How did scientists prove that the food is transported through the phloem

Answers

Answer 1

Answer:

When a aphid is killing at the act of feeding then the body is carefull cut away but the proscis still inserted into the phloem then the food slowly exuded form cut end of the proboscis in the form of drops. These drops contain sugar and amino acids which means food is transported through phloem in plant.


Related Questions

Which type of urinary tract infection is most serious and can be fatal?

Answers

Answer:

b. Kidney infection

Explanation:post protected

it’s a kidney infection

the baglike, muscular organ that mixes and chemically changes protein is the

Answers

The small intestine is what mixes and chemically changes proteins

the adaption, of Xylem cells is formation of a ________________.

I want the answer of this question please as fast as possible

Answers

Answer: The adaption, of Xylem cells is formation of a hollow tube.

Explanation:

1 point
Which of the following would be a good conductor of electricity, heat, and can be drawn into a wire and is malleable?
O Metal
O Nonmetal
O Metalloid
O None of the above
Previous

Answers

Answer:

metal

Explanation:

Answer:

Metal is a good conductor of electricity, heat and drawn into a wirr and is malleable

Compare and contrast between transportation in human ànd plants.
Why transport in human is more effective than that in plants

Answers

Answer:

1)Plants do not have a circulatory system.

•Humans have a well defined circulatory system.

2)transportation in plants occurs through specialised tissue xylem and phloem.

•Transportation in humans occurs through a netwotk of blood vessels such as artery vein capillary.

3)In plants substances transported are water, minerals, sugars and amino acid.

•In humans substances transported are glucose, glycerol, minerals, vitamins, fatty acids, amino acids and hormones.

4)Transportation in plants in controlled by opening and closing of stomata.

•Transportation in humans is controlled by constriction or dilation of blood bessels.

-->■Transportation in humans is more effective than the plants because in humans there is a well defined circulatory system which is highly regulated.As transport occur through blood vessel , transportation can be regulated by dilation or constriction of blood vessel.But plant do not have such circulatory system.

BRAINLIST PLS

What is global warming?:​

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[tex] \bigstar \underline{ \large{ \sf{ \pink{Global \: \: Warming}}}} : [/tex]

▶ Global warming can cause sea levels to rise dramatically. In many places, coastal areas have already been flooded. Global warming could result in wide ranging effects on rainfall patterns, agriculture, forests, plants and animals. Majority of people living in regions which are threatened by global warming are in Asia. A recent climate change report gives us only a limited time to keep the greenhouse gases at the present level. Otherwise, the temperature may rise by more than 2 degrees Celsius by the end of the century, a level considered dangerous.

______________________________

what part of the autonomic nervous system is represented in the given image?

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There is no image attached to this question

If a deletion occurs in a gene that encodes DNA polymerase I and no functional DNA polymerase I is produced, what will be the MOST likely consequence of this mutation

Answers

5’—>3’ DNA polymerase
3’—>5’ exonuclease : DNA repair
5‘—>3’ exonuclease : primer removing
All of the functions mentioned above may disable.

What is an ecological pyramid with explanation

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Answer:

Explanation of Ecological pyramid :-

A graphical representation in the shape of a pyramid to show the feeding relationship of groups of organisms, and the flow of energy or biomass through the different trophic levels in a given ecosystem.

Examples of Ecological pyramid :-

The productivity pyramid is also called the energy pyramid. Sun is the primary source of energy. Fungi and bacteria are decomposers which can procure nutrient from any trophic level by breaking down dead and decaying organisms. These nutrients return to the soil and ate taken up by plants.3 Major Types of Ecological Pyramids :-

| Pyramid of Number, Biomass and EnergyPyramid of Number: It depicts the number of individual organisms at different trophic levels of food chain. Pyramid of Biomass .Pyramid of Energy.

Explanation:

Hope this helps you XD ✌️Carry on learning !!

