what some limitations found in photosynthesis experiment with the use of dicotyledous leaf ?​

Answers

Answer 1
Answer:

The history of net photosynthesis and transpiration per unit leaf area was determined for intact soybean leaves from their unfolding to senescence during flowering and pod filling on untreated (podded) and partially depodded plants growing in a glasshouse. Leaf diffusive resistances to CO2 were calculated and a water use efficiency parameter was derived (net mass of carbon dioxide fixed per unit mass of water transpired per millibar vapour pressure deficit). Net photosynthesis and transpiration behaved similarly through all stages of leaf development. A number of peaks were evident in these parameters. The first was associated with leaf expansion and occurred when the leaf reached its maximum area. The second peak coincided with flowering of the plant and later peaks occurred during pod filling. Stomatal and mesophyll resistances also exhibited similar behaviour during the life of the leaf; the possible causes of this linkage are discussed. Water use efficiency increased rapidly up to the time of full lamina expansion. Thereafter, it rose slowly or remained stable until leaf senescence approached, when the efficiency declined. Net photosynthesis and transpiration of leaves were very similar in both podded and partially depodded plants. It appears that to prevent a shortage of assimilate during flowering and pod filling, photosynthesis may be maintained or increased in some leaves and the response is not related to the number of pods available for filling. The increases in photosynthesis were correlated with both higher stomatal and mesophyll conductances. Mechanisms by which the plant may control leaf photosynthesis are discussed.

Related Questions

Which best describes ideal growing conditions for fungi?

moist and warm
hot and dry
cool and damp
wet and cold

Answers

Answer:

Moist and Warm because fungi is bomb

Answer:

moist and warm

Explanation:

i has some fungi on trees :3

What happens at the termination site?
DNA thingz

Answers

Answer:

Termination is the ending of transcription,and occurs when RNA polymerase crosses a stop ( termination) sequence in the gene. The mRNA strand is complete,and it detaches from DNA

name the ecological instrument used in measuring aquatic factors​

Answers

Answer:

Several tools aid ecologists in measuring abiotic factors, including thermometers, altimeters, pH meters and many other devices.

The endocrine system regulates the body through hormone release. Like the nervous system, what does the endocrine system help maintain?
A. homeostasis
B. reflexes
C. chemicals
D. neurons

Answers

Answer:

How is the endocrine system related to the nervous system in terms of its regulatory activity?

For one, the endocrine system uses chemical signaling (hormones, produced by glands) while the nervous system uses electrical signaling (neural impulses). The signal transmission of the nervous system is fast because neurons are interconnected, but the functions are more short-lived.

Explanation:

which statement best completes the diagram
A.most people are jewish
B. most people speak greek
C.most people live on farms
D.most people practice islam

Answers

Answer:

A

Explanation:

A. Most people are Jewish

“The rest is lost largely through metabolic processes as heat.”
How can I word that sentence differently?

pls help

Answers

Answer:

The rest is lost generally through metabolic cycles as warmth.

Hope this helps you. Do mark me as brainliest.

Which effect of temperature rise causes a feedback resulting in a rise in global temperatures?

more severe storms

more water vapor in the atmosphere

less water vapor in the atmosphere

less severe storms

Answers

Answer:

Less water vapor in the atemosphere

Explanation:

Answer:

less water vapor in the atmosphere

Explanation:

Can someone pls do this I will give brainliest

Answers

Mitosis definition

a type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus, typical of ordinary tissue growth.

Hope I helped

Why would your heart rate increase or decrease to help maintain homeostasis when you exercise?

Answers

Answer:

The cardiovascular system helps to maintain homeostasis with respect to body temperature. An increased heart rate increases the delivery of blood to your skin. Increased blood flow to your skin and sweating causes dissipation of heat, and body temperature remains within normal limits.

Explanation:

Answer:

well here mate.

Explanation:

the reason i9s while exercising different exercises require different levels of energy therefor why you do push ups your heart rate will beat very fast depending on how long you have been doing them, and when you jog you are at a comfy speed there fore your heart rate stays low and calm.


2. Give a reason why earth worms come out of the soil when it has rained.
for wallowing it?​

Answers

Explanation:

Oxygen diffuses easily through air, and the soil stays aerobic because oxygen comes in from the surface. But after a rain, the soil pores and the worm burrows fill with water. The worms can't get enough oxygen when the soil is flooded, so they come to the surface to breathe.

