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

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65 views

What plant is it?

Do you know what plant is it? I found it in France
27
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1answer
7k views

Why does a coconut have exactly three holes

A theory says: As coconut is a sibling of palm, somehow long time ago, three palms were in a same husk. Based on evolution theory, it's how the coconut was born in the world with three holes. ...
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1answer
33 views

What is the name of the plant with the down-falling light purple leaves?

I've seen this flower in Scotland in August 2015: What is the name of that flower? To help people google it: The plant has light purple leaves with some white spots. On those white spots are dark ...
8
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1answer
79 views

Why would a venus fly traps mouth that's still “chewing” die?

A venus fly trap produces leaves that act like traps for insects. A trapped insect is digested over several days. The trap then opens again to catch another insect. These traps regularly die off. ...
3
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3answers
314 views

What is the difference between meristem and bud?

Keep reading both terms quite frequently while studying plant physiology. I did some research trying to establish their differences and I learnt that meristems are undifferentiated cells that can ...
2
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0answers
34 views

What is the highest pressure at which plants can survive?

Inspired by this awesome question, I'm looking for the corresponding maximum: what is the highest air pressure at which plant life can survive? For example, Venus's atmosphere is about 90x as dense ...
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0answers
21 views

what is the effect of temperature and carbondioxide on the opening and closing of stomata?

I am teaching biology in an academy. The question which I had asked above had been raised by on of my students. I tried my level best to search out the answer to this question but I could not find the ...
3
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0answers
35 views

Do ginko trees grow well in Eastern North America (specifically Ontario,Canada)

I have recently noticed many Ginko (Ginko biloba) saplings planted in my Eastern Ontario city (in Canada), and they are looking a bit sickly, with yellow leaves. They seem to be a popular choice in ...
7
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3answers
10k views

What's the difference between a plant and an animal?

Are there some living things where the distinction between plant and animal is blurry or unclear? I wouldn't know where to put something like yeast. I also thought of photosynthesis, but then I ...
3
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0answers
21 views

What techniques can be used to link environmental conditions to crop yield?

Im interested in how we can determine what are the optimal conditions for crops and how deviations from these optimal conditions affect yield. In the literature I have found two main approaches and I ...
1
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1answer
102 views

How do roots absorb water instead of presence of waxy - material suberin in the form of casparian strips on the wall of endodermis?

I found that in the endodermis, the tangential and radial walls have deposition of the waxy, and hence water-impermeable, material suberin in the form of casparian strips. The endodermis comes before ...
1
vote
2answers
262 views

How do plants get carbon?

How do plants get carbon? From air or soil? How is it different for aquatic plants and algae? According to https://en.wikipedia.org/wiki/Soil_organic_matter soil has 3.3 times the size of the ...
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0answers
11 views

Nicotine and plants [duplicate]

I hear that nicotine, produced by Nicotiana tabacum, is poisonous to the plant itself, which is why it accumulates the nicotine in the central cell vacuole. If so, why is nicotine produced in the ...
2
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1answer
34 views

Questions about a fossil

I have a plant fossil that my dad once found for me at a beach in Denmark, Europe about 15 years ago. Is it possible to identify what kind of plant it is? There is a fossil water bubble suggesting ...
3
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0answers
73 views

Cause-and-effect questions about growth and development of plant

I need to solve some cause-and-effect problems. The problems are related to growth and development of plant. "Growth and Development" chapter is the first chapter in third level of high school (senior ...
3
votes
2answers
65 views

Can anyone ID this flower plant by the photo?

Can someone identify this plant? It has big red flowers when it flowers! Not sure if it is native, but it is in my grandmothers garden in Vancouver, British Columbia, Canada.
0
votes
1answer
32 views

What kind of tree is this?

I live in Denmark, Europe and was going for a walk on a beautiful cemetary in the city. I saw this tree and would like to know what species it is. Unfortunately i have no photos of the tree from a ...
2
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1answer
46 views

Can anyone identify this plant from Bangladesh?

I have taken the picture from an agriculture university in Bangladesh.
8
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1answer
140 views

How do plants benefit from their seeds being buried?

Common planting advice, when starting many plants from seed, is to bury the seed some small distance under the soil. It seems like most plants (at least members of class Dicotyledonae) will grow a ...
4
votes
1answer
117 views

Fruit-bearing tree identification

Just moved into a new house in Puerto Rico and I found this tree in the back garden. Can anyone tell me what tree this is, and whether its fruit is edible?
7
votes
1answer
21k views

What factors affect the rate of transpiration in plant leaves?

I'm trying to get my head around factors which affect transpiration in leaves. For example, how would applying petroleum jelly to the surface of plant leaves affect their rate of transpiration? I ...
31
votes
4answers
6k views

Why would a plant evolve to produce an addictive chemical?

It seems kind of anti-productive in terms of survival for a plant to produce an addictive chemical as that plant will constantly be sought after by animals that ingest it. In this instance, I'm ...
3
votes
1answer
72 views

Do you know what plant it is?

I saw this plant when I was on my trip to the Ukraine. I wonder if those berries are edible. Thanks a lot in advance.
3
votes
1answer
152 views

What biological processes can affect the temperature of the shadow a tree casts?

Assuming two trees have similar shape and leaf coverage, could differences in the biological processes among them lead to differences in the temperature of the shadow they cast? What biological ...
12
votes
1answer
159 views

What is the biological age of grafted plants?

Suppose you graft a piece of an existing 'old' plant. Will it continue to grow having the same biological age as its parent? I.e., would it die at the same time as its parent? Or would the process of ...
3
votes
0answers
50 views

What Chemical Trigger Causes Ectomycorrhiza To Change From Asexual To Sexual?

