Questions tagged [plant-anatomy]

The study of the form and internal structures of plants.

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75 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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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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Is the quiescent centre only found in monocot roots?

I read that the quiescent centre is present between the dermatogen and calyptrogen. As calyptrogen is only present in monocot root, does that mean quiescent centre is only found in monocot roots?
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What does basipetal succession (of flowers/leaves) mean?

The definition says that basipetal succession is the arrangement of flowers such that the older ones are present at upper side and the young flowers are arranged towards base. But in this diagram: ...
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Is there any double staining method to visualise separate colour for plant tissue and fungal tissue?

Is there any double staining method for developing separate colour on fungal tissue and plant tissue when the said 2 types of tissues are intermingled? Unlike my previous question, this question not ...
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How can I stain only the Chitin but not Cellulose or Glucans?

Is there any stain, that binds specifically to chitin but not to cellulose? (for differential staining and double staining purpose) It seems the lactophenol-cotton blue, aniline blue, trypan blue etc ...
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2answers
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Why are hydathodes called hydathodes and not hydrothodes? [closed]

I can't seem to find any etymological root for the hyda- in hydathode. I expected the water-relater structure to be called a hydrothode, but it just isn't!
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1answer
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Is it normal for corn to have multiple ears in one place?

I have (out of a mistake) one corn plant in my greenhouse and it made 4 cobs in one place. Is that normal?! I never saw something like this before.
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1answer
456 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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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 doubly-...
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1answer
659 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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What predates on cactus in the Atacama desert?

Introduction Last week, I was in the Atacama desert where I've seen many cacti. Some / many of them were seemingly suffering from predation. Most of predation seemed to be on cardón, often restricted ...
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Reason behind colour of hibiscus and sunflower [closed]

What is the reason for the red colour of hibiscus and the yellow colour of sunflower?
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What determines the spiral direction of plants?

Some plants and vines spiral clockwise as they go along (right direction) and some spiral anticlockwise (left direction). What determines which direction they spiral along? At first, I believed it to ...
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What is the accepted theory of root and shoot apical meristem organization?

I learned many theories of root and shoot apical organization. Histogen theory, Haberlandt's division of eumeristem, Tunica corpus theory and cyto histological zonnation theory. But which is the ...
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21 views

Apoplast pathway, down a water potential gradient or not?

So, I was doing a AS level MCQ, the question tells us that water passes across the leaf tissues by different routes as a result of 1) differences in water potential 2) the pull transmitted by ...
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1answer
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What kind of house plant is this?

This is a house plant I have that I love but I don’t know what it’s called. I’d love to research it and even buy more but it’s name is a mystery. Picture taken in Ontario, Canada.
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How do phloems have diffuse solids?

If phloems transport mainly sucrose and not water, then how does a phloem cell diffuse sugars up and down the structure?
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Pits, symplastic or apoplastic pathway?

After water has moved through the endodermis through the Casparian Strip, water continues to move down the water potential gradient into the xylem vessels through the pits, is movement through the ...
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1answer
384 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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How long can cytoplasmic streaming be in an isolated leaf?

Here is an interesting video demonstrating the effect of cytoplasmic streaming: cytoplasmic_streaming of a leaf We see the leaf has been isolated from its original body. I wonder how long can this ...
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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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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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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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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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How do the flowers of Diphylleia grayi become transparent after rain?

Known as the skeleton flower, its flowers turn transparent in rain. How does it do so? How can it gain transparency in rain when water is already present in flower? Or is it because other components ...
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1answer
232 views

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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What is the difference between pits and perforations in xylem?

What is the difference between pits and perforations in tracheids and vessel elements? Based on the diagram in this website, are they both simply holes? If so aren't pits and perforations (or pores) ...
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solute potential of guard cells in stomata increases with glucose but not with starch

In sugar starch theory and potassium ion inflow theory the solute or osmotic potential increases with glucose, in guard cells but not with starch why? The same case is with malic acid i-e the solute ...
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Why do plants store energy as carbohydrates and not as fats?

In my introductory biology class, we are learning about biomolecules. The textbook says fats are a more efficient energy store than carbohydrates. So my question is - why would plants store their ...
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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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How does salt content affect flowering of halophyte?

My teacher told me that one adaptation of halophyte is that they flower at specific time e.g. rainy season to reduce salt exposure (as salt content affects flowering of plant thus affect the ...
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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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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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442 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
44 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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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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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
133 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
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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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1answer
128 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
164 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
807 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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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
59 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
109 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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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.