Why are airports, trains, cruises , and bus stations often considered the highest targets for biological warfare?

Answers

Answer:

a combination of large groups of people, and they are all travelling- which increases the spread.

Answer:

The reason airports, trains, cruises, and bus stations are considered high risk areas for biological warfare is because they all have a high number of people in them which means that there will be more fatalities.

STATION #2
Where is DNA located within the cell?
Your answer here
Nucleus
Mitochondria
cytoplam
Ribosoma
Golgi apparatus

Answers

Answer:

nucleas

Explanation:

i looked it up and we had a unit on this in school ,not that I actually remembered anything they taught me :P

Nuculous
Besides the dna in the nuculous humans and animals also have dna in the cell structures mitochondria

Which phrase best defines evolution by natural selection? pls help​

Answers

Answer:

A process of change in a species over time. Interbreeding among members of a population results in. No change in the relative frequencies of alleles in the gene pool.

Answer:

Process where certain individuals in a population survive because they are better adapted to their environment, so they are more likely to pass on their genes. The mechanism of evolution.

Carrots that have been cut into pieces have a shorter
shelf life than whole carrots. Explain this observation
using factors that affect rate of reaction.

Science 10

Answers

When you cut up the carrot you increase the surface area of the carrot substantially. This increased surface area reacts with the atmosphere and makes the carrot (collectively the pieces) more exposed to bacteria and as a result the cut up carrots will go bad before the carrots as a whole.

I the otter , sea urchin , kelp community , what trophic level is the kelp ?

A. Producer
B. Primary consumers
C. Secondary consumers
D. Tertiary consumers

Answers

Kelp is the producer because it creates its own energy

Which of the following appear to cause movement of the Earth's tectonic
plates?

Answers

Answer:

The force that causes most of the movement is thermal convection, where heat from the Earth's interior causes currents of hot rising magna and cooler sinking magna to flow

Explanation:

During meiosis, a process known as crossing over occurs. Which statement below summarizes the results of crossing over?


O Homologous chromosomes make copies of each other.
Genetic information is removed from both chromosomes.
O DNA winds up into chromosomes and genetic information is deleted.
O DNA is exchanged between homologous chromosomes, resulting in genetic variation.

Answers

Answer:the answers is B

Explanation:

Because reproduction occurs between homologous a chromosome

During meiosis, a process known as crossing over occurs. Genetic information is removed from both chromosomes.

What is meiosis ?

Meiosis is the process  where a single cell divides twice to produce four four haploid daughter cells which are otherwise called as gametes; It can occur in two substages such as meiosis I and meiosis II.

Humans have 46 chromosomes in every cell,  where 23 chromosomes t came from one of our parents and 23 very similar chromosomes that came from the other parents.

Meiosis I consist of substages like Prophase I where nuclear envelope disintegrates, Chromosomes begin to condense, Spindle fibres appear.

Secondly Prometaphase I where Spindle fibres attach to the  centromere followed by Metaphase I where The homologous chromosomes align at the equatorial plate, Anaphase I where he homologous chromosomes move towards the opposite poles.

Telophase I where Spindle fibres disappear, Cytokinesis I where the cytoplasm and the cell division result in 2 non-identical haploid daughter cells.

For more details regarding meiosis, visit

brainly.com/question/11622266

#SPJ6

What Is WEATHERING help ill give you brainlest

Answers

Answer:

weather is the climatic condition s of a place for a short period of time . components of weather are -raunfall,cloudniss etc.

Weathering is the breakdown of rocks at the Earth's surface, by the action of rainwater, extremes of temperature, and biological activity. It does not involve the removal of rock material

Please help, I have no clue

Answers

Answer:

FRESHWATER FISH DUH. LIKE THE PERSON BIHIND ME SAID.

Explanation:

I'm asking this out of personal curiosity, not for school. but it's still for educational purposes kinda, so I hope it's okay.

If a flower is wilted, but not totally dead and withered yet, is the flower dead and it's dead flower body is in the process of decomposing, or is the flower like in the flower stage of being an old person, it lived and now it's old, but not dead yet?

Here's an example of the flower stage I mean. ^-^

Answers

I think it wouldn’t be dead until it looses all of its color and is able to crumple in your fingertips. So basically, it isn’t dead yet when it is wilted. But Its getting to the stage of being dead (like how old people are at that stage of their life where they will pass away soon).

