The answer is that the criteria of classification change with the improved understanding of organisms around us. During the time of Aristotle, not much was known about the living organisms. So, he classified them as he observed. Plants were classified into herbs, shrubs and trees; very much like what’s taught to a second grade student. Animals as Enaima and Anaima based on the presence or absence of RBCs. After him, Carolus Linnaeus tried his hand over classification. He came up with the 2 kingdom classification: Plants and Animals. He considered only a set of morphological and physiological criteria to decide the kingdom to which an organism belongs. It includes presence of cell wall, mode of nutrition, contractile vacuole, locomotion and others. Based on these criteria, he included widely differing organisms into a single kingdom, for example, fungi, bacteria, algae, and higher plants were included into plant kingdom just because they have cell wall as a common aspect. Then came, Ernst Haeckel, who came with a third kingdom of Protista to include unicellular organisms. Copeland gave a 4 kingdom classification segregating unicellular organisms into 2 separate kingdoms based on their nuclear structure. R.H. Whittaker came next introducing the most accepted 5 kingdom classification system. You should understand one thing that man’s knowledge of classifying organisms improved with the improving technologies available to him, which he exploited to very effective extent. Carl Woese gave the 6 kingdom classification and 3 domain system based on the 16S rRNA sequence.
Our understanding of organisms around us is improving day by day and the system of classification will also change further in pace with the improvement in technology.
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Modern classification systems have evolved from Linnaeus' original taxonomy to include genetic and biochemical criteria, introducing new categories and a three-domain system. These revisions allow for a more accurate representation of evolutionary relationships among organisms.
Differences Between Modern and Linnaean Classification Systems
The modern classification system has evolved significantly from the taxonomy first developed by Carl Linnaeus in the 1700s. The Linnaean system grouped organisms based on morphological traits such as the number of legs or shape of leaves. However, with the discovery of many new species and advances in our understanding of evolutionary relationships and genetics, modifications were necessary. Modern classification not only includes physical characteristics but also considers biochemical and genetic similarities and differences, leading to a more detailed and evolutionary-based taxonomy.
Linnaeus' work was foundational to modern biology, introducing the system of binomial nomenclature which gives each species a two-part name signifying the genus and species. Yet, it was limited by the knowledge of his time and therefore did not account for all the complexities discovered since. With the incorporation of molecular biology, new categories such as the subphylum, superfamily, and domain were added to better reflect the relationships among life forms. Furthermore, the modern system includes a three-domain system which classifies life into Bacteria, Archaea, and Eukaryota as opposed to Linnaeus' simpler kingdoms.
The changes to Linnaean taxonomy ultimately allow for a classification system that is adaptable and potentially more accurate, accommodating new scientific discoveries and perspectives on the nature of life.
Populations of blue-winged warblers, a type of bird, migrate south in the winter and return to Canadian breeding grounds in the spring. As global temperatures have increased due to climate change, spring has started arriving in the warbler's breeding grounds earlier in the year, before the warblers return. Warblers now arrive at their breeding grounds too late to select ideal nesting sites and to feed on important early-spring food sources. How are populations of blue-winged warblers most likely to be affected by the earlier arrival of spring?
For the most part the birds will be negatively affected by the early spring, they won't have the food they need and because they missed finding ideal nesting spot one of two things will happen, they will either pick an unsafe nesting area which can result in their young being hurt or even themselves, and/or they won't breed at all and because of this the Warbler population will decrease due to low mating rates. Eventually, the birds will evolve in a way and start coming back from their migration earlier than previous generations and thus they will have access to the food and nesting areas that they need and the population will spike again.
I hope this helps you out a little!
Answer:
Populations will decline since individuals will be less likely to successfully reproduce. Hope this helped
Explanation:
What does this extreme drop between November and December most likely represent?
Answer:A reflection of the migratory nature of the birds at the lake
Explanation:
I just got it right
Does the grasshopper or caterpillar undergo incomplete metamorphosis
The phenomenon called incomplete metamorphosis is seen in grasshopper.
Explanation:The total number of the stages act as major difference between incomplete and complete metamorphosis. The former has 3 stages namely egg, nymph and adult, whereas the latter has 4 stages namely egg, larva, pupa and adult.
The process of incomplete metamorphosis is seen in insects such as grasshopper, termites, true bugs, praying mantis etc. The caterpillar shows complete metamorphosis at the end of which adult butterfly emerges out.
In incomplete metamorphosis, initially, the insect comes out of egg. Then it grows and becomes nymph which is a smaller version of adult insect, its physical appearance is very vulnerable due to its young age. Then it grows into a adult insects and lives till its end.
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Scientists use potassium-argon method to determine the age of a rock sample. Three separate tests showed the rock to be 1.3 billion years old. However, scientists know the rock must be at least 2.5 billion years old based on the rocks around it. How is this possible?