During incubation, antimicrobials applied to the bacterial lawn become increasingly _________ as they diffuse out of the disk into the medium.

Answers

Answer:

Meee-boop

Explanation:

Ped0

please help I'm stuck!!!​

Answers

Answer:

b is the answer predator

how much milk does the average cow produce each day

Answers

Answer:

6-7 gal

Explanation:

STATISTICS B)

Although a liver cell and a muscle cell in a human cell develope from the same single cell, their appearance and function is different. This is because their liver cell is?

Answers

Answer:

liver cells:

contain different genes than the muscle celldestroyes the muscle cell genes it contains lacks the genes found in muscle cells

Look at the image above. What type of cells are these?

A. Prokaryotic
B. Eukaryotic
C. Both

Answers

Answer:

The is B eukaryotic because it have nucleus and other organelles like mitochondria and others

The answer should be B.

What did Allan Savory notice about the lands grazed by wild animals at the Africa Centre for Holistic Management

Answers

Answer:

Allan Savory noticed that grasslands co-evolved with large numbers of migrating ruminants, and therefore are co-dependent on each other's survival. These animals grouped together and constantly bunched due to the predator-prey connection, eat the grasses following the seasons throughout their migration in arid regions (Brittleness scale, of Non-Brittle to Brittle environments).

As they move, they drop nutrient-rich dung and urine, while trampling organic litter (live or dead grasses, leaves, etc) and seeds into the soil. These actions break down materials into the surface, providing more covered soil and keeping materials from chemically decomposing (oxidation, as opposed to the fast biological decomposition that occurs in areas with consistent rainfall(Non-Brittle)). The true testament to his insights of Holistic Management re: grasslands is known as the 4th Key Insight: That time, rather than numbers governs over-grazing or over-trampling.

The important component here is that the time exposed to these animals plays the significant role in whether you have healthy grasslands, not the number of animals exposed to the area of consideration. The amount of "rest" (time) for grasses between eating or trampling is just as crucial as the time in an exposure.

Explanation:

Explained in his book and courses under "Holistic Management", by Allan Savory and Jody Butterfield, and Sam Bingham

According to the punnet square, what is the ratio of the offspring genotypes?

A. 1:2:1
B. 3:2:1
C. 4:3:2

Answers

the answer us B. 3:2:1

Which organism carries out autotrophic nutrition

Answers

Answer:

Autotrophs is the answer

Example : plants

Plants and some bacteria (e.g., cyanobacteria) carry out autotrophic nutrition, synthesizing their own organic molecules using light or inorganic substances.

Organisms that carry out autotrophic nutrition are capable of producing their own organic compounds and energy sources using inorganic substances. One example of an organism that performs autotrophic nutrition is plants. Plants possess specialized structures called chloroplasts that contain chlorophyll, a pigment responsible for capturing sunlight energy.

Through the process of photosynthesis, plants convert carbon dioxide and water into glucose, a form of stored energy. This energy is then used by the plant for growth, development, and other metabolic processes. Additionally, some bacteria and protists are also capable of autotrophic nutrition. These organisms utilize different mechanisms such as chemosynthesis or photosynthesis to synthesize their own organic compounds and derive energy from non-organic sources, such as inorganic chemicals or light, respectively.

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H-E-L-P! ASAP! Describe two ways that plants respond to their environment, giving an example of each. Your answer can include ways that plants respond to seasonal changes, light, gravity, or touch.

Answers

Plants have evolved to respond to critical changes in the environment by either growing their roots, or leaves towards/away from any stimulus. This response, is called a tropism.

For example, The plant's stem and leaves bend toward sunlight. Their roots grow toward Earth's gravity.

Plants have complicated systems to detect and then respond to changes in light, gravity, temperature, and or even physical touch.

I hope this helps!

The __________ __________ of the midbrain receive auditory input and trigger the head-turning auditory reflex.

