Questions tagged [botany]

The study of plants and plant life.

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5
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1answer
112 views

Why have plants evolved to photosynthesize glucose instead of another molecular compound?

I think this question can be broken down into two sub-questions: Why do plants produce $C_6H_{12}O_6$ as opposed to another molecule following the formula of $C_nH_{2n}O_n$? Why not $C_8H_{16}O_8$, $...
3
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0answers
29 views

How does a heat-ratio sap flow sensor work and how invasive is it?

The Gizmodo article Undead Tree Stump Is Being Kept Alive by Neighboring Trees says: Leuzinger and Bader stumbled upon the stump while out for a hike. The woody stub caught their eye because callus ...
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1answer
59 views

Can someone tell me what these cocoons are?

I am camping in Slovenia and have found some cocoon like materials. They look like nests of some kind and are about 30cm long and 10-15 cm wide. Can anyone help me find out what these things are? ...
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0answers
54 views

Xylem vessels, lignin, wood

I learnt that lignin impregnates xylem cells, causing the cytoplasm to die due to the inability of water and nutrients to pass freely, hence creating hollow tubes adapted to transport materials. This ...
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0answers
35 views

Is presence of air necessary for silica gel to absorb moisture?

I am a biologist currently doing field work where I need to quickly dry leaf samples using silica gel crystals. I use the orange indicating kind that are 2-4mm in size. The setup is like this. I ...
1
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1answer
74 views

What species of mulberry is this?

I have several mulberry seedlings that have popped up in my garden. What species (or hybrid-species) are they? Details: The location is Toronto, Ontario The date is July 18th, 2019 I have several ...
2
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1answer
52 views

Will plants accumulate toxins from soil contaminated by toxic substances like paint thinner/lead paint?

After my grandfather died, demolition crews dumped garbage from the house onto his huge vegetable garden, including lead-painted windows, aluminum, asbestos tiles and more. Much of it got burned in a ...
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0answers
21 views

What is the total mass of leaves on an 'average' mid-latitude deciduous tree?

I know that this is a broad question as there are a very large number of different species of tree with all manner of profiles, height, leaf sizes, etc. My ultimate goal is to estimate the total mass ...
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1answer
67 views

Where does the carbon in new spring leaves of a deciduous tree come from?

When a leafless deciduous tree 'comes to life' in the spring and puts forth new leaves, where does the mass for these leaves come from? The tree has no leaves to make use of photosynthesis to get the ...
5
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1answer
168 views

Is there any biosafety level scale for plant pathogens?

Biosafety levels commonly defined on basis of human/animal pathogens, but what would be the biosafety levels for plant pathogens?
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0answers
92 views

What is this spiky fruit/cone?

I am trying to identify an unusual cone or fruit found today on Tayside in Scotland. Here is an image. Can you help?
4
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1answer
63 views

What is the identity of this flower found in Mavericks Beach in Half Moon Bay, California, USA?

Please help identify this flower I saw in Mavericks Beach in Half Moon Bay, California. It was smelling soooo good, you can feel from distance. I want to buy and plant in my garden. Thank you,
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34 views

Why doesn't the soil get depleted after repeated clearing of vegetation?

In my neighborhood, there is a hillside owned and maintained by the local municipality. The hillside is generally overgrown with vegetation. Work crews clear out the vegetation multiple times ...
3
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1answer
165 views

Unknown Lamiaceae plant identification

A while ago I received a pack of seeds described as Pycnanthemum Pilosum / Mountain mint. The seeds are small (below 1 millimeter) and brown: Plants grown out of these seeds are around 40 centimeters ...
2
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2answers
106 views

Can someone identify this plant I saw in NYC (might not be native idk)

I've never seen a plant with these type of leaves before and was wondering if anyone recognized/can figure out the species.
-1
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2answers
76 views

Is that a sundew?

I have bought the seeds for a sundew/drosera (growbro.nl) but I have pretty serious doubt if that is really the plant I wanted :-) If not, what kind of plant is that I have grown?
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0answers
22 views

Chemical inhibition of fertilization in plants

Are there any chemical compounds that inhibit fertilization in plants after gametogenesis? Simply put, I am talking about spermicide or emergency contraception for plants. Specifically, I am ...
5
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2answers
206 views

Why does this plum/apricot hybrid look like brains?

Why does this plum/apricot hybrid look like brains? Notes: Here's a photo of what a normal fruit on the tree looks like. Location is Zone 5, east of Toronto. There are about 20 other fruits on the ...
0
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1answer
44 views

Can I use a basic compound microscope to analyze the ploidy of plant chromosomes?

So, I'm not really any kind of trained botanist. But I do have two things: some dandelion seeds from France, and, collecting dust in my garage along with related accessories, this thing. Normally, ...
-1
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1answer
31 views

Long brown needly things fallen from tree?

I was walking next to a row of trees (I think coniferous) and found many of these things on the ground: A parallel bundle of 2-4 medium-brown needly things, about 15 cm long and 1 mm in diameter, not ...
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33 views

Could somebody please tell what tree genus is this?

Leaves of a tree in south Asia: It is in Pakistan, found in flat land habitats.
3
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1answer
51 views

Limitations of the Self-Incompatibility Mechanism in Plants

For a given plant species, how many types of S-loci exists to prevent self-pollination? I would like to know how often a plant stops fertilization process by other plants, thinking the pollens belong ...
15
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1answer
2k views

If plants “alternate generations” between sporophytes and gametophytes, why don't we say the same of humans?

I've been reading on Wikipedia about how plants alternate generations between a diploid sporophyte (usually the dominant part) and haploid gametophyte (in flowering plants, the pollen and ovule sacs). ...
4
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2answers
151 views

What is it called when a dead flower is rotted away and only the veins remain?

