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Questions tagged [plant-anatomy]

The study of the form and internal structures of plants.

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1answer
31 views

How to tell petiole apart from stem?

How to tell petiole apart from stem? Is it by the rule that there is usually a pair of stipules at the base of a petiole?
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1answer
64 views

How do plants take in only carbon dioxide?

There are only 400 molecules of CO2 in 1 million molecules of air. How do plants only take in CO2 but not the other gases? My teacher told me that's because there is less concentration of CO2 in ...
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1answer
69 views

Is pith a ground tissue with no specialized function?

Here is a question from the book My Max Score SAT Biology E/M Subject Test (where the SAT is the exam taken by American high school students): Ground tissue with no specialized function A. Xylem ...
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1answer
40 views

Do plants experience the following feelings

I am not a student of biology,in other words I have not read biology much. But I read that plants have life and so my question is the following: Suppose I take two saplings of two different ...
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17 views

Is there a good source for detailed molecular/atomic information about plant cells?

Can anyone point me to a good source for understanding the molecular/atomic details for the structure of a plant cell? For each element of the plant cell, I want to know what kinds of molecules/atoms ...
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0answers
24 views

Why plant tissues end in -enchyma?

Many plant tissue types end in the affix -enchyma. Etymology: enkhyma "infusion," from en- "in" + khein "to pour" Examples are parenchyma, collenchyma, and sclerenchyma (meaning "to pour beside," ...
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30 views

What's this growing out of my squash?

This weird bubble filled with liquid was growing out of my butternut squash. Can anyone tell me what it is?
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0answers
22 views

Why does the iron content differ in different species on seeds?

Iron can be affected by pH of the soil but why does each species actually have a different iron content. What causes it? What genes cause it?
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16 views

What are some plants or plant forms with only one cell wall?

I was reading about lignin as material for the secondary cell wall. However, not all plants have this. What are some plants that don't have secondary cell walls? Is it all non-trees such as algae?
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125 views

What is this Las Vegas area weed?

This is a picture I took of my mystery weed out by Pittman wash in Henderson NV earlier this year. From my experience this last year, I assume that the plant turns red later in the year and loses the ...
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1answer
71 views

What's going on when roots turn green and grow into the air?

You're looking at a hibiscus and an orchid growing in the same pot. I'm curious why the hibiscus started growing green roots into the air. Or am I looking at a third plant that somehow made its way ...
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1answer
36 views

What are the roundish objects in this figure of a tracheid?

I got this picture from Wikipedia. What are the roundish stuffs that I'm seeing? The link is given below. Also are tracheids sclerenchyma cells? https://i.stack.imgur.com/UEatS.jpg
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1answer
39 views

Why do plant leaves turn yellow?

Why do plant leaves turn yellow if they don't get enough water or get too much water? I want to know the process. I've been searching in Google for an explanation, but none of the sites did. Please ...
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2answers
65 views

Distribution of the number of clover leaves

Being no expert at all in this field I am just interested in emprical studies of the frequency $f(n)$ of clover plants with a given number $n$ of leaves. I would suspect naively from general ...
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0answers
61 views

Mint twisted like a spiral

My friend has a mint plant with a spiral-shaped stem, and the leaves are positioned like this: Why could such deformation happen? Other mint plants, growing in the same pot, are normal.
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0answers
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Fruit-producing water plant

Are there any water plants that grow fruit that is meant to be eaten? I’m specifically interested in plants that are not rooted permanently to the earth but are mobile for at least part of their life ...
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0answers
123 views

Why roots have radial vascular bundles while stems have conjoint?

Why not the whole plant has the same arrangement of vascular bundle, why there is a difference of arrangement in roots and stems (radial in root and conjoint in stem) , what is the purpose of this ...
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3answers
243 views

Why is it that guttation is most commonly observed in the morning?

Knowing that guttation occurs through a plant's hydathodes due to root pressure forcing liquid water out of the leaves, I am curious as to why so many small drops of water are observable on plants in ...
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1answer
166 views

Xylem in the centre of the root

I want to ask a question about xylem in the centre of the root. I am reading a book about transport in plants, and it reads this regarding the root structure: Roots are subjected to vertical ...
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1answer
30 views

How exactly is the wood fossil process?

I would like to know in deep how exactly is the wood fossilisation process. I am fascinated how after millions of years the fossil wood preserves its microscopic characteristics. Look at this cross ...
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1answer
63 views

How do plants grow year after year even though they die?

How do plants grow, die, and then grow again? For instance, when my plants die during the winter, how do they grow again next year? Does it have something to do with the root system? Or do they even ...
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1answer
72 views

Strange Exoskeleton Found in Maine: What is It?

There is a gall like object or exoskeleton attached to a plant stem I have found. At first I thought it was a cicada but it is not. The object cannot be identified by me. Attached are some pictures of ...
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0answers
40 views

water loss from mesophyll cell wall (A-level)

I need help with understanding water loss by mesophyll. My AQA A-level textbook lacks a lot of detail, it says that during transpiration water evaporates from mesophyll cell wall. My question is ...
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1answer
70 views

What are the names of these plants?

I found these plants in my backyard in South Florida. What are they?
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0answers
8 views

What happens to materials filtered out by Casperian strip?

When water is absorbed from soil to roots, it filtered by Casperian strip. Apoplastic pathways become symplastic and the solution moves through cell membrane. So what happens to substances that are ...
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0answers
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Can seed coat protect the seed from bacterial and fungi infection?

