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

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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
44 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 ...
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+100

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 ...
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1answer
47 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
288 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
32 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 ...
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0answers
14 views

Speciation : More rapid in sexual or asexual population [closed]

A similar species of plants exist at two altitudes. At higher altitudes where pollination is low, the plants reproduce asexually. Whereas at lower altitudes where there are pollinators cross ...
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0answers
34 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
21 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
16 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
17 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
24 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
21 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
26 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
62 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
15 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 ...
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1answer
24 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
14 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
18 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
32 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 ...
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1answer
23 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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0answers
10 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 ...
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1answer
44 views

How can a haploid plant be bisexual?

According to Wikipedia: Meiosis is a specialized type of cell division that reduces the chromosome number by half. This process occurs in all sexually reproducing single-celled and multicellular ...
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1answer
52 views

Why all trees have cylindrical stems?

Why a huge number of trees/plants have cylindrical stems? I have been told that this question's answer lies in Physics but I don't know where to find. Can any one help?
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0answers
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Have there been any studies on 'surf balls'? (not related to surfing)

I know the title sounds like something else, but I'm actually wondering about these things, which are also apparently called 'whale burps': This one was found on a beach on Lake Michigan. Does ...
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2answers
13 views

Do Class A biosolids count as organic fertiliser?

Does Human Waste, which has been treated at least twice to remove pathogens & remove stink, still count as organic despite it passing the EPA's class A standard? If so, does this mean that ...
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2answers
64 views

Does anyone know the explanation for branches with different flower colors (see picture)?

As you can see in the below picture, there's a branch with white-colored flowers, while the rest of the tree has pink flowers. I googled a number of questions but it is a bit complicated to ...
2
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1answer
76 views

I need help identifying a completely unknown plant for my biology class

I know two things about this plant 1 is that it does not need to be watered for a long time because it has been able to survive in my schools greenhouse for quite some time without water and 2 my ...
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0answers
19 views

Do any plants grow leaves beneath the ground?

We have a pretty common California weed in our yard. When we dig in the ground, we often find small ones there, with green leaves! It's as if they form green leaves before they come to the surface. ...
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0answers
68 views

Behavior of plant guard cells: open or closed stomata

On an exam of mine, I had the following question: The interaction between the guard cells and stomata in a plant leaf can be seen in the diagram below. In which scenario could the guard ...
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3answers
81 views

What type of tree is this?

This is a tree that I have been growing. I'm wondering if this is a mulberry, and if so, what kind? Location is Arizona.
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25 views

How quickly does plant cells regenerate? [closed]

This is a question from my Biology class homework? I've looked online, but I can't find the answer.
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0answers
27 views

Why does my corn appear to have perfect flowers?

Corn is said to be a synchronously monoecious plant with separate male and female flowers. I am growing a cross between a Peruvian and heirloom variety which seems to be growing some perfect flowers ...
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0answers
21 views

Can humans extract calories from all roots? [closed]

Roots are used for storing plants' energy, which suggests that humans could extract the calories by consuming them. However, I have been unable to find any substantial sources on consuming the roots ...
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1answer
72 views

Why do fruits have to ripen?

It seems like most fruits that we consume undergo some sort of ripening process either before or after they are picked from the vine, tree, etc. I understand that sugars are released during the ...
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2answers
55 views

Current scientific theories for evolution of Cucurbita

I'm attempting to find research on scientific theories surrounding the evolution of certain plants, and am unable to find any footing with respect to a certain genus. In this case, I am researching ...
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Why do shed and brown poplar (Populus) leaves get an iridescent blueish colour when wet?

When the brown leaves of poplars shed on the ground stay for a while under wet conditions (e.g. like in a puddle), they become a fascinating iridescent blueish colour, which is best seen when light ...
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1answer
34 views

Creation of healthy genetically modified crops [closed]

GM crops are huge at the moment, and the noticeable 'counter movement' is for people to continue to purchase organic foods (please note I am specifically talking of GM crops and not meats, etc). The ...
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0answers
19 views

How does the snail shells' fertilizer compare to regular fertilizers?

May I ask about the quality of the fertilizer derived from the shells and their effectiveness compared to other fertilizers on the market ?
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0answers
21 views

Relation b/w venation and transpiration

What purpose does reticulate venation in dorsiventral leaf or parallel venation in isobilateral leaf serve? Does it have any relation with unequal transpiration in dorsiventral leaf or equal ...
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0answers
28 views

What are the evolutionary benefits for herbs having beneficial health effects on humans? [duplicate]

There are many types of plants which produce chemicals which can be beneficial in treating human illnesses, or at least alleviate painful symptoms. Why would they do that? Is it just random chance, ...
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0answers
39 views

What is this plant/tree? [closed]

I'm trying to identify a plant or tree.Small round Orange to yellow petals with a protruding red stamin. Found in the Florida keys. Sub tropic.
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2answers
364 views

Are these birch or aspen trees?

I was just wondering if anybody could help me identify the trees in this image? I am confused as to whether they are aspen or birch, a mix of the two, or whether the brown/reddish trees are some other ...
3
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2answers
52 views

Are chilies technically peppers?

Nando's chain of restaurants (UK) refers to chili peppers as just "chilies". My friend and I had a discussion with regard to whether chilies can be called "peppers" or if they do not belong to the ...
6
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1answer
86 views

Is Asteraceae and Compositae the same family?

I'm wondering what taxonomic family sunflowers (Helianthus) belong to. Although it's mentioned it belongs to family Asteraceae it is also a composite flower. So it belongs to Asteraceae or Compositae ...
4
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1answer
92 views

Why it seems that principles of chemistry are not being applied in this biochemical process? [closed]

According to an answer in this question, my concept used below does not apply: In the non-cyclic photophosphorylation, consider splitting of two water molecules, then 4 e- (electrons) and 4 H+ ...
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2answers
23 views

Ions in Stomatal Opening Mechanism

When a stoma’s guard cells try to swell and open the stomata, they actively pump out protons outside of the cell. This causes a membrane potential, where the inside of the cell is negative with ...
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0answers
18 views

Are there water conservation methods that increase waste instead of reduce it? [closed]

For example, does improperly washing clothes lead to mosquito increases or other-organism morbidity? Does using dish water on the garden attribute to clean water more or more wasted water (is it ...
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0answers
23 views

Database/Reference on optimal conditions for plant growth in greenhouses [closed]

We are a group of computer science students currently working on a university project to create a (almost) self-sufficient greenhouse. The hardware and software aspects being almost finished, we ...
2
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1answer
18 views

Anemiaceae etymology

What is the etymology of the name Anemiaceae for a family of ferns? I assume that it's from the name Anemia for one of its genera, but that is equally mysterious. Obviously it has no blood, but what ...