I've spotted a flower that is dead: It looks like most of the tissue has rotted away and only the veins remain. (Sorry, I don't know the proper name for flower veins). What is the technical term ...
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1answer
51 views

Can anyone identify this small shrub? Has white flowers

Small shrub in adelaide south australia garden.
3
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1answer
91 views

Type of Tree With Somewhat Squarish Fruit

I live in the SF Bay Area and am trying to identify a tree on my street. It's the fruit that is confusing me -- does anyone know what this fruit is? It's not a rare tree -- there are at least several ...
2
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1answer
89 views

What’s the name of this tree?

I’m trying to find information about this tree that I didn’t plant. Looking for information in terms of pruning, etc. It had white flowers on it this spring, but is now flower less and has very few ...
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0answers
12 views

Where to find data on different crops

Hello I'm not sure if this is the proper place for this question. If not, I am happy to move it. I'm trying to find a source of data on different crops, is there some governmental database that ...
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2answers
139 views

What is this fruit

What is this fruit? Is it edible? Found it in my backyard, in the Lehigh valley, eastern PA. Here's the photo:
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2answers
43 views

What can be the reason for yellow and dark marks on leaves?

The plant in our office started to have this strange marks, what can be the reason for that kind of marks? how can we cure the lovely plant?
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1answer
15 views

Where to download confier (pine) or A. thaliana annotated reference RNA transcriptomes in full .gbk (GeneBank) format?

Where to download confier (pine) or A. thaliana annotated reference RNA transcriptomes in full .gbk (GeneBank) format?
3
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1answer
663 views

Liquid that comes out raw mangoes

What is the composition of the liquid that comes out of a raw mango when you break it off from its stem? It oozes out some sort of juicy liquid. Any idea what that is? Also, is it edible?
2
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1answer
62 views

What kind of ribes is this?

I have a plant in my USDA zone 5 garden that appears to be in the ribes genus. Details: The location is east of Toronto (Ontario, Canada). The plant is currently flowering (today is May 18th, 2019)....
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0answers
20 views

Does the difference in the height of artificial lighting affects the height of the plants?

I have some plants living on artificial lighting. I've noticed the following in the following two plants of the same species: This one was grown with lamps very close to it (~10cm). This one ...
2
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1answer
82 views

What is this tree growing in my town?

Can anyone tell me what kind of tree this is? I took this picture today. It's in Iowa City, Iowa.
2
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1answer
68 views

Can two populations of the same species pollinate during different times?

My question comes from the Barron's SAT Subject Test Practice Test #1 question 2 It states: Two populations of rhododendron, R. ferrugineum, grow in the same region of Connecticut. Although ...
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1answer
82 views

Does anyone know what this purple plant is? (picture taken in Turkey)

Is anyone familiar with this plant species, picture taken in the Dalaman region of Turkey. It has large purple leaves.
2
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3answers
91 views

Which plant's part is this?

I found this plant in Rajasthan, India. This sample is 4-5 cm long. This is an ornamental plant. It was a potted plant. I put my fingertip in the photo to give an idea of size of the specimen. I can't ...
4
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1answer
439 views

What is the scientific name of this plant that is possibly called ogre ears?

I already did a reverse image search and came up with "ogre ears" as a name for this plant. However, this name is associated with other plants: Crassula argentea and Crassula ovata. What is the ...
1
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1answer
44 views

Growth on raspberry cane: What is it?

I have raspberries growing in my garden. One of the raspberry canes has some sort of growth on it. Size: Approximately 2 inches long Location: Zone 5; east of Toronto, Ontario, Canada Date: April 4, ...
1
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1answer
37 views

Plant identification and toxicity

What type of plant this is and is it poisonous (and, if so, in what quantities)? The pictures were taken at Gullane Bay, Scotland. The plant is widely present in that region.
1
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4answers
326 views

How many nutrients do trees process daily?

Is this tree fact below that I have found on social media sites true? I don't know the source of the quote. It's pretty amazing. I'll be glad if someone can provide the source too! Natural Wonders ...
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1answer
40 views

Do violet potatoes contain more or less solanine than normal potatoes?

What is the solanine content of the violet potatoes? Is it more or less than in the normal potatoes?
6
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1answer
85 views

Can anybody identify this kind of plant?

Location: Low Tatras, Slovakia, elevation: 1800 m. Can anybody identify this plant from Slovakia mountains?
7
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1answer
817 views

Identify This Plant (Flower)

I just bought this plant from flower shop, after it flowered it was very beautiful red flower, can anyone tell me what is this flower?
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0answers
22 views

The correlation between a leaf's age and its length in the initial stage of growth [closed]

I am building a machine learning algorithm which predicts the age of a leaf before its maturity period based on its measured length or area. I would like to know whether there is a mathematical ...
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0answers
43 views

How can I learn biology by myself? [duplicate]

I am only 15 years old,and my primary school education hasn't been that good,also I forgot a lot of things. I would like to start again,and I am asking for your advice. What are some of the good ...
1
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1answer
443 views

Is a flower having 12 petals trimerous or tetramerous?

Suppose if a flower has 12 petals. Then 12 is a multiple of both 3 and 4. So which category of flower is it? Is it trimerous or tetramerous?
3
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1answer
76 views

What species of tree is this (found in Navarre, Spain, many tiny flowers)?

It was planted within the urban area of Pamplona, Navarre, in Spain. It does not seem like it's native to the area, since no trees like it are found in nearby forests. Its size is of 7-9 meters, while ...
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0answers
27 views

Is Wikipedia a good source of taxonomy? [duplicate]

I have been quite interested in biology lately,and I would like to know whether it is a good choice to look up taxonomic information there.

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