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

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what is the natural way of rose to propagate by its vegetative cells?

I have read that rose reproduces sexually. But I have also heard that it can propagate by its vegetative cells (vegetative cells in its root). Is this correct? If yes, can I know how does it propagate ...
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0answers
28 views

Symbiosis of Pseudomonas Fluorescens

Have a modest background in molecular biology and presently considering a project that requires some knowledge of botany. Specifically, I seek details on the epiphytic relation between the microbe ...
20
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1answer
538 views

Why are many fruits sour?

Many fruits (like apples, berries, citrus fruits etc.) contain high levels of organic acids, especially malic acid and citric acid. Are there any evolutionary functions of those acids in ripe fruits? ...
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1answer
2k views

How can Valonia ventricosa cells get so big?

Valonia ventricosa are single celled algae that range between one and few centimeters. In rare cases they can reach sizes exceeding 5cm. They range from grass green, to dark green, and some are even a ...
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0answers
56 views

What is the name of this plant, from Bangladesh?

This is a small plant from my backyard. I have found the flower closes in the evening.
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1answer
102 views

identification of this flower

I saw this flower in Pulau Ubin in Singapore. Can anyone identify the species of this flower?
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3answers
797 views

Why don't the apples seeds from grafted trees produce the same kind of apples?

As Wikipedia says: Grafting is a horticultural technique whereby tissues from one plant are inserted into those of another so that the two sets of vascular tissues may join together. In most ...
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0answers
45 views

Please help me to identify this plant?

This is quite common in vegetations near swamp areas in Bangladesh.I have included multiple picture hope that compensate for the bad quality.
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1answer
47 views

How long can a plant generate oxygen from its own carbon dioxide, produced during nighttime?

I recently bought one of these miracle fruit plants (Synsepalum dulcificum). Since they are of tropic origin, they need higher humidity and temperature as we have it here in Austria. So I decided to ...
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0answers
44 views

Can anyone please help me identify this plant? [closed]

Please help me identify this plant. My aunt had one but it died due to the drought in California. She wants to get a new one but she doesn't know what it's called. The leaves are around two inches and ...
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6answers
7k views

Why do plants have green leaves and not red?

I know plants are green due to chlorophyll. Surely it would be more beneficial for plants to be red than green as by being green they reflect green light and do not absorb it even though green light ...
4
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1answer
114 views

Best method for measuring very young plant growth?

Is there a preferable method for measuring plant growth for a plant before the "sprout" stage? Preferably at the microgreen stage? I assume it would not involve some type of leaf based measurument, ...
5
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1answer
85 views

What is this tiny thing on the branch

I noticed a tiny spot with weird shape on the shoot of a plant (Variegata), and there are many others on other branches. I wonder what is it, this is a cropped picture of it, Thank you!
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1answer
62 views

Folding of bulliform cells

How do bulliform cells cause a leaf to fold in half when the leaf looses water? Also, how would these bulliform cells be arranged to cause the cell to instead curl up?
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0answers
52 views

Monocot stele in roots

Why do monocots have eustele in the roots instead of protostele like dicots? I thought the roots don't need the strength of eustele because the roots are supported by the soil. So what is the ...
12
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2answers
570 views

How deep in the soil can a seed be placed and still develop into a plant/tree?

The selected answer to How does a plant grow before photosynthesis is possible? indicates that a sprout grows beneath the soil using the food stored within the seed. Does this limited ready food ...
5
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1answer
109 views

What could cause spiral tree growth?

While hiking through one of the areas burned in the 1988 Yellowstone fires, I noticed that some of the trees appeared to have grown in spiral patterns. Most downed trees have crack patterns that ...
5
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0answers
72 views

How does a garlic clove thrive inside a closed refrigerator?

A garlic clove has been growing very well inside a closed refrigerator. It has developed beautiful green stalks, which I think are the equivalent of leafs. Since they are green, I assume they ...
3
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1answer
116 views

What is this plant?

It was found in Eastern Pennsylvania (in the United States) in a deeply wooded area.
2
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1answer
84 views

What is this flower?

I was in Germany recently, and I saw again a flower that I'd only ever encountered before at Meijer Gardens. It's interesting to me because I'd never seen a flower with color variation in only the ...
6
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1answer
138 views

What are those huge plants / fungi on trees called?

I've seen them in Scotland in August 2015: The plants / fungi were quite high (over 2m) on the tree. They are almost circular if you view them from the top, I guess (except for the part where they ...
4
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1answer
74 views

What plant is it?

Do you know what plant is it? I found it in France
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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
48 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
98 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. ...
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3answers
593 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 ...
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0answers
40 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 ...
3
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0answers
40 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 ...
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3answers
11k 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 ...
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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 ...
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1answer
207 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 ...
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2answers
720 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
12 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
35 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
107 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
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2answers
73 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.
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1answer
33 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
54 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
238 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
169 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?
3
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1answer
78 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
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1answer
188 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 ...
13
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1answer
177 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 ...
5
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1answer
418 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
109 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
133 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
71 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
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1answer
98 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 ...