Questions tagged [plant-anatomy]

The study of the form and internal structures of plants.

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1answer
713 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
254 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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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
2k 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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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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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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1answer
228 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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87 views

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
145 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
2k views

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
121 views

What is this growth on a Rosa rugosa stem?

I saw many of these on my big old Rosa rugosa bush yesterday. What are they?
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1answer
93 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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Please identify this plant

I don't know anything about plants
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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 ...
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1answer
427 views

What types of plants are Gibberellin used on?

On what type of plant (monocot/ eudicot? family? species?) is Gibberellin used on? I searched through many sources but could not find whether Gibberellin works for all plants or just a specific type ...
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2answers
691 views

Books for learning how plants function

Can you recommend a good, detailed book on how plants function? A book that explains plant processes on a molecular level from roots up to the fruit. I am interested in home crops production, such as ...
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1answer
198 views

What are these bumps on tomato stem?

What are the bumps on this tomato stem? They are way off the ground so I doubt they are air roots. What are they, what function do they have and why do they form?
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1answer
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Why does spraying water on plants help them survive in case of frost?

I've heard that spraying water on plants will help them survive the frost. Why is that? Some say that you should do it in the morning right before the sun rises, and others spray water the whole time ...
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1answer
618 views

What causes leaves to be hydrophobic?

In my garden, I'm growing broccoli. I was spraying it with water the other day, and I noticed that water bounced off the leaves. When I just misted it instead of a full-on spray, the water beads ...
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147 views

Where does oxygen come from in winters? [closed]

Since plants shed their leaves and don't perform photosynthesis during winters, where does oxygen come from?
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1answer
870 views

How do plants maintain air spaces in leaves?

As we know, there are air spaces in the mesophyll layer which allows carbon dioxide to diffuse in and oxygen to diffuse out, but cell membranes are partially permeable and allow water to diffuse to ...
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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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1answer
56 views

Plant Nutrition

Alfie has two plants, A and B. He used some Vaseline to coat the top of the leaves on plant A and the underside of the leaves on plant B. He left the plants on the windowsill for a week and watered ...
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Why do certain ferns have roughened spore surface?

Ferns such as Anemia phyllitidis, Blotiella lindeniana, Ctenitis hirta, Cystopterix fragilis, Hemionitis palmata and many others have roughened splity spore surface. I ask, why is it evolutionary so?...
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135 views

What type of subsoil root structure provides better plant anchorage?

Which type of root is better for good anchorage for small plants: tap roots or fibrous roots?. How about for trees: tap root or a fibrous system?
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1answer
162 views

Why is pith of Cucurbits hollow when mature?

What is the evolutionary significance of pith in cucurbits? Does it serve a function by being hollow? Or is it an evolutionary vestige? What function would it have had in its ancestors?
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1answer
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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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3answers
737 views

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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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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0answers
112 views

Separation of sister chromatids diring anaphase without Centrosomes in plant cell during mitosis

As in animal cell during mitosis sister chromatids are separated from each other during Anaphase by the pulling of kinetochore fibers toward their originating poles of centrosomes but as we know that ...
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4answers
14k 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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1answer
77 views

Why are peas in mendelian genetics different?

In mendelian experiment, yellow seeds were seen to be dominant over green seeds. The peas I've seen are generally green and not yellow. Did he use a different variety of pea plant ? The other trait ...
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120 views

How does P-protein (phloem) help in sealing of wounds?

While I was reading a book I found that "P-proteins in the sieve elements of phloem help in sealing of wounds along with callose". So how does p-protein do that, moreover how can it reach to other ...
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1answer
2k views

Why are root hairs mostly unicellular?

Most root hairs are unicellular but why is it so? What advantages does a plant derive from a unicellular root hair that it couldn't have if it was multicellular?
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1answer
198 views

What's this spring-like structure in the plant parenchyma cell?

I observed a transverse section of an amaranth stem in biology lesson today. When I boost the magnification to 600X, I found this spring-like structure in one of the parenchyma cells near a vascular ...
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1answer
112 views

Valve-like layers example in nature?

I am searching for an example in the nature, where a layer of something (skin, coat, film etc) can allow fluid to flow trough (not absorb) from one direction and prevent/repel from other direction. I ...
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1answer
228 views

What is the difference between intials cells and meristems cells?

Generally plant tissues: meristems tissue: meristems cells, apilal meristems, lateral meristems Non meristem tissue: dermal tissue, vascular tissue, ground tissue my question: What is the ...
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1answer
456 views

Plant growth in blue light

For the past two weeks, I have been in a group of 3 studying how different lights affect plant growth. So we growth two chickpeas plants and put one in white light and the other in blue light. These ...
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1answer
269 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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143 views

Is this pollen?

The small round "pockets/buns" in the image. I am almost sure it is, but maybe someone knows more. Sample comes from (50.156992, 12.532546) (Google coordinates). It is a re-cultivated tailing in the ...
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0answers
116 views

Moss CO2 consumption

I wish to calculate how much CO2 would a sq m of moss fixes to glucose in one day, taking about 20 degrees C average temperature, 55% humidity and a regular 8 hour day. Water and nutrients are at ...
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1answer
76 views

Can some one identify this plant with really sweet smelling flowers?

Could someone help identifying this plant? The flowers on it have a very sweet smell, similar to the night queen.
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2answers
113 views

Thin layers or laminae that make up a single summer band in tree ring, what are they?

I took the photograph below of some tree rings. Each division on the ruler is 1 millimeter: Each tree ring (the areas between the pizza crusts) represents one seasons worth of growth. The growing ...
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1answer
71 views

How to explain the colour of these scots pines?

I would like to know why the trunks of scots pines have a particular colour, at least in Estonia, as shown here. The bottom part of the trunks is darker than the upper part. What could explain this? ...
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1answer
1k views

Are the arrows in this diagram of ATP synthase correct?

I have a question about this image below. Do you think that the pink arrow is actually going in the right direction? I would suggest a LTO sequence and not LOT, since it is in the T state that ADP + ...
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1answer
5k 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
546 views

Plant cell question in age 12 science test

Can anyone help me answer the questions in the attachment about plant cells. It was a question in my 12 year olds science exam. I'm baffled as I think he has given a good knowledgable answer but it ...
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2answers
778 views

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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145 views

What is the molecule responsible of the yellow color of the Agave americana?

Does anybody know what is the molecule responsible of the yellow color at the edges of this plant? I noticed also that the new forming yellow part at the begging stage is soft green until it is ...