The radiometric dating was off due to loss of daughter isotopes.
The relative dating was off due to the loss of daughter isotopes.
The relative dating was done incorrectly.
The radiometric dating was done incorrectly.
Answer:
Option C, The relative dating was done incorrectly.
Explanation:
As it is mentioned here in the description that scientist know that the actual age of rocks must be 2.5 billion years and this age of the rock must have been derived through some methodology of radioactive dating. Now since the potassium-argon method was used three times and it depicted the same result every time stating that the age of rocks is 1.3 billion years. Therefore there are high chances that earlier method used that estimated the age of rock as 2.5 billion years must be wrong.
What type of storm is shown in the graph
Which statement best explains why cellular respiration in plants and other organisms is dependent on photosynthesis
Cellular respiration depends on two chemical reactants; glucose and oxygen. Glucose and oxygen are made available to plants and animals for cellular respiration thanks to photosynthesis. Photosynthesis is the chemical reaction that uses solar energy to convert water and carbon dioxide into glucose and oxygen. Without photosynthesis, the available glucose and oxygen on the planet would quickly deplete to the point that life could not be sustained on Earth.
Photosynthesis produces glucose and oxygen, which are required for cellular respiration. Therefore, without photosynthesis, cellular respiration in plants and other organisms could not occur.
Explanation:The dependency of cellular respiration on photosynthesis in plants and other organisms is explained by the fact that photosynthesis produces the essential materials required for cellular respiration. Specifically, photosynthesis produces glucose and oxygen, which all organisms use to perform cellular respiration. Photosynthesis forms an energy link with cellular respiration.
In the process of photosynthesis, plants convert light energy into chemical energy, creating glucose and releasing oxygen into the atmosphere. This glucose and oxygen then become the fuel for cellular respiration, a process where energy is released from glucose and used to create ATP, a molecule that powers cellular activities.
Therefore, without the glucose and oxygen produced by photosynthesis, cellular respiration could not occur. This signifies the intricate relationship and dependency between photosynthesis and cellular respiration, highlighting the vital role they play in maintaining life on Earth.
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The oldest rocks found on Earth are 3.96 billion years old. However, scientists believe the Earth is about 4.6 billion years old. What evidence supports this idea? Choose all that apply.
The Earth is 4,54 billion years old. This age has been determined with the radioactive dating technique. The precise decay rate of radioactive elements is used as a clock: the number of daughter products in one rock indicates its age.
The oldest meteorites ever dated in the Solar System are 4,56 billion years old, the oldest minerals on Earth are 4,4 billion years old, and the oldest rocks on Earth are 4 billion years old. These ages are very consistent because the meteorites had to form before the accretion of our planet, and the Earth had to cool down before the first minerals could crystallise.
The Solar System was formed around 4.6 billion years ago, out of the collapse of a dense cloud composed of dusts and gases. Meteorites, which are the very components of our planets (through the process of accretion), are the remnants of the Solar System’s origins. Dating meteorites thus allows us to give a lower age to the Solar System (4,56 billion years old).
the energy role of a grizzly bear is that of a(n) ________ because it cannot make it's own food
The energy role of a grizzly bear is that of a consumer because it cannot make its own food.
Grizzly bears are considered heterotrophs as they derive their energy from consuming other organisms, both plants and animals. They depend on the environment for food, and not on photosynthesis. A distinct energy-related physiological process observed in grizzlies is hibernation during which they depend on stored fat for energy.
Explanation:The energy role of a grizzly bear is that of a heterotroph because it cannot make its own food. In biology, animals that cannot produce their own food are termed as heterotrophs. They derive their energy from external food sources. Grizzly bears, as an example, are omnivores and consume both plants and animals for sustenance. Thus, they depend on the environment to provide them with nourishment rather than photosynthesizing, similar to plants or certain microbial organisms.
Another important life cycle aspect of grizzly bears related to their energy consumption is hibernation. Before winters, they enter a phase of hibernation during which they rely on their stored fat reserves for energy. This process is not just random; there are certain environmental cues that trigger this physiological change in grizzly bears. Hibernation allows them to survive through winters when food resources are scarce.
Bears that encounter humans for food sources are more inclined to intrude human habitations, indicating an adaptive behavior in search of energy (food) sources.
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What does this symbol represent
It represents a cold front
Why is it important that cells formed by mitosis have the same number of chromosomes as the parent cell?
Mitosis refers to a procedure of producing more cells, which are genetically similar to the parent cell. It plays an essential role in the development of embryos, and it is essential for the development and growth of the bodies as well. Mitosis generates novel cells and substitutes the cells, which are lost, old or destructed.
In mitosis, a cell differentiates to produce two similar daughter cells. It is essential that the daughter cells exhibit a copy of each chromosome, so the procedure includes copying the chromosomes initially and then carefully distinguishing the copies to provide each new cell a complete set.
