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

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2answers
232 views

Indian tropical fruit trees and fruit bearing

Most Indian tropical fruit trees produce fruits in April-May. The best possible explanation for this is optimum water availability for fruit production. the heat allows quicker ripening ...
4
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1answer
51 views

Determine which seed will germinate first

I recently studied about plant physiology for a test. Strangely, there was this question which I had no idea how to approach. The question is, Which seed will germinate first? a) Castor b) Wheat ...
3
votes
1answer
101 views

Why is photosynthesis so complex?

Actually, what is the need of such long procedure? As much as I have understood, the sole purpose of photosynthesis is to synthesize carbohydrates, which is only used for energy storage. So, why don't ...
9
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1answer
125 views

Why aren't plants' roots as diverse as leaves?

I have been doing some gardening recently and I suddenly realised that all plants have superficially identical non-woody roots of the same size from gigantic trees to small fruiting plants and ...
-1
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1answer
61 views

What are allogametes? please explain [closed]

Allo means different or unrelated I guess.Please clear me the meaning with some examples.
6
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1answer
60 views

Is there a model perennial plant species?

Most of plant science is conducted on small annual species with short life cycles; predominantly Arabidopsis thaliana, but also a handful of others like Oryza sativa and Medicago truncatula etc. Is ...
3
votes
1answer
41 views

What are the hairs/spikes on the edges of these leaves for?

Windows 7 has a wallpaper/background which shows an attractive, leafy plant with fine hairs or spikes on the edges. What might these be for, and what sort of plant is it? My initial (uneducated) ...
2
votes
1answer
46 views

Can galls be formed from mutualistic relationships?

According to Wikipedia, galls (cecidia) are formed by parasitic insects and mites like gall wasps (Neuroterus albipes). At some metamorphic stage, these organisms alter cell division processes in ...
3
votes
0answers
56 views

What is the advantage of using plant-derived antibacterials rather than bacteria-derived antibacterials?

So obviously we have a big problem with antibiotic resistance. Most of our antibiotics originate from bacteria themselves (or are synthetic variations on scaffolds which originate from bacteria). I ...
0
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0answers
17 views

Machine-readable APG III trees?

Does anyone know where I can find a machine-readable version of the phylogenetic trees from APG III? I'm looking for something that contains the full tree structure, including unnamed branches. ...
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0answers
22 views

How does the shape of the structure explain the function of that structure in both plant animal cells? [closed]

Could some please tell me how the structure explain the function of something in plant and animal cells, it is in middle school level.
6
votes
2answers
223 views

How do plants get their O₂ for respiration during the night?

If I am not mistaken the stomata are closed during the night. As a result I have a hard time to imagine how the plant can get the O2 it needs for respiration during the night. I thought the plant ...
1
vote
0answers
37 views

“Signal Advance”: Unsure of meaning or contextual use

I am reading through Recombinant DNA; Genes and Genomes - A Short Course - Third Edition by James D. Watson, et. al. and I came across this paragraph in the discussion about discrete factors of ...
1
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0answers
18 views

Yew seed dormancy reduction

Yew seeds have very long dormancy when artificially planted. They are also adapted to passage through digestive systems of animals that eat/transport them. But could the dormancy be shorter (or the ...
5
votes
2answers
51 views

What is this species of tree?

In my city, there is a unique tree, with thorns all over it. I would like to know - what species is this?
2
votes
1answer
69 views

What is the lifecycle of hanging woody vines?

In the first ten seconds of this video, you can see a vine that appears to have started its life 60 feet up in a tree and has now grown down almost close enough to touch the ground. I have seen ...
0
votes
0answers
15 views

Pepper plant leaf curl and “sweating”

The "sweating" and leaf curl have been going on for about a week. I've done some extensive googling and have found mixed diagnoses. For context, the ambient temperature is 74°, I'm using 6,500 K lamps ...
1
vote
1answer
36 views

gene transformation from plant to plant - transgenic plant

I want to know if the expression of a transfered gene depends on source of the gene, if e.g.: 1] I isolate a gene from plant and transfered it to the same plant? 2] I isolate a gene that is highly ...
3
votes
2answers
51 views

Why Isn't mineral transport in xylem multi-directional?

According to our textbook, Xylem transport is only unidirectional while transport through phloem is multi-directional. But minerals are taken up by xylem from the surrounding tissues actively, and ...
2
votes
1answer
110 views

Why would the citrulline content of the watermelon be so high?

Citrulline is a non-proteinogenic amino acid (that is, citrulline is an amino acid that is not coded for in mRNA), and it is an important metabolic intermediate in the Urea Cycle. The Urea Cycle is ...
2
votes
1answer
112 views

Photoperiodism: Short-Day Plants

My Campbell's Biology textbook discusses photoperiodism of plants and introduces us to short-day and long-day plants. What I don't understand is why short day plants will not flower if they are ...
0
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0answers
10 views

Why guard cells need to turn malate into postassium malate to become turgid?

