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Questions tagged [botany]

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

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Can two half-cut potatoes fuse back together?

If I cut a potato in half, then I hold the two parts together, will the two halves fuse back into a single potato?
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What software is a better choice for the forest plant transcriptome annotation?

What software is a better choice for the forest plant transcriptome annotation? I have tried TRAPID, Prokka, BLAST services, RAST (not working for the plant transcriptomes). Did not try DFAST and PGPA....
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1answer
10 views

Difference between vacuolar and symplast pathway

what is the difference between the two? is symplast pathway does not take into account the vacuole to vacuole movement?
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8 views

What is the difference between pits and perforations in xylem?

What is the difference between pits and perforations in tracheids and vessel elements? Based on the diagram in this website, are they both simply holes? If so aren't pits and perforations (or pores) ...
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solute potential of guard cells in stomata increases with glucose but not with starch

In sugar starch theory and potassium ion inflow theory the solute or osmotic potential increases with glucose, in guard cells but not with starch why? The same case is with malic acid i-e the solute ...
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13 views

How exactly is the sunflower seed pattern calculated?

I came across this https://www.mathsisfun.com/numbers/nature-golden-ratio-fibonacci.html and the rotation simulator just below the first section says to type in a number for each rotation. But, it ...
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14 views

Why Populus Nigra does not grow in Israel?

What are the obstacles for Populus Nigra? It, especially the pyramidalis (Italian) variety is considered quite Southern plant in Russia.
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24 views

What does the word specific epithet mean? [duplicate]

Is the species for Rosa indica and Mangifera indica 'indica' as you can see is the same in both. What does this signify. It is obvious that it has different species as they have different genus.
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Is callus totipotent or pluripotent?

Is callus (in the context of plant tissue culture) totipotent or pluripotent? As I understand, the difference between totipotency and pluripotency is an ability to differentiate into extraembryonic ...
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What is difference between light harvesting complex , reaction centre and photosystem

my book says light harvesting Complex are made up of hundred of pigment molecule bound to protein. Is photosystem has all the pigment (except one molecule of chlorophyll A )forming light harvesting ...
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7 views

How does salt content affect flowering of halophyte?

My teacher told me that one adaptation of halophyte is that they flower at specific time e.g. rainy season to reduce salt exposure (as salt content affects flowering of plant thus affect the ...
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Ficus benjamina variegated has all white leaves on a branch [migrated]

One of my ficus developped an almost fully white branch with leaves. I found about "starlight ficus" which are similar but have more green on their leaves and bark. Is it common? What keywords can I ...
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1answer
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Do unique communities of bacteria form inside water storage in plants?

I assume that plants, like animals, have an ability to fight off bacteria that invade their cells (support: here and here. However, water often harbors quite a bit of bacteria in even unsuspecting ...
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How does water stress lead to alkalinity of xylem sap in plants?

I was reading this book: Plant Physiology and Development, Sixth Edition by Lincoln Taiz, Eduardo Zeiger, Ian M. Møller, and Angus Murphy when this doubt came to my mind. Abscisic acid, the stress ...
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21 views

Science behind plant craft with message

I recently found a company that produces plant crafts, containing words written in the plant, which remains after its germination. I tried to contact the company, but I did not get an answer so far. ...
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1answer
33 views

What is the biological name of this plant?

The plant was observed in a rural area near Digha.
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1answer
108 views

Why aren't leaves black?

I s'pose this is a variant of the age-old question, "Why are leaves green?" It's fairly easy to ask teh internets and find plenty of answers for that one. I have a different but related question: ...
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1answer
13 views

Need help with these invasive vines damaging trees causing tree limbs to break

Various vines growing and girdling trees...need some help tp identify.
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Veins in Plant Leaves (terminology)

Why do we call the vascular bundles in plant leaves "veins"? I think its probably because the xylem and pholem serve circulatory function analogous to the human body's circulatory system with arteries ...
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Pre-linnaean names, where can I ask about current IDs?

I run a large website with lots of historical herb books. For the older ones, finding out current botanical names is very difficult. Can I ask here? If not, does anybody know where I could ask what ...
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1answer
32 views

Is this plant lantana camara? If not what is it?

I was in a botanical garden recently and wasn't able to find the tag on this plant. The diameter of the entire flower tended to be around 5cm. Google seems to suggest its lantana camara but I'm not ...
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41 views

Berries ID - Can someone help us identify this plant?

Found it in the hilly areas of Meghalaya - a state of India. Not sure if is edible or not, we haven't tried it but it gives a beautiful blue color when used for dying. The seeds are big and there ...
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1answer
23 views

How to promote acorn maturation

I have acorns from an oak tree. They look like: but I would like to speed up their maturation so they split and I can separate the caps: How can I speed up this maturation process?
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1answer
44 views

Why is “VOLVOX” not considered to be in PROTOZA?

Volovox is an Algae, but it moves with the help of Flagella. Protozoa has members that move by Flagella. Why is Volovox taxonomically in the Algae instead of Protozoa?
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25 views

Can Tajima's D and other population genetic tools be used to copare Arabidopsis ecotypes?

I am currently investigating 2 genes in Arabidopsis taliana that are a product of a recent duplication even (observable from synteny and phylogenetic analysis). In addition to the molecular and ...
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0answers
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Looking for realistic representation of angiosperm sperm cells during pollination

I've scoured Youtube, google, and a handful of my botany textbooks for a cellular-scale photo, animation, or video illustrating an angiosperm sperm cell during pollination/fertilization. ...
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1answer
37 views

Do green algae form obligate symbioses with fungi?

