Questions tagged [growth]
In reference to a biological system over time, growth refers to the increase in physical size/mass as well as the progression through its life cycle.
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If a coast redwood tree had unlimited resources (nutrients, water, food and energy), is lignification the speed limit that prevents rapid growth?
I'm working on a hard sci-fi concept and I'm trying to figure out the absolute theoretical limit for how fast a coast redwood tree could grow if we removed the standard environmental bottlenecks.
I'm ...
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For which human tissues does the protein USAG-1 inhibit growth?
Recently,
Japanese researchers, led by Dr. Katsu Takahashi at Kyoto University,
are developing a drug to regrow teeth by targeting the USAG-1 protein,
which normally inhibits tooth growth. The drug ...
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Is there a study characteristic of needed NKP of a plant respect to time or growing phase?
This is question 90% agriculture. I don’t know if there is any site about agriculture like SE, couldn’t find. I so apologize for putting this question here. Anyway the question still relates to ...
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Fourier cycles in growth curves
Is there any literature on Fourier analysis of growth curves, for example identifying Fourier cycles in population growth? If I do such an exercise what insights can we get from it?
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Whats the difference between the term "open" growth and inderterminate growth in plants?
My textbook has a paragraph whose heading itself is
"Plant Growth Generally is Indeterminate"
and in that paragraph it says
The cells of such meristems
have the capacity to divide and ...
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What would be the growth rate in the following scenario?
In my textbook the exponential growth rate is described as
$$W'= W e^{rt}.$$
Here $W'$ is the final size, $W$ initial size, $r$ growth rate and $t$ time.
I wanted to have a clear mathematical ...
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When do growth curves "reach maximum"?
I have been reading about growth curves, specifically those with upper and lower asymptotes, which have been asked about here before. See also Tjørve & Tjørve (2017).
In these models, is there a ...
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How do roots of a seedling know the direction to grow?
When a seedling starts to grow covered by soil, I thought directions are clear:
Roots grow following gravity (down to the water), and the cotyledons
(right word?) grow against gravity, so that they'...
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Reasons behind the sticky substances are used by poplar in buds
It is well known that sticky poplar buds falling on a car can seriously damage the paint. Also these scales from poplar stick to the paws and fur of animals like Velcro. Personally I don’t think the ...
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Which plants are best for experiments about plant growth? [closed]
I was assigned writing a term paper about optimizing plant growth using control systems. This assignment is part of a class on sustainable energy usage, which means it's primarily on physics and ...
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Is it viable to make liquid potassium ferilizer through dissolving very small amounts of potassium chloride in water
I wasn't able to find fertiliser online that was simply potassium chloride and I didnt want to source my potassium chloride solution from potassium sulphate or other general NPK fertilisers for my ...
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Sigmoidal Curve in Geometric Growth
Here is an excerpt from my textbook:
Let us now see what happens in geometrical
growth. In most systems, the initial growth is slow
(lag phase), and it increases rapidly thereafter – at
an ...
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Auxin-what happens to the auxin chemicals if the Sun is just above the plant?
The Auxins goes to the shady side for the elongation of the cell. This moves depending on the direction of sunlight. But, what happens to the auxin chemicals if the Sun is just above the plant?
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Larval abalone devlopmental times - what does ~ °C.days or °C hr-1 mean
I'm looking a number of papers on abalone larval development and the term °C.days or °C hrs-1 keeps coming up. The numbers before these terms are much larger than they would be if this term actually ...
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Refuge impact on growth rate
I have a question related to the refuge effect in ecological models. The assumption is that the population of hosts/prey is divided into two groups. One group consists of individuals that are safe ...
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