Questions tagged [botany]
The study of plants and plant life.
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Identifying a plant in the botanical garden of Paris
I went to the botanical garden in the "Jardin des Plantes" in Paris. In a glasshouse with the name "Serre de l'histoire des plantes" on the natural history of plants (exhibiting ...
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Stages of leaf drop in trees [migrated]
A red maple that is over 10 years old, but less than 20 in the Mid-Atlantic region of U.S.A. has dropped some leaves. I did not see any change in the leaf color before these leaves started dropping. ...
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Explanation behind the observed chloroplasts in Elodea during Hypotonic vs Isotonic Solution
Me and my colleagues put the elodea leaf in distilled (hypotonic) and tap water (isotonic). We observed under the microscope that the elodea under the hypotonic solution became elongated and turgid, ...
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Plants taxonomy: priority of names published in the same year
Article 11.3 of the International Code of Nomenclature for algae, fungi, and plants states that the earliest valid name with the same rank has the priority.
The question is: if two names (or more...) ...
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High value weed or plant that can replace the chemical treatment of pesticides and herbicides?
I'm working on a project that aims to replace (at least lower) the use of chemical pesticides and herbicides in farming with the use of high value weeds and plants that can naturally replace the ...
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What is the relation between Transpiration and Physiological support in plants
According to my information,When transpiration increases, The amount of water lost from the plant's leaves increases.So,Shall i assume That the relation is inverse according to this condition,or shall ...
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Why don't water cuttings die of root asphyxia?
Root asphyxia happens when there is not enough oxygen available for the roots, for example when the soil is clogged with water.
However it is common to do water cuttings where roots directly develop ...
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Vine has simple and compound leaves
What kind of plant is this?
Some leaves are compound (leaves of three). Other leaves are simple.
Located in an urban garden in the shade; east of Toronto, Ontario, Canada (July 30, 2023).
Woody ...
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Is this plant in my urban garden poison ivy? [duplicate]
Is this plant in my urban garden poison ivy?
Toronto, Ontario area.
July 19, 2023
Full shade
Three leaves; toothed but not serrated.
Possible Answer: (I can’t post an answer due to the question ...
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How is the fate of endosperm decided?
I was studying about the post-fertilization events in angiosperms and I came to know that in most dicotyledons, the endosperm is completely consumed and in most monocotyledons, the endosperm is not ...
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Why do pollen grains tend to remain in the 2 celled stage in most angiosperms?
In over 60% of angiosperms, pollen grains are shed off at 2-celled stage (Vegetative cell and a generative cell) and in the other 40% it is shed off at 3-celled stage (Vegetative cell and 2 male ...
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optimal spatial arrangement (distribution) of plants
Microalgae are organisms that can grow in aquatic environments and use light and carbon dioxide (CO2) to create biomass. Research showed that Microalgae's biomass can be used as a bio-fertilizer.
My ...
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Database or model for plant nutrient requirements with respect to soil and climate?
Microalgae are organisms that can grow in aquatic environments and use light and carbon dioxide (CO2) to create biomass. Research showed that Microalgae biomass can be used as a bio-fertilizer.
My ...
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Which plants are best for experiments about plant growth? [closed]
I was assigned writing a term paper about optimizing plant growth using control systems. This assignment is part of a class on sustainable energy usage, which means it's primarily on physics and ...
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Is Acer Palmatum Diecious, Monoecious, or another variety of ecious?
I am compiling information about plants in my garden, and studying botany for interest, and was wondering if anyone knows whether Acer Palmatum (and more broadly Acers in general) are monoecious, ...
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Can plants be pathogenic towards humans?
In googling this question you’ll only find articles about plant pathogens jumping over to humans eg candida auris and pseudomonas aeruginosa.
My question is, like fungi can be infectious to humans (...
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Are there any genetically modified GMO squash with a vine growth habit which grow back from the root?
When I cut Scottish thistles with scissors, the thistle grows back from the tap root.
When I accidentally step on squash vines, the squash vine dies.
I was wondering if genetics research has produced ...
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Which kind of inflorescence(s) does Sonchus oleraceus have?
Many capitulum inflorescences, several corymb inflorescences with capitulum inflorescences as the end nodes of each corymb inflorescence, or one compound corymb inflorescence with capitulum ...
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Is it viable to make liquid potassium ferilizer through dissolving very small amounts of potassium chloride in water
I wasn't able to find fertiliser online that was simply potassium chloride and I didnt want to source my potassium chloride solution from potassium sulphate or other general NPK fertilisers for my ...
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Why is it essential to uproot a plant just before flowering in order to see nodules?
In my textbook it was written - Uproot any plant from common pulses just before flowering and you will see near spherical outgrowths on the roots .
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Leaf pictures: Which disease?
I had several plants that with same symptoms, which all eventually died within some weeks: Formation of blisters along stem (no picture) and leaf veins, that seem to pop up (assumption) and make ...
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Flora and fauna of early homo sapiens environment?
Where can I find as much detail as possible on the flora and fauna (and perhaps geological structures too) between the time of the origin of Homo Sapiens say ~300kya to their "out of Africa" ...
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Sports of western sword fern: descriptions or resources?
I found a western sword fern (Polystichum munitum) growing in a home garden that appears to be showing a sport. Notably, the sportive fronds come off the same rootstock as more normal-appearing fronds ...
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Has Darwin's abominable mystery been solved or not?
When I research Darwin's abominable mystery, the abrupt origin and rapid diversification of the flowering plants during the Cretaceous, I read different conclusions about whether it has been solve or ...
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Is there a dataset for the optimum conditions (Temperature, humidity, light intensity, etc.) for plants growth?