I understand that obligate symbioses means that the two organisms cannot live without each other and are in a symbiotic relationship, but do green algae from this with fungi?
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Is the allopolyploid cotton a fixed heterozygote?

I have been reading some scientific papers (with dubious comprehension of the material) about cotton. They say cotton is a allopolyploid and that it is thought to result from a genome doubling of a ...
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1answer
41 views

ID large-thorned plant growing in Turkey

Can anyone identify this plant which is growing in a friend's garden in the Uzumlu area of Turkey. It has very large spikes/thorns. I'm told it doesn't have flowers or seeds so we are wondering how it ...
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1answer
27 views

What is an accessible book about plant evolution for a non-biologist? [closed]

I have an acquaintance interested in learning about the evolution history of plants. This person has a wide knowledge on botanics, from personal reading and taking care of plants, but E is neither a ...
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1answer
33 views

How to tell petiole apart from stem?

How to tell petiole apart from stem? Is it by the rule that there is usually a pair of stipules at the base of a petiole?
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0answers
52 views

What species is this aromatic plant found in a mountainous region of Greece?

This plant was found in the Taygetos mountains, Greece, and had a lemony smell. Small plant about a foot high. The shiny recurved leaves are reminiscent of rosemary, and the dry seed-heads seem ...
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0answers
10 views

Is there a citrus variety whose main consumed part is flavedo rather than pulp or albedo?

In oranges, lemons, limes, mandarins, pomelo, grapefruits the main consumed part is pulp. In citron it is albedo. Kumkwat is eaten entirely but still the main part is pulp, I think. Is there a ...
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0answers
34 views

How does heat stress kill plants?

It is known that many plants typically die when exposed to temperatures of 40 to 50°C (I believe, these figures relate to exposure times of ~1–2 hours). When a plant is heated, what is the mode of ...
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Are small peppers inside others twins?

This happens frequently enough that we've probably all seen it at some point - you buy a pepper, and when you cut it open you find another small pepper inside it. There's plenty of pictures out there ...
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1answer
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plant dormancy in different locations

Say plant x has a dormancy period of y in location z, for instance in Sweden. We bring this plant to another location z', say France. Are there any results with respect to if/how the dormancy period ...
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45 views

Is this some kind of moss?

Found this on the branch of a fruit tree. It is tiny and orange in colour.
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1answer
51 views

Is dandelion a sporophyte or gametophyte?

My text book claims all land plants undergo alternation of generation. However, I don't see how it could be with dandelion. The flower head gets pollinated and then turn back on itself. After a while ...
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0answers
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Is evolution of gametangia in land plants and charophyceae convergent?

Is the presence of gametangia in both land plants and charophyceae a result of convergent evolution or are they of the same origin (and have been lost in other types of algea)?
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1answer
53 views

Are the seeds in a single capsicum fruit genetically identical?

Hopefully not a too-basic question for the venue. I'm a chile pepper growing hobbyist and have spent some time searching around and reading up on pepper (angiosperm) reproduction, but I'm not getting ...
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3answers
99 views

Why does photosynthesis occur even in blue light when the photocentres are activated in red light

From Engelmann's experiment Engelmann used this device to illuminate a strand of Cladophora (not Spirogyra) with light from the visible spectrum, exposing different sections to different ...
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Garden plant in south of France

When visiting the south of France (around St Tropez) I had a plant in the garden which I initially mistook for mint but the aroma of the leaves (when rubbed) was distinctly different (I cannot put a ...
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1answer
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Hominidae is to hominid as Poaceae is to what?

I considered asking this on English.SE, but decided against it, since it strictly applies to biological nomenclature, which not many of them will know about - particularly that of plants. So, in ...
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45 views

Identify plant from genus *Solanum*

This spring we have recieved from a local Botanical garden in Southern Germany a pack of seeds with the label "surprise". We could grow one plant from the seeds, the seeds looked like "pepper" = ...
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0answers
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What type of wildflower is this?

I live in Utah and I'm wanting to plant some Utah native plants in my backyard. There is this wildflower everywhere in the mountains of Utah and I really want to know the name. It looks like some sort ...
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0answers
36 views

Why does a lightsource postpone the time it takes for the leaves falling from a birch?

It is autumn and the leaves have already left their trees on all birch and other trees that has leaves, except one. This birch has a spotlight pointed to the tree and it is on 24/7. I have recognized ...
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0answers
18 views

How does peanut pollination work?

I got curious about peanuts and when I found some photos on the internet, I could see they have flowers. However peanut fruit is underground. How does pollination of peanut flowers affect the fruit ...
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1answer
88 views

Is pith a ground tissue with no specialized function?

Here is a question from the book My Max Score SAT Biology E/M Subject Test (where the SAT is the exam taken by American high school students): Ground tissue with no specialized function A. Xylem ...
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Hypanthial disc

Can anyone illustrate what the hypanthial disc is? It is descriped throughout the key to Rosa in the Flora of North America. I think that I understand that the hypanthium is the hip which is formed ...
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0answers
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Why plant tissues end in -enchyma?

Many plant tissue types end in the affix -enchyma. Etymology: enkhyma "infusion," from en- "in" + khein "to pour" Examples are parenchyma, collenchyma, and sclerenchyma (meaning "to pour beside," ...