Questions tagged [botany]

The study of plants and plant life.

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28 views

What is the botanical definition of a tree?

I recently saw a shared post on Facebook which states Trees - even a young child knows what a Tree is, however there is surprisingly no universally recognised precise definition of what a tree is, ...
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Tissue present and their rigidity in different parts of unripe papaya

Which simple permanent tissues (parenchyma, collenchyma, sclerenchyma) or complex permanent tissues( xylem - tracheids, vessels,xylem parenchyma, xylem fiber and phloem - phloem parenchyma, phloem ...
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video resource recommendation for studying diversity in kingdom plantae

I have studied PLANT KINGDOM from my textbook, but I am searching for animations, simulations, video playlists of nature documentaries from authentic sites and channels like Nature, Cell, Nat Geo, etc....
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Pink and white flower species ID

I found these small plants growing after the rains in July .In Bhubaneswar , India. What species is it?
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Tiny deep red flower shrub species ID

I found this plant with maple like leaves blooming after rains this july.I am in Bhubaneswar,India.
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Flowering climber species ID in Odisha

I found this pink climber on a tree , in Bhubaneswar,India. It started blooming around july .
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Can you please help me identifying these parasite (eggs?) on rose?

My aunt today saw the following objects on roses in her garden and asked what it is but nobody could tell her yet, but it seems to be some kind of parasite or some caterpillar eggs. As you can see, ...
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1answer
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Can anyone identify this seed, pit, or nut?

I found this on the recessed top of the intake manifold of my car engine. It may have been there for weeks. It was likely brought there by a rat or squirrel who was unable to chew through the outer ...
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Make plant experience 2 growing seasons per year by moving it across equator semiyearly

If I take a typical plant (such as e.g. a rosemary plant or an avocado sapling) across the equator from Florida to Brazil and back every year, so that the plant experiences Spring in both places, will ...
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Do some flowers excrete urea or uric acid?

Sometimes when I sniff a flower up close, I can't but help smelling a faint urine like odor. From my layperson's understanding, uric acid and urea both are responsible for giving urine its ...
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Why does wheat consume more water than rice that is, unlike wheat, flooded?

Why does wheat consume more water than rice that is, unlike wheat, flooded? I thought rice was the villain of the piece when it comes to water consumption.
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What is the current accepted taxonomy of the Citrus genus, and how do common cultivated fruits fit into it?

I want to learn about the taxonomy of Citrus, and how cultivated fruits fit into it. I know that the history of cultivated citrus fruits is full of hybridisation and that the taxonomic classifications ...
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What is the interchange of nutrients between plants called?

I've heard about how fungi is the nutrient super highway of the plant web. What is this interchange between plants and the fungi called?
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Can anyone identify this Australian tree?

This tree is found in the Wrights Hill area on the New South Wales/Australian Capital Territory border. Bark at breast height is curled and dense, becoming less dense at height.
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How do nodes form in plant stems?

How does a plant "decide" where a node will form in its stem? What is the difference on a cellular level between the node and the internode sections of the stem?
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Fluorescent purple flowers?

Do some flowers fluoresce? Some deep purple Lobelias and larkspurs seem to glow and confuse my eyes in sunlight. It reminds me of those blue LED Christmas lights (they come in strings with other ...
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Is it even possible to cut just the phloem from the stem of a plant?

I often see questions related to this kind of diagram: Basically, the diagram shows a that phloem is removed from the stem in the middle of the plant. Thus, the stem swells because food produced by ...
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What is causing these lichen patterns on a tree in Scotland?

I recently saw these lichens growing on a tree in Scotland. What is causing the pattern of dark lines? Are these the boundaries between individual lichens? Or could it be something to do with the ...
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Blooming at moonlight

At the moment a popular question in the physics SE community is about night-blooming cereus: this flower blooms at full moon, that is it is capable of making difference between the moonlight and ...
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Evergreen ornamental shrub identification

These images were taken in the middle of April in central Poland. Plants are between 0.5 and a meter tall, and around a meter in diameter.
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What causes the distinct color change in matured leaves in some plants?

Maybe that color change is caused by lower chlorophyll concentration in younger leaves' cells, or chlorophyll a to b ratio differs between younger and older leaves. All I could find is that the ...
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How can I learn botany/plant ID by myself?

I am interested in sources and methods regarding botany and plant ID, and being a self-taught person. Textbooks, sites etc. Thank you all in advance!
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Can Monsanto's (in)famous hybrid seed crops be cloned/grafted? If not, is there a technical or legal reason?

I understand that the seeds of a crop made from modern-day super hybrids will not, usually, produce the same quality plants in the next generation.... Therefore, farmers have to buy new hybrid seeds ...
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Sansevieria falling back to the wild form via leaf cuttings but not via micropropagation

I have heard that when you propagate Sansevieria via leaf cuttings, you get the wild form again. But if you use only meristem tissue, you can propagate the multicolored cultivated forms. What would be ...
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Variance components and heritability

I have a quantitative morphological data comprising of both growth and yield traits. In my heritability analysis, i discovered that some of the traits have negative variance component and heritability ...
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How does a diploid sporophyte form in non-recurrent apomixis?