According to the Active Potassium Transport Ion concept given by Levitt et.al, stomata open due to turgidity in guard cells. It seems that guard cells turn the starch produced by photosynthesis into ...
-1
votes
1answer
81 views

How do house plants affect the quality of air in a house? [closed]

Do house plants affect the air in the house by taking it from the rooms and it is put in the dirt to make it moist then we have no air.
3
votes
1answer
27 views

Santa Fe xeric indigenous tree

The hills around Santa Fe are covered in a particular xeric tree which is quite small and looks like some kind of juniper which I have been unable to identify: What is this species?
5
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0answers
32 views

What type of tree is this?

I photographed this group of trees a couple of years ago at the northern tip of Prudence Island in Narragansett Bay. Any idea what species these are?
1
vote
3answers
40 views

importance of cDNA sequencing of a specific gene in different plants

i want to know what if i made a sequence of cDNA of a specific gene in different plants - what is the important from the sequence and can if found difference between plants , and can i use this ...
3
votes
2answers
497 views

Do aquatic plants have stomata?

I am wondering if aquatic plants have stomata or not. I know that non-aquatic plants have stomata to release water(transpiration) and oxygen, and to take in carbon dioxide. Do aquatic plants also have ...
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0answers
27 views

height and bryophytes

Why does being taller provide advantages for Bryophyta but being shorter is better for Marchantiophyta? What disadvantages could being taller have? I think that by being taller, you have ...
2
votes
1answer
148 views

How does one calculate the amount of oxygen produced by trees?

I'm currently working on a project to measure the impact of tree planting. Calculating the amount of oxygen seems harder than I imagined. Of-course there's the type and size of the tree and the ...
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1answer
42 views

What is the leaf venation of a scuppernong vine leaf?

I googled around and I didn't find anything that says its leaf veination. Anyone know?
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0answers
52 views

Is there a plant particularly suitable for absorbing Hydrogen Sulfide

I live in an area with some open sewers and in the morning I can usually can smell the gas inside my house. There are many plants like snake plant which improve indoor air quality but I was ...
4
votes
2answers
93 views

What plant is this?

It was all along a fence in a downtown core in Ottawa, flowering in November. I didn't get a better close-up of the flower itself, I had thought the leaves would be pretty important.
3
votes
1answer
78 views

Do lunar rhythms have really impact on plant growth?

It is commonly known that lunar rhythms have influence on plant growth, and there are even lunar calendars to know when planting, pruning, transplanting, harvesting, etc. I know that the lunar cycles ...
3
votes
1answer
1k views

The mystery of coconut tree

Could anyone please explain to me, why the nail which is nailed in a coconut tree is not raised from ground level, when the tree is growing up?
3
votes
1answer
83 views

Needle-like crystals observed in wild-grape wine under microscope. Potentially harmful?

I recently crushed and strained about thirty pounds of wild grapes to ferment into wine. About a month in, I did a visual inspection of the wine under microscope to try and identify some yeast and ...
3
votes
1answer
33 views

Brandywine Maple?

I'm collecting and classifying leaves for biology. Teacher took us on a 'walk' to help. She let us pick and told us one leaf was a Brandywine Maple and another later on, a different leaf, was a Red ...
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0answers
11 views

Why do chlorotic leaves have green veins?

If chlorotic leaves are chlorophyll deficient, why should the veins be green? shouldn't all the available chlorophyll be directed to the leaf lamina?
3
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0answers
45 views

Aloe species identification

I am trying to find out which species these are. Someone claimed they were Aloe Vera, but I am skeptical as I have never seen Aloe Vera with that kind of growth. These look more like Aloe Juvenna to ...
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0answers
27 views

Can epiphyte share nutrient to host plant?

Sometimes plant share their nutrient with underground root network But if there are plant that grow on other tree. Is it possible that it would merge into another tree and sharing resource. I mean ...
5
votes
1answer
1k views

If oxygen is such a good energy source, why do plants release it?

Why do plants release excess oxygen, rather than consuming it entirely given it is an excellent energy source?
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vote
3answers
214 views

Doubly-compound leaf examples?

I've got a project where we collect leaves, classify them, etc. There are some required classifications. One of the requirements is to get a doubly-compound leaf. What are some trees that are ...
1
vote
1answer
95 views

Is there an evolutionary advantage for coconut oils to be rich in saturated fats?

I know that coconut oil is composed of multiple saturated fatty acids, but is there a reason why this would have increased the fitness of the coconut plant?
0
votes
0answers
14 views

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 ...
4
votes
1answer
55 views

How do I read a species description that uses both ≡ (triple bar) and “incl.” to denote synonymy?

I'm trying to understand the relationship of plants formerly classified as Dorstenia crispa with distinct individuals continuously classified as Dorstenia foetida. I would assume that the distinctive ...
2
votes
1answer
51 views

Difference between the P4 and P5 subtypes of P-type ATPases in plants

In plants there are various kinds of P-type ATPases. What is difference between P4-ATPase and P5-ATPase?
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0answers
24 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 ...
1
vote
1answer
73 views

Genomic DNA isolation from wheat

Can I use dry seed, wheat for example, in place of young leaves for isolation and purification of genomic DNA for PCR amplification? The goal of my experiment is to validate a novel gene which is ...
3
votes
0answers
51 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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0answers
43 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.
8
votes
1answer
104 views

Help Identifying Tree

I live in the upper southeastern region of Arizona in U.S. There's a type of tree growing in my back yard that I can't seem to identify. Its growing in an arrangement very similar to an ocotillo ...