How is pollen transferred from the male reproductive structure to the female in gymnosperms and angiosperms
Gymnosperms produce male and female cones while angiosperms produce stamens and pistil in the same flower as the male and female reproductive parts. ... In angiosperms, pollen grain is transferred from the anther to the pistil by wind, insects oranimals by the attraction to flowers.
The process of transfer of pollen grains from the male reproductive structure to the female in gymnosperms and angiosperms is known as pollination. Pollination occurs through different agents.
What is pollination?
Pollination is the process which includes the transfer of pollen grains (male gametophyte) from the male reproductive structure (anther) to the female reproductive structure (stigma). This is an important step of reproduction in plants.
Gymnosperms produce male and female cones while angiosperms are the plants which produce stamens and pistil in the same flower as the male and female reproductive structures. In angiosperms, the pollen grain is transferred from the anther (male gametophyte) to the pistil (female gametophyte) through the help of different agents called pollinators such as wind, insects or animals by attraction to the flowers.
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What is true about a meal of a piece of salmon with garlic butter? high in fiber, low in protein. No vitamin B12, no iron, low in carbohydrates
its low in carbohydrates :)
Answer: It is low on carbohydrates (C)
Explanation:
what patterns do you notice? describe three patterns
was there something attached to this- if not here are 3 patters
2,2,2,1,1,2,2,2,1,1
it starts with repeating the number 2 three times and then repeating the number 1 twice and repeats.
T,T,A,A
2 T and 2 A repeating
TRIANGLE, SQUARE, RECTANGLE TRIANGLE, SQUARE, RECTANGLE
it repeats the same pattern
Which terrestrial biome has abundant rainfall?
Rainfall in 1.)_____ is abundant, with 2,000 to 2.) ______ millimeters of rain each year.
1.) A.)coniferous forests
B.) rainforests
C.)temperate deciduous forests
2.) A.)10,000
B.)5,000
C.)3,000
The answer for 1) would be B) Rainforests and 2) would be A) 10,000.
Answer:
1(b) 2(c)
Explanation:
Sean, a graduate student, is attempting to repeat a published experiment. He does not find the same results that the authors found. This could be the result of Sean's A) peer review B) scientific error C) scientific misconduct D) professional practice
Answer:
Your correct answer is B) not A)
Explanation:
Here's why:
Sean, a graduate student, is attempting to repeat a published experiment. He does not find the same results that the authors found. This could be the result of Sean's scientific error.
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what are biotic and abiotic factors of cellular respiration
Abiotic- this refers to non living physical and chemical elements in the ecosystem( soil, water, sunlight, air, and minerals).
Biotic- this refers to living or once-living organisms in the ecosystem.
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Question:Which image shows the formation of sleet? I will be putting the answer choices up above as a picture.
Sleet formation involves raindrops falling through a cold layer of air near the ground, turning into ice pellets before reaching the surface. The correct image would show this process sequentially from above the ground to contact with the ground.
Explanation:Without the provided images, it's important to understand what the process of sleet formation entails. Sleet refers to a form of precipitation that occurs when raindrops fall through a layer of freezing air near the ground, turning them into small ice pellets before they reach the surface. The image that correctly depicts the formation of sleet would typically show a sequence where the raindrop freezing process begins above the ground and completes before the drops hit the ground. Various stages of the freezing process should be clearly illustrated.
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what factor affects the amount of air resistance experienced by an object?
A)time in contact with the air.
B) weight of the object.
C)distance traveled by the object.
D)surface area of the object.
Which factor most strongly influences the kinds of plants that can grow in an area?
The climate of the area - APEX
Answer:
the areas climate
Explanation:
The process that produces a similar appearance among unrelated groups of organisms is A. coevolution. B. mass extinction. C. punctuated evolution. D. convergent evolution.
Answer:
C. Convergent evolution.
Explanation:
Convergent evolution is the independent evolution of similar features in species of different periods or epochs in time. Convergent evolution creates analogous structures that have similar form or function but were not present in the last common ancestor of those groups.
From the earths atmosphere carbon dioxide is used by plants,algae, and Cyanobacteria during the process of?
Photosynthesis takes in the carbon dioxide produced by all breathing organisms and reintroduces oxygen into the atmosphere. Photosynthesis is the process used by plants, algae and certain bacteria to harness energy from sunlight and turn it into chemical energy
in experiment 3, what was the appearance of the elodea cells in aquarium water a:The chloroplasts were located mostly from the center of the cell b:The chloroplasts were located mostly at the periphery of the cell c:The cell membrane was pressed against the cell wall d: The cell membrane shriveled and pulled away from the cell wall
your answer is C- he cell membrane was pressed against the cell wall
Answer:
The correct answer will be option-B.
