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

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Why do halophytes have pneumatophores?

The following is a excerpt from Studies in Botany The problem of respiration is a matter of difficulty in the soil which is saline, water logged and rich in putrefying organic bodies-hence poor in ...
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30 views

Can anyone tell what kind of berry/currant this is?

I found this currant-like plant in Helsinki, Finland. It seems very similar to red currant but it has hairs on its fruits, and the fruits are pear-shaped. Can anyone please identify this plant? Many ...
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1answer
61 views

What is this - nest, eggs, fungus?

Anyone know what these are? I found them in our local park today attached to a wooden earth-retaining wall.I was thinking some kind of insect nest/egg sac (spider?) They're about the size of a medium ...
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1answer
29 views

How to use Transect-based sampling to select sample trees [closed]

I was wondering if you help me how to use Transect-based sampling to select sample trees
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30 views

what type of random sampling method commonly used to select trees in a forest [closed]

I was wondering if you can help me what type of random sampling method used to select trees in a forest
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1answer
19 views

What is the name of the groove down the middle of an anther?

I thought it had a name along the lines of interlocular groove, but I haven't been able to find that term anywhere.
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3answers
72 views

Can plants grow without photosynthesis?

Animals can survive without eating if nutrition is injected directly into their blood. Can the equivalent be done with plants? By injecting carbohydrate rich nutrient solution, either without ...
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0answers
14 views

Why doesn't Poison Ivy cause a reaction under one's fingernails?

Okay, so I pulled up a bunch of Poison Ivy last week and I got itchy up and down my arms. I scratch and I think that causes the oil to spread causing more misery. However I notice that I don't get a ...
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1answer
77 views

What chemicals/substances exist in green capsicum (peppers) that do not exist in red capsicum?

I have known 3 people in my life that have incredibly adverse reactions (one called it an "allergy" and his symptoms did resemble such) to consuming any form of green pepper (capsicum) but have no ...
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10 views

Question on my Bradford Pear Tree [migrated]

We have 2Bradford Pear trees out front,this spring the one on the right was full of Bloom's,the left one was very scarce of blooms, the right tree is full of leaves,the left one is almost bare. We are ...
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25 views

Are there any bacteria with a protective calcified ‘skeleton’?

Some algae like the coccolithophores form coccoliths which are individual plates of calcium carbonate. But are there also bacteria known that can make such a skeleton?
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19 views

What is the molecule responsible of the yellow color of the Agave americana?

Does anybody know what is the molecule responsible of the yellow color at the edges of this plant? I noticed also that the new forming yellow part at the begging stage is soft green until it is ...
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1answer
46 views

Making a hole in a tree is okay? Or does it damages the tree?

I am watching a TV series named "Treehouse Masters." What they do is make houses on trees or around it getting physical support from a big strong tree, like this: But to make the support strong, ...
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1answer
40 views

Identify this plant from the Netherlands with big white flower

The picture was taken today in the Netherlands. Can you identify this plant species?
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43 views

“CO2 is plant food” - What is the actual effect of increased CO2 on plant growth?

A frequent talking point by global warming deniers is that CO2 in the atmosphere is actually beneficial because "CO2 is plant food". I'm a non biologist trying to figure out under what circumstances ...
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0answers
12 views

Making tea out of grape leaves -when to pick the leaves? [migrated]

I have a question for you regarding make tea out of grape leaves. I want to make some, but don't know when the best time to pick the leaves it. I know it's made in Greece and the USA, too, but not in ...
2
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1answer
20 views

Relation between biomass and radius of roots system

Is there a known relation between the mass of a plant to the size of its roots? For example, can I take the root size to be proportional to the biomass of the plant like in this relation: $$R = R_0 (...
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0answers
23 views

Names for the degrees for symptoms from drought (or other damage) done to trees

Looking out my window, I see trees suffering from drought. I once knew the name for the degrees visible, but I have forgotten and can't find it on the net. Attempt at describing "level of dryness" ...
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0answers
16 views

How is the acetone method different from QB buffer for extraction of plant protein?

I primarily work on animal tissue but I thought of running an SDS-PAGE for plant tissue just for fun. I searched for some protein extraction protocols online and I don't know which one to choose. One ...
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2answers
117 views

Does a plant have to have leaves to produce fruit?

Is it possible that a plant can still produce fruit, even though it may not have leaves? Are there any plant species that can produce fruit without leaves?
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1answer
121 views

Why is the manchineel tree so poisonous?

The machineel tree is incredibly toxic to humans. What advantage could Hippomane mancinella have for being so poisonous? It's name even apparently translates to “little apple that makes horses mad”. ...
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0answers
8 views

will 2,4 Dichlorophenoxy acetic acid be effective as an herbicide against banana and papaya

Since 2,4 D is effective against broad leaved weeds/plants, will it be effective in case of banana and papaya?
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1answer
48 views

Species Identification: Coniferous tree, Italy

I noticed it close to the place where I work, I live in Italy Could you tell me the complete name of this tree? Particular of the leaves
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0answers
11 views

Does alcohol affect water potential across a tonoplast? If so, would it cause it to explode or implode?

This was a question I saw in a biology exam I recently sat. I know it affects the r-groups of the transport proteins, causing them to change shape and become leaky, but does it also affect water ...
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1answer
73 views

Species Identification: Bulbous root on plant, Southern California, USA

In Southern California, I was pulling out some roots and grasses and weeds in our backyard, and I noticed something weird. It appeared like there was a grape-sized bulb of something connected to one ...
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0answers
18 views

Do cortical cells in root have higher water potential than endodermal cell solution?Or is it the other way round?

