Questions tagged [plant-anatomy]

The study of the form and internal structures of plants.

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1answer
261 views

What’s the Difference Between Grass and Sedge?

What’s the difference between grasses and sedges? in terms of anatomy and classification.
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1answer
3k views

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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4answers
15k views

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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0answers
79 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....
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1answer
23 views

When the leaf length ranges are given in a plant species' description, what do the numbers in parentheses represent?

Referring to a plant species, a paper I am reading (see citation below) says: "Blades are 4–5(6) mm long and (0.5)1–1.5 mm broad." I understand the numbers 4-5 and 1-1.5 would be the ranges, ...
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1answer
17 views

Is fucus filamentous or colonial algea?

Am a bit new to biology SE. My question is wether fucus is filamentous or collonial form of algea?Does a form of algea have to be collonial or fillamentous or it can be something else? https://en.m....
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0answers
24 views

Function of the 'double' leaf on a pomelo tree

What is the function of the 'double leaf' (I'm unsure what the technical name is...) on a pomelo tree leaf? Furthermore, what evolutionary 'problem' is this structure solving? See image with arrows ...
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2answers
34 views

Are there ontologies for the description of the look of plants?

Are there existing ontologies for the description of the look of plants? I am looking for something formally defined giving me at least or better more information like in descriptions: They are ...
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1answer
45 views

Can we produce sugar using chlorophyll dissolved in ethanol?

I can't find anything about this on the net. I read in my (high-school) textbook that if plants get sunlight, water and carbon dioxide, and the catalyst called chlorophyll, they can make sugar. I'm ...
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1answer
66 views

Visual Quality Indicators for Soil and Plants

I would like to know what are the visual indicators that can be used to determining the quality of the soil and plants by looking at the in-situ photos? Can the following quality indicators be ...
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1answer
411 views

Why are trichomes important for both the roots and shoots of plants?

In what ways are trichomes vital to the plant? Why have them on the plant shoots as well?
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1answer
41 views

Are bryophyte sporangia multicellular?

My research on the matter can be summarized in a sentence: "It [sporangium] can be composed of a single cell or can be multicellular" (Source: https://en.wikipedia.org/wiki/Sporangium). Yet ...
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Is an axillary bud a type of intercalary meristem?

I have read that some cells that are left behind from the shoot apical meristem constitute axillary buds and that these are capable of forming a branch or a flower. So will the axillary bud also be ...
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1answer
171 views

Trees growing around objects vs pushing them away. Where is the threshold?

If a tree grows against a taut wire then the tree will grow around it, eventually enveloping the entire wire. This often scars the tree, and if the wire is thick enough, it will interrupt nutrient ...
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2answers
63 views

Are all dead plant cells (that die to do a job), have secondary wall?

Can we say that all plant cells that die to do a job (they are dead now), like the outer cell surface of the root cap, have secondary cell wall?
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4answers
1k 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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6answers
7k views

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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1answer
24 views

Cellulose structure

In cellulose structure, some beta glucose are inverted. I’ve read that therefore the hydroxyl groups stick on both sides, but aren’t there hydroxyl groups on both sides anyways whether it was inverted ...
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3answers
247 views

Are chilies technically peppers?

Nando's chain of restaurants (UK) refers to chili peppers as just "chilies". My friend and I had a discussion with regard to whether chilies can be called "peppers" or if they do not belong to the ...
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Names for the degrees for symptoms from drought (or other damage) done to trees

Looking out my window, I see trees suffering from drought. I once knew the name for the degrees visible, but I have forgotten and can't find it on the net. Attempt at describing "level of dryness" ...
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2answers
230 views

Stem and Branch of plants

What is the difference between the stem of a plant and the branch of a plant. Is the branch part of the stem?
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1answer
35 views

What did Darwin mean by “degraded flowers”?

One of the chapters of The Origin of Species says that "Certain plants, belonging to the Malpighiaceæ, bear perfect and degraded flowers;" Full passage for context Do you know which plant ...
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0answers
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Is it possible to accelerate active transport in plant vascular system using some electronic method?

I am from electronics background and got an understanding that electrical current affect plant growth. Based on this phenomenon, I got an idea but before I formulate my hypothesis and start ...
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1answer
65 views

Why do meristematic cells have prominent nuclei and dense cytoplasm?

I've been reading about meristematic cells having prominent nuclei and dense cytoplasm. However, I could not understand why it is that way. Could somebody please explain?
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1answer
104 views

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 is the name of the groove down the middle of an anther?

I thought it had a name along the lines of interlocular groove, but I haven't been able to find that term anywhere.
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1answer
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What is this unusual structure inside this banana?

I was eating a banana, and I found this strange biological structure inside of it. It was a bit tougher than the banana, and ran inside of the body through most of the length. To be clear, I peeled ...
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1answer
554 views

What are the main differences between tubers and taproots?

From reading accessible information about tubers and taproots I recognize that the main differences between tubers and taproots (as well as a fibrous root system) are: Shape Different nutrient ...
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1answer
167 views

Hollow stalks in celery

When cutting a section of a celery plant stalk it appeared hollow inside, i.e. the cortex was hollow and encircled by the cambium, the vascular bundles, some cortex and the epidermis layer, thus the ...
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2answers
99 views

Are there organisms that “branch more” near the leaf?

(I'm a computer scientist) Tree branching is a fractal patterns in nature. I know stems typically branch in two at each level (self-similarity). I guess there are plants or other organisms that ...
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0answers
21 views

Are Hsp70 proteins only activated in response to heat shock?

Hsp70 proteins are chaperones that assist in protein folding in my plant physiology textbook it says the Hsp70 proteins were discovered by inducing heat shock. But do they only work in response to ...
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1answer
254 views

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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3answers
142 views

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
1k views

Why does spiral or annular thickening occur in water conducting plant vessels?

From what I behold, spiral and annular thickening of xylem and trachied cell walls leaves a lot of not thickened regions of cell wall. Lignin is the material which prevents water from escaping these ...
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1answer
2k 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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1answer
80 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
171 views

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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0answers
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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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2answers
36 views

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
347 views

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
915 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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4answers
5k views

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
1k 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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1answer
43 views

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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0answers
153 views

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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1answer
76 views

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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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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0answers
22 views

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
2k views

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 ...