Answers

Answer:inferior colliculi

Explanation:

. Differentiate between analgesic and antibiotic. ann addictive​

Answers

Answer:

Analgesic - pain reliever, analgesic - a drug designed to relieve pain - analgesia.

Antibiotics - Antibacterial drugs that are widely used as medications to treat infections.

Explanation:

This termines are different at all. The only same thing is that they are both drugs

Diploid means having Multiple Choice one homologous set of chromosomes. two chromosomes in each somatic cell. two chromosomes in each gamete. three homologous sets of chromosomes. two homologous sets of chromosomes.

Answers

Answer:

A diploid cell have two complete set of chromosomes except the sex cell which is haploid

Explanation:

the somatic are diploid gotten from each perent but in the sex cell it is haploid

The formation of clouds is caused by which of the following?
O condensation
O evaporation
O infiltration
O precipitation

Answers

Answer:

condensation

Explanation:

once evaporation occurs the water vapor rises and condenses into clouds when it hits the colder air higher in the atmosphere.

Answer: Condensation

Condensation is the change of the state of matter from the gas phase into the liquid phase, and is the reverse of vaporization. This word mostly refers to the water cycle.

why are antibiotics not effective against viruses?

Answers

Answer:

Viruses are different to bacteria; they have a different structure and a different way of surviving. Viruses don't have cell walls that can be attacked by antibiotics; instead they are surrounded by a protective protein coat. Antibiotics do not work on viruses, such as those that cause colds, flu, bronchitis, or runny noses, even if the mucus is thick, yellow, or green. Antibiotics are only needed for treating certain infections caused by bacteria, but even some bacterial infections get better without antibiotics.

Asexual reproduction __________. View Available Hint(s)for Part A produces offspring genetically identical to the parent requires both meiosis and mitosis leads to a loss of genetic material is limited to plants is limited to single-cell organisms

Answers

Answer:

produces offspring genetically identical to the parent

Explanation:

Drug Y inhibits the activity of parasympathetic information. Which cranial nerve would possibly be affected

Answers

The cranial nerve III, VII, IX, and X regulate the activity of parasympathetic information.

what’s the acceleration of an object with 1 kg and 1 N?

Answers

Answer:

What is the acceleration on an object with a mass of 1 kg if a force of 1 Newton is acting on it? 1 Newton = 1 kg • m/s2 One Newton is defined as the amount of force required to give a 1-kg mass an acceleration of 1 m/s/s.17

Which of the following muscles does NOT flex the wrist?

Answers

Answer:

b. Extensor digitorum

Explanation: is correct

Should be Extensor digitorum

the process that continually adds new material to the ocean floor

Answers

Answer:

Sea-floor spreading i think not a 100 percent.

Explanation:

In sexual reproduction, will an offspring show a recessive trait if just one of its parents has recessive alleles for that trait? Explain your answer.

Answers

Answer:

No, they will not

Explanation:

In this question, we assume that the parents have genotypes of rr and RR (I use "r" out of convenience). If we cross both of these parents, it is impossible for any of the offspring to be rr like the one parent. They would all be heterozygous. If the other parent had a single recessive allele, then it would be possible.  

Hope this helps!

illustrate how the self sealing bubble membrane helps to illustrate the passage of molecules through a cell membrane and the property of selective permeability

Answers

Self-sealing bubble membranes help to illustrate the passage of molecules and the property of selective permeability in that they are an example of how something can be semi-permeable and allow only some substances to pass.

When we mention a membrane, we refer to the selective barrier that protects cells from the environment. Within this barrier, lie certain proteins that serve as a kind of "tunnel" for the passage of very specific substances. This, along with a few other mechanisms are what gives a membrane the title of being semi-permeable.

This is because semi or selective permeability is the ability to allow the passage of very specific substances despite being a sealed barrier. Self-sealing bubble membranes share this ability by allowing some substances, like specific gases, to enter the bubble while others will remain on the exterior of the sealed barrier.

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