I came across this definition of non-recurrent apomixis which occurs in angiosperms- In non-recurrent apomixis, both the egg-cell and embryo are haploid and embryo is developed directly from an egg-...
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1answer
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Different flowers have same colour

I notice that certain (wild) flowers have the same colour, although they are not closely related. For example, the yellows of the dandelion (Taraxacum) and the buttercup (Ranunculus) are, at least to ...
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What are those berry-like plants in this photo?

I found this photo on a Flickr gallery and I have no idea what this plant is. Is it supposedly a type of berry or something?
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What actually kills a plant that requires winter dormancy if it is kept indoors all year?

In bonsai practice, beginners will commonly purchase a juniper (often Juniperus procumbens 'Nana'), which is an outdoor tree, and keep it inside all year. The tree invariably dies. It is commonly ...
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Do some vascular tissue cells have chloroplast? [closed]

Vascular tissue includes xylem, phloem, parenchyma, and cambium cells. Does photosynthesis occur in some vascular tissue cells? Do some of them have chloroplast? Vascular tissues are made up of xylem ...
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Sex of fern gametophytes

The following image is from Campbell Biology, 12th edition It says, "Each gametophyte develops sperm-producing organs called antheridia and egg-producing organs called archegonia". This ...
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2answers
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Is this some form of cabbage?

I would appreciate if someone could identify this plant. It's tall, but not very difficult to pull from the ground, and it has yellow flowers in large groups. I was told it's not mustard. Is it wild ...
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1answer
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What are these needle-like plants growing in the ground?

I was outside and noticed some strange, needle-like plants growing on the ground. I managed to search for "needlegrass" but couldn't find it. Here is the photo taken on April 20, 2021 in ...
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What is this plant with yellow large fruit?

Found this in a garden in San Francisco. Can't decide if it's pomelo, capri lemon or something else, ideas?
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Species Identification and Care

We've had this plant for a while as one of two. And both have grown incredibly over the last year. We actually know very little about these beyond watering when they look a little sad and would like ...
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1answer
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What disease / parasite / fungi has affected the mango in the picture?

The mango is found to have some kind of fungi / worm on it's surface . This has affected a huge number of mangoes in the same tree . It can be described as white and fibrous / weblike structure near ...
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1answer
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Do spring varietes of cereals have a process of vernalization?

I was wondering about this question - Do spring varieties of cereals have some process of vernalization? It would be nice to have some description of the main processes' differences of spring and ...
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Can you grow a plant from a seed to flower stage with only Aeroponics system

I have recently started studying indoor farming with the help of aeroponics system. But from what I know have read (I may have misunderstood or misread something, so please excuse me for that). The ...
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Regarding secondary growth in dicotyledonous angiosperms

I had read that (and as this image shows) the secondary and primary phloem eventually get crushed due to the repeated division of cells forming the secondary xylem, during secondary growth in ...
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1answer
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What will happen if one keeps the photosynthesis plant active 24x7? [closed]

While reading this article online something said on it made me wonder. Also, there have been suggestions and a Dawn / Dusk type of ramp up and down to simulate the slow changes in the sun have value, ...
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1answer
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Why is movement of water through cell walls considered the apoplast and symplast pathway?

Why would the movement of water through cell walls be considered the apoplast and symplast pathway? I understand why it's considered the apoplast pathway (as the water is moving through a non-living ...
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Trying to identify a plant with pain-killing properties from northern Vietnam

My mother-in-law uses this plant to alleviate her pain caused by a severe case of spondylitis. This is a plant used in traditional medicine in her village near Hanoi, Vietnam. She doesn't know the ...
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1answer
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Dissection techniques for fruits and seeds

I'm doing some amateur botany, and I was keying some plants in the Brassicaceae (Cruciferae) family, which requires detailed information about the seeds of the plant. My question is, in a seed, how ...
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Why do cells in meristematic tissues lack vacuoles?

Cells located in meristematic cells in plants lack vacuoles. However, this contradicts with the fact that plant cells have large vacuoles to store water and keep the plant in an upright position. I ...
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What is the mechanism by which seeds stay alive while in storage? [closed]

I know folks who store seeds for months and sometimes a year before planting them. What is the mechanism by which they stay alive? Also some associated questions: How do the cells in the seed stay ...
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Of Autogamy, Geitonogamy and Xenogamy

Ok, so I know whats the difference between the three terms in botany. Autogamy is pollination within the same flower, Geitonogamy is pollination from the anther of one flower to the stigma of another ...
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Garden weed identification

I'd like to identify this weed found in a garden in northern England at this time of year (March). It reproduces using underground roots rather than flowers - so if you dig it up and leave any behind ...
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Are there any epiphytic plants that pull water from the air and supply terrestrial plants with excess?

Do you know of any epiphytic plants that pull water from the air and supply the excess to other terrestrial plants?
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Difference in rose seedlings with red or green seed leaves

I tried to sowing roses from rose hips the first time. (In autumn I collected some rose hips random from different bushes in the neighborhood. I mixed the seeds while sowing.) Now the seedlings grow ...
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What is this Patagonian biome?

This image was taken in Patagonia, near the Torres Del Paine National Park. What type of biome this is? There are trees and other vegetation, but they seem mostly dried. I think this is either a semi-...

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