houseplant is this? [on hold]

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
18 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
54 views

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

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
6 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 ...
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0answers
32 views

Accelerated tree growth [on hold]

Can someone explain to me the growth of a redwood tree after it is cut just above the ground, if that happens at all? Also if it does, what would it look like during an exponential growth spurt, but ...
2
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0answers
11 views

How many cells in 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 ...
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0answers
18 views

Minerals and water transportion in a tree [closed]

I need to explain how minerals and water are first absorbed and then transported in a tree. Include the factors that affect this.
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0answers
27 views

Transport of organics in a tree [closed]

I need to explain what happens during the transport of organics in a tree in early spring before the leaves are present.
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1answer
272 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 ...
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0answers
13 views

Cellulase Assay [closed]

I'm doing an investigation on the effect of temperature on cellulase. I have done a cellulase assay twice and it has been a failure both times. Can anyone recommend an assay that will only take ...
1
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0answers
23 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 ...
1
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0answers
29 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 ...
1
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1answer
65 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
8 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
210 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 ...
1
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0answers
53 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
20 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 ...
1
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0answers
39 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
24 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
13 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
31 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
26 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
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1answer
65 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
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1answer
59 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 ...
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0answers
39 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
31 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
25 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
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1answer
80 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
30 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
22 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
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1answer
29 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
30 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 ...
1
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1answer
45 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
37 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
22 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 ...
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2answers
47 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
63 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
10 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
80 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 ...
2
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2answers
382 views

Is dried grain dead or dormant?

Is dried grain considered dead or dormant botanically? Related to a BH-SE question.
3
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1answer
74 views

is it necessary that every theca of an angiospermic anther must contain two microsporangia

i basically don't know the procedure or sequence of steps involved in the formation of anthers but i have read it somewhere it is formed from the dedifferentiation of shoot apical meristem of the ...
1
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1answer
26 views

Is this pCAMBIA co-transformation possible?

I would like to know whether the pCAMBIA1200 and pCAMBIA0380 be used for co-transformation of rice using Agrobacterium LBA4404.They probably have the same ori site so they belong to the same ...
2
votes
1answer
47 views

Leaves not liked by herbivores

I at times have many goats grazing in our locality. Recently a few cows were seen too. I just offered one of the cows a few leaves from Jasminum sambac plant growing in our garden. The cow smelled and ...
1
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1answer
63 views

Why doesn't the herbicide 2,4-D damage lawn grass?

I sometimes use 2,4-Dichlorophenoxyacetic acid to control broadleaved weeds in lawns. It is selective, and quickly kills the dicot weeds, while other plants are unharmed. 2,4-D is a synthetic auxin, ...
3
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1answer
32 views

How can a plant resist glyphosate (Roundup) herbicide?

In my area, the most common weeds that strongly resists (N-(phosphonomethyl)glycine) (glyphosate) are the horseweed, or mare's tail, Conyza canadensis, and Canada thistle, Cirsium arvense There are ...
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0answers
18 views

Why doesn't Fenoxaprop-P-ethyl damage cool season lawns?

For controlling bermudagrass, Cynodon dactylon, a serious perennial grassy lawn weed in my area, I use the herbicide Fenoxaprop-P-ethyl. It kills the bermudagrass rather well, without damaging the ...