I'm a student working on an automated greenhouse. I wanted to add a database for the most commonly grown plants and the optimum conditions needed (I'm mainly looking for temperature, humidity, and ...
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What is the area around a plant that is under its phytochemicals/secondary metabolites influence?
Is there a dilution threshold as a function of distance or some general measure regarding the area around a plant that is under the influence of its phytochemicals?
I'm looking for a objective value ...
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How similar are polyembryonic plant siblings to each other?
I successfully germinated all the seeds I found in a Yuzu fruit. From about half of the seeds there are 2 little plants growing, like in the picture. I understand this is due to the occurence of ...
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Does cytoplasmic streaming exert a force on the cytoskeleton itself?
In plant cells, cytoplasmic streaming is though to be driven by the force generated from active transport of myosin-cargo complexes along actin highways. Does this force also act on the actin ...
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How do bees and wasps react to carnivorous plants?
I seem to recall that bees and wasps have alert pheromones, so that if a few of them are killed or attacked in the proximity of others, they will attract backup.
I assume it's pretty straightforward ...
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Do all plants have meristems?
Are there any plants that lack a meristem (at any phase in their lifecycle)?
Searching for it on the web, the materials I find seem to assume no, but none say it explicitly.
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Biological Key for Yard Weeds?
I'm tinkering with an idea for an app to identify yard weeds, just as a personal project. I've been looking for some sort of dichotomous key (ie, "Does it have fur?" "Does it have ...
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How does pollen grain lose viability?
If sporopollenin is such a resistant layer, how does pollen grain lose viability, even such easily in some cases?
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Are these microscopic star-like structures on a dead leaf some sort of organism? If so, which one?
I’m wondering what these star-shaped organisms are on a dead leaf I found in my backyard (Texas, USA). This was taken under my microscope at 40x magnification. They seem to be clear organisms with ...
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Would fewer cows mean less methane emission?
Rotting grass produces the same amount of methane as cows that digest grass (see this source). So if cows did not eat the grass, it would still emit methane. Therefore, if there were fewer cows, would ...
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Why is livestock bad for the climate?
It is always told that eating meat is bad for our climate. This is most often explained by mentioning following reasons (Source):
Methane is produced when digesting the food and also the faeces of ...
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Would a deciduous tree transplanted to summer part of the globe lose the leaves? [duplicate]
Take a deciduous tree/plant which I see here in Italy lose the leaves every autumn for the whole winter, e.g. this one.
Imagine that after Spring and Summer, I was to transpant¹ it entirely to a ...
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Help identify parasitic plant on oak seedling
See pictures below. I found five of them on a patch of oak seedlings in northern Turkey yesterday, they are about 2 centimeters in diameter and smell like grass.
Five months later:
I tried PlantNet ...
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Genetics question on recombination frequency
A space probe discovers a planet inhabited by creatures that reproduce with
the same hereditary patterns seen in humans. The phenotypic characters are
height (T=tall, t=dwarf), head antennae (A-...
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Does lower stomatal conductance of water influenced by elevated CO2 decrease overall evapotranspiration?
From what I understand, elevated CO2 levels decrease the stomatal conductance of water in plants. What I remember from irrigation sciences, higher temperatures should be more demanding on ...
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Why is it so that phloem parenchyma is absent in most monocots?
I am currently studying anatomy of flowering plants and came across this statement in my textbook:
'Phloem parenchyma is absent in most of the monocots.'
We learnt that the main function of phloem ...
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Is the offspring of two-sex plants a clone or a child?
Many common plants e.g. tomato, pepper; produce both male DNA carriers and female embrions. In the case that the plant is confined alone, do the resulting seeds carry a carbon copy of the DNA of the ...
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Do monoecious plants have bisexual flowers?
I used to think that monoecious plants have male (unisexual) flowers and female (unisexual) flowers on the same plant but on different locations. But recently I learnt that monoecious plants also have ...
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Does the current phylogenetic system classify only Algae as Thallophytes?
I am studying the current system of division of plants.
While studying Thallophytes, I came across some sources which said that Thallophytes consist of Fungi, Algae, and Lichens. Some others (https://...
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Are these black deformations normal on an unpeeled avocado seed?
Are these black deformations on an unpeeled avocado seed normal? I can't get an answer on google, and at present don't have access to any more avocados...
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Please help me identify this tree/fruit. Is it edible?
When free, could the experts here please help me identify this tree.
Location: Delhi, India
Height: 20-30 feet
Date: October
Is the hanging green colored fruit edible?
Thank you for all the kindness ...
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Why are monocots more advanced than dicots. Shouldn't more complexity mean more evolved? [duplicate]
Features like pith, endodermis, pericycle, medullary rays and secondary growth are not present in monocots. How are monocots still more advanced?
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Why do highland/alpine plants require a drop in night temperatures to thrive?
There are mountain plants which require a drop in nightly temperature (many Nepenthes, Heliamphora and orchids for example). A non-specialist explanation is that the plants die of "starvation&...
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How can Monstera plant know which leaves to split?
The monstera plant splits some leaves when they put shadow on other leaves behind it, if I understand correctly. But how can the plant know which leave is responsible for the shadowing and therefore ...
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Cedar-like conifer near Kaladar, Ontario
What species of conifer is this?
Cedar-like leaves
Rocky terrain near Kaladar, Ontario
Sept 29, 2022
Approx 15 feet tall; approx 6 inches DBH
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Conifer with red fruit
What kind of conifer is this?
Red fruit
Broad needles; not clusters
12 feet tall; north wall of apartment building
East of Toronto, Ontario
September 20, 2022
Hint: click the photos a couple of times ...
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