Study of the normal functioning of plants and plant cells

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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 DWC system. Each plant was transplanted in rockwool with netpots and clay pebbles. But I need to periodically and accurately measure ...
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1answer
3k views

What is it that creates that wonderful smell after a fresh rain?

I've heard that the wonderful smell of a fresh rain is actually chemicals released from the trees and grass and other plants. What is the process that allows these chemicals to be released? What ...
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19 views

Accuracy of best plant growth models?

Given a plant $P$, predict its height $H$ at time $t$ since planting given some environmental variables $E_1, \dots, E_n$. How accurate are the state-of-the-art models for such thing? What data is ...
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37 views

Where is ATP used in Phosphorylation?

In the section describing the Calvin Cycle, under the subheading "Reduction", my textbook states that: The steps involve utilisation of 2 molecules of ATP for Phosphorylation... I could not get ...
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103 views

Can carnivores survive on a (processed) vegetarian diet? Why or why not?

There are many differences in for example the digestive system between carnivores, herbivores and omnivores. It seems that in certain kinds of species adaptability with respect to diet is possible. ...
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77 views

Can plants live forever? [duplicate]

I know that some plants die for old age like a lettuce. But there are trees like Baobabs or larger Ficus in the tropics of whom we don't know their age. And trees like spruce reaching 9950 years old, ...
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59 views

Viruses selected by evolution

First let me apologize in advance for I know almost nothing about biology. I had a conversation today with a family member who is a bio-computer-scientist and he talked to me about what his colleagues ...
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1answer
50 views

Which are mobile and immobile elements in plants?

I am confused with this element or nutrient classification in the plants, since some authors set elements like $\ce{S}$ and $\ce{Ni}$ as mobile and other as immobile elements (Citation 1, 2, 3, 4, 5). ...
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48 views

How do roots obtain nutrition?

I have a city garden (see picture below) and yesterday I was nurturing it and I pulled up a small plant. I saw its root system and laid it in the sun to dry a bit and then scraped of the rest of the ...
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17 views

Book-recommendation: plant biophysics [closed]

I'm a physicist by training am looking to learn more about the biophysics of plants. Can you give me your recommendation of good resources on plant biophysics? Books are preferred.
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24 views

Solidification of coconut water

At first, the coconut is filled with liquid endosperm. Later when it ripens, the outer layers form brown fibrous covering, and the inner solid layer turns brown and hardens. Within that, a white layer ...
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61 views

How does CO₂ concentration affect photosynthesis?

I have heard the theory that with the increase of CO2 in the air, the speed of the photosynthesis would increase, thereby limiting the increase of CO2 levels. What is currently the rate limiting ...
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71 views

Why are there more stomatal openings on the lower surface of a dicot leaf?

This causes more transpiration to occur from lower leaf surface. What's the exact reason for why are there more stomatal openings on the lower surface of a dicot leaf?
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53 views

Determining how much energy a plant takes in?

I asked a question on WorldBuilding.SE, "Are diamond berries possible?". This led to asking a question on Chemistry.SE about the amount of energy required to burn a 1 ct. diamond (−6.527kJ). The ...
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21 views

Why is translocation of food in the phloem still a debate?

I currently take tertiary-high school biology and I am taught that translocation of food in the phloem occurs by the pressure flow hypothesis. I would like to ask why it is still a hypothesis, and ...
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39 views

How did the introduction of artificial light changed the life cycle of a plant?

Plants in urbanized areas are constantly exposed to artificial light after sunset. In their natural habitat there is a more distinct day and night cycle. Since light is an important factor in a plant ...
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20 views

Alder Tree Root Nodule Origins?

I recently found out that alder trees have root nodules which contain nitrogen-fixing bacteria and that alders are primary colonizers in primary succession. That leads me to this question: since there ...
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1answer
76 views

Why is it harder to sequence plant genomes than animal genomes?

Plants seem to be less complex organisms than animals, but despite that there are less plant genomes sequenced. Is that because plant genomes are more complex, for example in terms of regulatory ...
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67 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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74 views

Measuring a plant's electric activity any instructions where to place electrodes?

I would like to measure a plant's electric activity / voltage, I've looked online to find out where to place the electrodes and what type of electrodes to use but they seem to very wildly. Any ideas? ...
2
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1answer
45 views

Which sources can I use to study botany and horticulture?

I refer with this question to those among you who have a strong background and work in fields like: botanics, horticulture, dendrology, etc. I would like to start building a solid preparation, both ...
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1answer
50 views

Is Norway spruce (Picea abies (L.) Karst.) isohydric or anisohydric species?

Question from a thesis defense list ask me this. But I can't find the exact answer on the internet or in books. In my thesis, I described isohydric plants, for example maize, lupin, pea, poplar. This ...
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37 views

why plants cannot use atmospheric nitrogen? [duplicate]

Earth's atmosphere constitutes 78% of Nitrogen, then why do plants need to absorb Nitrogen from the soil. Why couldn't it possible for them to absorb the atmospheric Nitrogen like they do in the case ...
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56 views

What's the (or some of the) minimum(s) amount of atmospheric carbon dioxide needed by plants?

We currently have a problem of increasing CO2 in the atmosphere. But assuming we find a way to carbon sink it, what is the minimum CO2 we need to leave in the atmosphere to provide a source for ...
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66 views

What are the white spots?

What are these white spots? It's like Braille writing or something. How is the appearance encoded in the plant? (which I think is a Pine, though I am not sure).
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146 views

Is there a fundamental reason that plants cannot fix their own nitrogen?