Well, water normally passes from root hair cells to cortex to endodermis, and from there to the xylem vessels. All of this occurs down the water potential gradient by apoplastic or symplastic pathway ...
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16 views

What is Amphitropous ovule & what is Hemianatropous ovule? Got different answer from different sources

I have two books where they are saying just the opposite of what the internet websites saying. The two books are:- STUDIES IN BOTANY written by Mitra, Mitra, Chowdhury A TEXTBOOK OF BOTANY written ...
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20 views

What is the name for the mark on a fruit or vegetable where it connected to the main plant via the Peduncle/Pedicle?

When you pick a fruit or vegetable there is very often an obvious mark left on it from where it was attached to the Peduncle/Pedicle. I was wondering if this area has a name. It's clearly visible on ...
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2answers
30 views

What is the genetic difference between two cone branches?

As we can see on this larch, male and female cones are sometimes directed to grow on the opposite side of the branch. We were told in school that this mechanism works against self-fertilization. Also ...
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1answer
19 views

Indoor plants acidic soil

I have a ponytail tree plant. The new growth look anemic, pale and thin. And several leave have browned from the midway to the ends of the leaves. The stem is woody and firm. Though it is in a solid ...
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1answer
63 views

What kind of kale is this?

I'm from Pennsylvania and I used to get this kale all the time at the grocery store, but I moved to the West Coast recently and can't find it anywhere! It looks exactly like this photo: Image source:...
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2answers
237 views

Why do pink rain lilies flower only after rains, and not from being watered?

We have pink rain lilies (Zephyranthes carinata) in the garden. In my personal experience, I've found that they always flower, without exception, shortly after rains. However, there are roughly ten ...
2
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1answer
66 views

What is the name of this green plant with thin leaves?

I've seen this in Scotland between Balmaha and Inversnaid: A higher resolution is here: https://commons.wikimedia.org/wiki/File:Balmaha-Inversnaid-9.jpg What is the name of this green plant with ...
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2answers
308 views

What is the name of this plant with small, 5-leaved divided pink blooms?

I found this in a forest in Karlsruhe (Germany). The blooms are pink and have 5 leaves. Each leave is divided into two parts. It is pink and has a diameter of about 1-2cm.
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1answer
51 views

Mangroves and desalination of sea water

I am not an expert but I guess that mangroves (or some other plants that thrive in sea water) perform some kind of desalination to extract fresh water from sea water. Is this true? If yes, What ...
2
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0answers
41 views

Do trees have genes for stopping the grow?

Do trees have genetically encoded to stop growing at some height, to keep dividing the cells only to a certain amount, or to pump nutritions only till it's advantageous because they've already ...
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0answers
25 views

What tell a plant to have one/a lot of flower(s)? [closed]

some plants just have one flower and some have more. This is the question. please simply tell me how? which genes or pathways control this in various plants?
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0answers
26 views

Banana cultivar identification

I found a cultivar of banana that I haven't seen before (and that was significantly different from the standard Cavendish cultivar) in a market in Hong Kong today, due to the language barrier (...
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0answers
18 views

Moss Transportation System

In my biology textbook, it says that mosses are avasculer and do not have xylem like spermatophytes. So by what means do mosses transport nutrients ?
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1answer
45 views

Plasmolysis vs Flaccidity in cells

When is a cell said to be flaccid and when is it called plasmolysed? So far I found that there is a specific relation to osmosis.
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1answer
24 views

Are there any (chemical) processes occuring inside a seed while it's in a dormant state?

If a seed were in a glass jar without a chance of germination, are there any (chemical) processes occurring inside the seed while it sits there? My intuition tells me no since my understanding of ...
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1answer
35 views

A question regarding trichomes in plants

Trichomes in general are features of xerophytic leaves, which reduce water loss by evaporation by trapping water vapor and increasing humidity (as a result lowering the water potential gradient). BUT ...
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1answer
71 views

What is the name of this beautiful white trees?

I found this beautiful white trees in an unknown video.
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0answers
26 views

Can plant roots absorb dissolved oxygen from water, or do they require actual bubbles in the water?

Plant roots generally require some exposure to air. Deep water culture is a form of hydroponics where plants' roots are left to soak in water. To keep the roots from "suffocating", most online ...
2
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1answer
28 views

How important is dead wood to the ecology of a forest and how much dead wood should remain?

I have a local 'forest management group' in my area. One of the jobs they do is to thin out the forest by removing some of the trees. They then sell the wood for firewood. I want to tell them to ...
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0answers
15 views

Transport of auxin

I read that auxin is transported via active transport unidirectionally, and that this is given a special name—polar transport. However, I’ve seen so many experiments regarding phototropism involving ...
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0answers
19 views

Is it possible to inject pigments into a leaf?

Is it possible to introduce exogenic pigments into the leaves of a plant? And, if so, how could you do that? Goals: the plant should not die the pigment should be visible looking at the plant (...
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0answers
34 views

Is there a way to identify a species of tree?

My family has been passing down seeds from a lemon tree for about 3 generations now, There is some controversy about its origin or species. The lemons look like tangerines and when cut the pulp is ...
2
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1answer
26 views

Flower identification (Singapore, April)

I saw some flowers growing by the roadside today, and was wondering about the species of this plant. The plant also appeared to be fruiting, and it produced small fruits that formed small clusters.
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21 views

Phototropism or Hydrotropism is a more important factor for trees beside the lakes growing bending to the water?

I see a lot trees beside the lakes are growing bending to the water and I wonder why. After reading this I think it might be a combined effects by: Phototropism: the lake works as a mirror and ...