When I was doing biology exercise, one question says seed coat can protect the seed from bacterial and fungi infection and the other question says it can't. I searched online and I couldn't find ...
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2answers
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Are agave plants perennial?

If I were to harvest an agave plant for its nectar, would it kill the plant? I have watched videos of the process and it seems quite invasive.
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1answer
41 views

Vine To Tree Root Grafting

I am experimenting with grafting multiple heartleaf philodendrons(philodendron cordatum) to the root of an oak tree(quercus). If the grafting is successful, the next step is to cut the root from the ...
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0answers
26 views

Why do roots and shoots have different budding patterns?

While reading my textbook I noticed that roots and shoots generally branch off from the main plant body very differently. Lateral roots grow off the pericycle, allowing a connection between the ...
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0answers
26 views

What is a 1-flowered raceme?

PlantNET describes the inflorescences of Daviesia acicularis as: Racemes reduced to 1 flower How is a 1-flowered raceme different from a single flower?
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0answers
88 views

How does pH affect the structure, and therefore integrity of plasma membranes?

I know that the pH of the environment does have an effect on plasma membranes, but I'm not sure how exactly the concentration of H+ ions would affect the phospholipid bilayer. Thanks
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0answers
64 views

Putting C4 and C3 plants into a sealed chamber?

I'm planning an experiment that I will do for my biology class, and was wondering what I should expect, as I formulate my hypothesis. I have to enclose a C3 plant and a C4 plant in a sealed container ...
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1answer
230 views

What's the difference between a simple and 1-foliolate (unifoliolate) leaf?

How is a 1-foliolate leaf (e.g., Hardenbergia) different from a simple leaf?
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2answers
114 views

Is the xylem like a tissue paper?

I am a 5th grader learning about the plant transport mechanics and I learnt that the xylem is made up of dead cells.So if water travels up the xylem and water travels only 1 way, is it like how water ...
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0answers
33 views

Function of endodermis

So I know that the endodermis prevents water (and any solutes) from passing through this layer via the apoplast pathway. But what advantage does this (being able to prevent water moving via apoplast ) ...
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1answer
661 views

Are mesophyll cells the same as parenchyma cells?

I read in my biology textbook that ground tissue is constituted by parenchyma, collenchyma and sclerenchyma.It was also mentioned that, in leaves the ground tissue was made up of thin walled ...
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1answer
722 views

What are pit fields?

I found this statement from my biology text book, "The sieve tube elements and the companion cells are connected by pit fields present between the common longitudinal walls". Is the pit field same ...
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0answers
99 views

How do Venus flytraps reset their trigger mechanism when touched only once?

Venus flytrap (Dionaea muscipula) leaves will only close when their trigger hairs are touched more than once within 20-30 seconds in order to keep from wasting energy closing on an object that isn't ...
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1answer
248 views

How do trees grow?

A nail is inserted into a tree's trunk at a young stage of its development. At which height will we find the nail after some years? Will it be found higher or at the same height(What extent of ...
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1answer
336 views

Is it possible to graft plants from different families?

For example, I have some Eastern Hemlock rootstock (Pinaceae), and want to graft a scion from Dawn Redwood (Cupressaceae) onto it. Is this possible? Is anything like this possible?
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0answers
120 views

Does the Histogen Theory apply to plant roots as well as stems?

My school textbook briefly mentions a certain "Histogen Theory" (von Hanstein) of plant growth/development. However, I can't find any authoritative source on this matter online. According to my book, ...
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1answer
41 views

Why are newly grown leaves red?

After a period of heavy rain, several trees in my garden will put out an impressive burst of new leaves, with an incredible vibrant red colour, almost the colour of port wine. The new leaves will then ...
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4answers
741 views

Stomata during night (respiration)

How does carbon dioxide from respiration diffuse out of the leaf during the night? Do stomata close completely during night?
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1answer
764 views

How to correctly preserve organic matter with ethylene and polyethylene glycol?

I am trying to preserve and dye flowers, especially roses. Let me walk you through the process I am trying to optimize: 1) Soaking flowers in 96%-ethanol for a day to dehydrate them. This step ...
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1answer
271 views

Genotype result of double fertilization

So, clearly, the endosperm would be a fusion of the polar nuclei and one male gamete. Does this mean that each male gamete would have a T allele on it? I can't seem to figure out a way to predict ...
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2answers
173 views

Why are the no bioluminescent plants?

There are bioluminescent creatures and some fungi too. As far as I can see there are no bioluminescent plants. Why is this? I imagine it would make a good attraction for night pollinators, or even ...
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1answer
59 views

plant crossing for creating breeding population

I read some material about plant breeding. For a self-incompatible plant with high heterozygosity, it said that after selecting the plant population based on phenotype/desired trait, a cross was done ...
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1answer
675 views

Negative Phototropism In Plants

Why does the root of a plant go away from the sun? The shoot goes towards the sun, why does the root go away from it?
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0answers
46 views

What attaches plant cells to the cell wall?

In animal cells integrins span the plasma membrane and attach the cell membrane to the extracellular matrix. I was wondering how are plant cells attached to the cell wall? Is it just the middle ...
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0answers
415 views

Location of male and female reproductive organs in fern (prothallus)

I can't seem to find an authoritative answer to this anywhere else online. Basically, my school text-book says the antheridium (male organ) is located on the lower surface of the fern prothallus and ...