I am searching for the catalyst behind the change of asexual to sexual ectomycorrhiza when symbiosis with a tree root is formed. As ectomycorrhiza attaches itself to a root, they form a relationship ...
4
votes
1answer
342 views

Help identify this awesome climbing plant with velcro like stem

I got this plant sprouting in my window box this spring. Starting from a single seed, it has grown into an impressive array of branching climbing vines, reaching 6 feet tall. The stem turned red as it ...
5
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1answer
89 views

What is the name of this flower?

A flower has grown on a leaf in our garden. What is the name of this flower? Give some description.
7
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1answer
121 views

Flower identification: Moscow, Russia

I found this plant near the MSU, Moscow, Russia. Could someone help me to identify it?
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1answer
57 views

Why do tomatoes look so much like pomegranates? [closed]

The pomegranate fruit has been cultivated since ancient times, particularly in the Middle East and the Mediterranean. It has a hard outer rind, and inside are several chambers, each of which contains ...
4
votes
2answers
109 views

Is this Heracleum sosnowskyi?

There's a relatively big scare in local news about the Heracleum sosnowskyi plant, considering how dangerous it can be. I was strolling through the park when I noticed these plants - the ones I ...
3
votes
1answer
69 views

Which plant is this?

I'm curious what plant this is! I found it at 37°52'23.2"N 122°16'55.3"W (north of Oakland, California, USA).
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3answers
1k views

Why are plants referred to by their Latin species names, and not by their popular names?

Often the names of herbal ingredients in certain cosmetics products are given by their scientific names like Anthemis nobilis instead of chamomile or Lavandula angustifolia instead of lavender. Is ...
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2answers
63 views

Can someone identify this stinging plant?

I have no idea where this plant came from, or what it is. What I do know is its leaves are covered in little hairs, there's little thorns growing all over it, and just by rubbing its leaf it burns you ...
4
votes
1answer
353 views

What flowering green plant is this?

I got this green plant as a gift many years ago, but I have never seen it flower before. It has a strong, pleasant scent and cool flowers so I'd really would like to know what it is.
0
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1answer
115 views

Can roots have cuticle, especially aerial roots?

In my school biology book, it is written that cuticle covers the epidermal cells in aerial parts of plants and root epidermis doesn't have cuticle. My question is that whether aerial roots, in plants ...
16
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2answers
1k views

How do plant galls form?

I am curious how Gall Wasps, bacteria and other organisms induce galls to form. Specifically, what chemicals induce gall formation?
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0answers
42 views

Which taxonomic classification schemes are most accepted?

Since the taxonomic classification schemes followed by universities around the world are different I wish to know which are the most accepted classification schemes till date concerning the following ...
1
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0answers
40 views

How to measure the biomass of hydroponic plants in netpot/rockwool DWC system?

I'm doing an experiment with 4 kale plants, each in their own small deep water culture (DWC) system. Each plant was transplanted in rockwool with netpots and clay pebbles. But I need to periodically ...
4
votes
2answers
187 views

How do researchers map root systems of plants?

For example, here is a picture of the root systems for some prairie grasses: (Click image for higher-resolution PDF) from: http://www.conservationresearchinstitute.org/educational-offerings.html How ...
6
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1answer
294 views

What is the scientific name of this evergreen plant?

This plant is found in India. It is an evergreen plant. Would love to know the scientific name.
4
votes
2answers
481 views

Why doesn't human consumption of plants cause infectious diseases the way consumption of animals can?

At first I want to clarify that I do know that there are naturally poisonous plants and plants that can hold radioactive stuff or toxic material from the environment. What I mean by "diseases" (I ...
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vote
0answers
33 views

Calculating the canopy size (crown) of a newly planted tree at a future date

Assuming that one knows the maximum area of the canopy and the age of the tree when it achieves this. And given an initial canopy size from the nursery. How would I calculate the canopy size at a ...
48
votes
1answer
3k views

What could cause a forest of bent trees?

While hiking on the northern Idaho-Montana border, I encountered a large area where virtually every tree is bent at the base in the downhill direction. Only the very largest and very smallest trees ...
4
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2answers
113 views

Is the water transpired by plants pure H₂O, or does it contain trace minerals?

I'm considering the idea of drinking water that I trap from what is transpired by trees. Interestingly, is this water a fairly (or maybe even extraordinarily) pure form of H₂O, a remarkably pure ...
30
votes
3answers
5k views

Do trees really get a large share of their mass from the carbon in the air?

I remember hearing that trees and other plants actually obtain a large amount of their mass from the carbon floating in the air, not the ground beneath them. Does the makeup of air actually contain ...
5
votes
1answer
142 views

What is the trigger of pollen tube formation when the pollen is on the stigma?

What is the mechanism of pollen tube formation when the pollen is close to the stigma ? Is it because of chemotaxis? In other words, is the growth triggered by some chemical substance that is ...
7
votes
1answer
103 views

Plant identification in Turkey

What species is this ? It is a stinky, hairy plant. I have found it nearby a river. It had reached a height of 1 meter. Bloomed three weeks ago. Found in Turkey.
4
votes
1answer
268 views

Can anyone help me identify this plant?

I have a Chamaerops humilis in my apartment and in there is these small plants growing. I live in Denmark, Europe and my palm tree has only been inside my apartment since i got it. Can anyone ...
3
votes
1answer
52 views

Plant identification

What plant species is this? Its stalk looks like a grapevine, but the leaves & flowers not. It bloomed this week (Mid-June). I have found it in Turkey, Amasya. If you want, I can add more ...