Questions tagged [plant-anatomy]

The study of the form and internal structures of plants.

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1answer
2k 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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Near-zero water loss in a closed hydroponics system?

I know there are a lot of factors that would impact this... Plant type. Plant neediness (i.e., even sibling plants will possess different needs, defects, etc). Automation efficiency. Water & ...
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2answers
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Can roots have cuticle, especially aerial roots?

In my school biology book, it is written that cuticle covers the epidermal cells in aerial parts of plants and root epidermis doesn't have cuticle. My question is that whether aerial roots, in plants ...
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2answers
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Is this a grass cell?

I found this picture online claiming it was a grass cell. Clearly it is a cross section image but I was hoping you could tell me if this is actually grass, or something else if anything.
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3answers
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Identifying three species of Datura

I have found a large, wild patch, some 200m long, of mainly Datura Stramonium, in our street. I have always been keenly interested and well read on the shamanic, and - very rare - medicinal uses of ...
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1answer
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Difference between vacuolar and symplast pathway [closed]

what is the difference between Vacuolar Pathway and Symplast Pathway ? Is the symplast pathway does not take into account the vacuole to vacuole movement?
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1answer
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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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3answers
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Why should plants transform glucose into sucrose before transporting it to other parts?

I've learned that plants transform glucose into sucrose before sending it into phloem. But the process seems to be complex and energy comsuming. Why should plants do it? Is it really necessary?
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1answer
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What are the roundish objects in this sketch of a tracheid?

I got this picture from the Wikipedia entry for Tracheid. What are the roundish objects in the sketch? Also are tracheids sclerenchyma cells?
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2answers
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Using anatomical terms for human organs and parts of plants

I know how to apply anatomical directional terms (e.g., dorsal/ventral, anterior/posterior, etc.) for animals as a whole (bipeds and quadrupeds). Recently, I've been studying plant physiology, and I ...
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1answer
717 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
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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
50 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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24 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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1answer
198 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
320 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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2answers
166 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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3answers
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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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2answers
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Species Identification: Bulbous root on plant, Southern California, USA

In Southern California, I was pulling out some roots and grasses and weeds in our backyard, and I noticed something weird. It appeared like there was a grape-sized bulb of something connected to one ...
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2answers
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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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1answer
211 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
167 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
235 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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2answers
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Difference between thylakoids and lamellae in a chloroplast?

I'm slightly confused as to the difference between thylakoids and lamellae. My understanding was that thylakoids are 'discs' that are stacked into grana and there is a membrane between the grana ...
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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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1answer
153 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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1answer
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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
51 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
113 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
85 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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1answer
94 views

Reasons for a flower type to consume water faster than another?

This is an easy experiment where you put a white flower into a recipient filled with water and liquid watercolor, so that the flower gets dyed. While doing this experiment for different types of ...
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1answer
279 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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1answer
771 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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29 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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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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2answers
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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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1answer
811 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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2answers
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Where is pollenkitt secreted?

Where is the pollenkitt material secreted? I think the tapetum would be a good candidate, since it provides nutrition to the pollen grains.
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1answer
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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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241 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
51 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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Location of embryo development in angiosperms

What floral organ does the development of the embryos of angiosperms occurs in? Is it the ovary? The pollen tube grows down through the style and double fertilization occurs and the embryo begins to ...
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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 ...
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2answers
278 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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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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How exactly does a plant know where water and light are?

I actually researched on this, but nothing was found regarding this. The only thing I found is that auxins grow on the farthest side causing it to elongate. Yes, but how exactly do the plants know ...
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1answer
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Why will happen if plant phloem does not contain sieve plates?

What are the primary functions of the sieve plates that make them so crucial? I've done a bit of reading online and found "Sieve plates are perforated end walls separating the component cells (sieve ...
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1answer
6k views

Why do bananas grow curved?

This old common question is still not clear to me. I got this explanation: Bananas go through a unique process known as negative geotropism. Instead of continuing to grow towards the ground, they ...
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1answer
214 views

Did I understand the definition of “gross primary production” correctly?

According to wikipedia Gross primary production (GPP) is the amount of chemical energy as biomass that primary producers create in a given amount of time. So if a plant creates 6g of biomass in 1 ...
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What are the microscopic mechanisms of plant branching?

For a long time I've been idly interested in how the shape of a complex organism gets determined during development at a microscopic level. Recently I've realized that plants could be a good place to ...