Plants must have nitrogen to grow. According to the answer to this question, there are no plants can fix their own nitrogen (without the help of bacteria). Plants get their nitrogen in the form of ...
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39 views

Total dark deprivation at day-neutral plants

First of all, I am not a biologist. Almost for a week, a question has come to my mind: "Is it harmful ceaselessly exposing a plant to light?" (I mean with natural & artificial light with ...
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1answer
53 views

Do all sources supply all sinks on a plant?

Sources include any exporting organs, typically mature leaves, that are capable of producing photosynthete in excess of their own needs. Sinks include any nonphotosynthetic organs of the ...
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133 views

What are the requirements for a stable carbon cycle in sealed “bottle gardens”`?

The most famous example of a sealed bottle garden is David Latimer's bottle with a Spiderworth plant, pictured below, which has been sealed for 40 years. My own attempt at a bottle garden is failing ...
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168 views

What allows Valonia ventricosa cells to 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. Weirdly, a lot of the literature covering these organisms ...
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28 views

What is the fruit of Café marron (Ramosmania rodriguesi) like? [closed]

I have read the article about Ramosmania rodriguesi (Café marron) and I've grown intrigued about what the fruit of this specie tastes like? Moreover, is it edible or "brew-able"? The only pictures ...
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2answers
70 views

How to preserve leaves between sampling (collection) and analysis?

Suppose I spend a day in a forest, collecting different kinds of leaves, which I would like to analyze under a compound microscope. Now, obviously, measures should be taken to preserve the leaves some ...
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19 views

How to study the number of herbivores per type of tree and time of day?

Suppose I want to find out the number of herbivores in different kinds of trees, and also compare the numbers between day and night. How would this kind of study be run in practice? It easy to think ...
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Which biosynthetic pathways take place in the plastid and were are they located?

I know that the isoprenoid, jasmonate, glucosinolate, fatty acids, chlorophyll, starch, and aromatic amino acid syntheses are located in the plastid. But I don't know if they are located in the ...
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34 views

How to measure chemical elements in soil? [closed]

What sort of equipment would one need to ensure that plant soil contains the right concentration of the 13 mineral nutrients necessary for plant growth? As far I understand, it's vital that all the ...
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37 views

Is there any tree or other plant that produces a new crop in fast cycles? [closed]

Is there any tree or other plant that produces a new crop in fast cycles? By fast I would mean something much more often than once or twice a year, like every month or every few weeks. What is the ...
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1answer
25 views

Plant dependence on CO₂ levels

I was wondering which kind of plants would survive longest without CO2 : plants with fatty, thick leaves or plants with thinner, less fatty leaves? And can we conclude that the plant species that are ...
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1answer
21 views

What controls Fructose regulation in plants?

Sugars are found ubiquitously in plants and are regulated. For sucrose it's pretty straightforward - it's basically kept at a low ish level, and put into storage or other intermediate compounds. ...
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1answer
47 views

What equipment is needed to perform simple plant electrophysiology?

What is the minimum needed equipment to perform simple plant electrophysiology? I am looking for some simple experiments that I could run at home for learning. Ideally, I would transfer the skills to ...
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45 views

How to measure concentrations of different metals from the environment?

Suppose that different kind of metals and chemicals (e.g. magnesium, sodium, copper) got transmitted to environment e.g. as a cause of an accident. How would measure the levels of those metals and ...
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202 views

What does “chlorophyll photosynthesis peak” mean in relation to photon wavelength?

When reading about how green / leafy plants work, I saw that they have chlorophyll A & B, which allow the plant to use the energy from light by capturing and transforming. When reading about ...
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Why do Sorghum Bicolor leaves roll up?

In A level Bio today we talked about abcesic acid as a stress hormone, and its ability to reduce osmotic potential around guard cells to close stomata. My question is, is abscesic acid in sorghum ...
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Can different strains of Rhizobium share an infection thread or symbiosome?

Rhizobium infection can be triggered at root hairs of legumes, creating infection threads. Can these infections threads be colonized by more than one type of Rhizobium (e.g. Fixing and non-fixing)? ...
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34 views

Rosemary room temperature at winter

I consistently read in non-scientific resources that I have to put my rosemary to low temperature (about 10°C) in winter (unless I don't want it to freeze). I googled, but I fail to find a scientific ...
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105 views

Why vivipary is not found in all mangrove plants?

An interesting characteristic feature of mangrove plants is vivipary or viviparous germination...but some notable members of the family like Heritiera sp.( there is even a mangrove forest named after ...
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126 views

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 ...
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102 views

Is it possible to simulate the effects of high altitudes for plants?

Note- I considered asking this on gardening.stackexchange.com but i believe it is better suited for this site since it deals with more complicated material. As I understand it, certain plants ...
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How many cells are there in the apical meristematic tissue?

How many cells are there in the apical meristematic tissue? Looking at this picture... , I would tend to think that there are few hundreds cells in the meristem tissue. But I guess this is a ...
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Fe(II) and Fe(III) transport from rhizosphere across plasma membrane

Does the graminaceous plants have passive uptake of Fe(II) via a passive Fe(II)-transporter enzyme? Or it it only dicots and non-graminaceous plants that have the Fe(II)-transporter enzyme? Also, can ...
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Is chloroplasts per cell indicative of the photosynthetic power of a plant?

Plant-A has on average N chloroplasts per cell. Plant-B has on average M chloroplasts per cell. If N > M, is plant-A more efficient in turning carbon dioxide into oxygen? Also, is it possible to see ...