To put it simply, the flower is not dead yet, it’s just “old” :D


A male and a female, both with dimples, have a son without dimples. Which of Mendel's laws does this pattern of inheritance illustrate, and how do you know? AND What is the chance that a daughter of these parents would have dimples? Explain your answer.

Answers

Answer:

Explanation:  Could you have drawn something different in question 3d? Explain. ... yes if both parents are heterozygous. 14 Chance no dimples. 1/4 dd 1/4 no ... If a woman is heterozygous for dimples and has 5 fingers, and a male is ... a Punnett square and calculate genotype and phenotype frequencies to explain your answer.

People also ask

According to the Mendel's Law of Segregation. Since, a male and a female, both with dimples, have a son without dimples which mean both the parents are heterozygous (Aa). since both are Aa × Aa there will be Aa, Aa, AA, aa. in which AA is dominant and aa is recessive thus the chance that a daughter of these parents would have dimple is 3/4.

What is Mendel's law of segregation?

Mendel's Law of Segregation states that a diploid organism passes a randomly selected allele for a trait to its offspring, such that the offspring receives one allele from each parent.

Thus,  the chance that a daughter of these parents would have dimple is 3/4.

To learn more about Mendel's law of segregation click here:

https://brainly.com/question/21489073

Which of these is an OPINION about deforestation (not a fact)? *

A. It can cause animals to lose their habitat.

B. it happens because people use wood and lumber.

C. Deforestation destroys important sources of oxygen.


D. It's a serious crisis that our government should try to stop.
PLEASE ANSWRR

Answers

Answer:

D

Explanation:

Answer:

D

Explanation:

Pretty obvious lol

Choose any adaptation found in the desert (hot or cold). Describe how it helps the organism survive and/or reproduce in that biome. DO NOT CHOOSE A CAMEL HUMP

Answers

Answer:

Cactus spines

Explanation:

The cactus spines keep predators away and prevent different organisms from eating it. This helps it to survive in the desert. Another adaptation is very thick, waxy cuticle help to reduce water loss by evaporation.

ill mark brainliest!

What does a model of the carbon cycle show?

The amount of Earth’s carbon increases.

The amount of Earth’s carbon is constant.

The amount of Earth’s carbon decreases.

The amount of Earth’s carbon cannot be determined.

Answers

The answer is A I believe

Answer:

The amount of Earth’s carbon increases.

Explanation:

Changes that put carbon gases into the atmosphere result in warmer temperatures on Earth. This diagram of the fast carbon cycle shows the movement of carbon between land, atmosphere, and oceans. Yellow numbers are natural fluxes, and red are human contributions in gigatons of carbon per year.

Love the ouma pfp

Identify details in the text that support sustainable
development goals.

Answers

a.25
b.26891
c.5678
hope that helps

2. Which statement is NOT part of the cell theory?
O Cells come from existing cells
O Cells are the basic unit of life
O Cells are all the same on the inside
OLiving organisms are made up of one or more cells​

Answers

Answer:

O Cells are all the same on the inside

SOMEONE HELP MEEE OMG ill mark u brain list or whatever it’s called lol

Answers

A.

1. Land Plant -> Forest Fire -> Atmosphere
2. Land Plant -> Soil -> Atmosphere

B.

1. Atmosphere -> Ocean
2. Atmosphere -> Exposed Rocks -> Ocean

Hope that’s what your looking for :)

Francois Jacob and Jacques Monod studied Escherichia coli (E. coli) bacteria by using lab experimentation. What
revision to their initial hypothesis did they come up with?

Answers

The answer is two operons control bacterial respiration

Answer:

two operons control bacterial respiration

Explanation:

Which of the following is found in plant cells and NOT in animal cells?
Cell membrane
Cell Wall
Cytoplasm
Mitochondria


HELP!!​

Answers

the answer is calculated to "Cell Wall"

Explanation:

I'm pretty sure that it's cell wall!

2. In order to grow, animals with an exoskeleton must
a. Shed their skin
b. shed their shells
C. continue cell reproduction
d. find larger shells to inhabit.

Answers

a.shed their skin..

Explanation:

Exoskeleton

A true exoskeleton, like that found in arthropods, must be shed (moulted) when it is outgrown. ... The new exoskeleton is still capable of growing to some degree, however. Animals of the order arthropoda, like lizards, amphibians, and many other animals that shed their skin, are indeterminate growers

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