Explanation:
Elodea is the aquatic plant which contains all the organelles like a nucleus and cell wall which gives the box-like appearance to the cells. The elodea cells lack a central nucleus.
In the given question, the chloroplast organelle associated with the photosynthesis in plants is observed at the periphery in every plant cell. Few chloroplast cells are distributed in the center.
Thus, Option-B is the correct answer.
Why do birds have enough energy to fly
They have enough energy to fly because, Birds have a very strong heart and an efficient way of breathing. And, these are necessary for birds to fly. Birds also use a lot of energy while flying and need to eat a lot of food to power their flight.
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The equation shows cellular respiration during cellular respiration glue close combined with oxygen to form carbon dioxide water in ATP what happens to the energy and bonds and glue close
C6H1206 + 602 + 6H20 +ATP
Answer:
During the process of cellular respiration,that comprises three further processes (glycolysis, Kreb cycle and electron transport chain) the energy present in glucose molecules is transformed into ATP.
Explanation;
Cellular respiration is a process in which sugar breaks down to produce H2O and carbon di oxide, and during the same process energy in the form of ATP packets is formed that can be later on used by an organism to perform day to day activities.
Cellular respiration is the process during which energy present in the bonds of glucose are transformed into the form of ATP. ATP is the molecule that stores energy in its phosphate (PO4) bonds.
Hydrolysis of one phosphate bond of ATP releases almost 7.3 kJ of energy. Similarly, the hydrolysis of second phosphate bond of Adenosine mono phosphate releases around 3.4 to 3.6 kJ of energy. Therefore, the total amount of energy released from ATP hydrolyses is around 18 to 18.2 kJ of energy!
This energy is all that living organisms need to fulfill their cellular and physical work requirements.
Hope it help!
Answer:
Cellular respiration refers to the set of metabolic reactions taking place in a cell in order to harness energy from the food (glucose) and convert it to more usable form which is ATP (adenosine triphosphate).
The bonds of glucose and oxygen are broken, added, and are rearranged to form carbon dioxide, water and ATP.
The glucose is oxidized through various steps such as glycolysis, pyruvate decarboxylation, and Krebs cycle.
All the NADH₂ and FADH₂ formed by the above reactions undergo electron transport chain which causes oxidative phosphorylation of ADP to form ATP.
The summary of cellular respiration is shown in the form of the chart below.
identify the main term for removal of gallbladder calculi by means of an open procedure
Laparoscopic Cholecystectomy
Gallbladder is known to be pear shaped organ that is found beneath the right side of the liver. It functions by collecting and concentrating the bile (digestive liquid ) produced by the liver. However, Laparoscopic Cholecystectomy (Laparoscopic Gallbladder Removal ) is known to be a surgical procedure performed for the removal of gallbladder which involves the use of small incision instead of large one.
The main term for the removal of gallbladder calculi by means of an open procedure is cholecystectomy.
Explanation:The main term for the removal of gallbladder calculi by means of an open procedure is cholecystectomy. This surgical procedure involves the complete removal of the gallbladder to treat conditions such as gallstones. This may be done due to gallstones, inflammation, or other gallbladder-related issues. Often performed laparoscopically, the surgeon makes small incisions and uses a camera for visualization.
Cholecystectomy is a common and generally safe procedure, and the body can adapt to the absence of the gallbladder. While patients may experience changes in digestion, the procedure aims to alleviate symptoms and prevent complications associated with gallbladder disorders.
Penicillin is an antibiotic that was discovered in 1928. Today many species of bacteria have acquired resistance to penicillin. This adaptation occurred as a result of
Answer:
THE ANSWER IS C ( genetic mutation) ON USATestPrep because...
Explanation:
Many bacteria have acquired the ability to produce an enzyme called penicillinase, which destroys penicillin. All enzymes are proteins. The ability to produce the new protein penicillinase came from a change in the bacterial DNA: a genetic mutation.
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The diagram shows a process used to produce apple trees with the desired trait of sweeter fruits.
Which labels should be used to complete the diagram?
A X: Enzymes
Y: Apple tree DNA
B X: Enzymes
Y: Gene for sweeter fruit
C. X: Apple tree DNA
Y: Gene for sweeter fruit
D. X: Gene for sweeter fruit
Y: Apple tree DNA
Answer:
gene for sweeter fruit
The answer is option B:
X: Enzymes
Y: Gene for sweeter fruit
The labels that should be used to complete the diagram are 'X: Enzymes' and 'Y: Gene for sweeter fruit'. Enzymes are involved in modifying the apple tree DNA, and the gene denoted as Y is responsible for the desired trait of sweeter fruit.
The labels that should be used to complete the diagram are:
X: Enzymes
Y: Gene for sweeter fruit
This represents the process of genetic modification, where enzymes are used to insert a specific gene (for sweeter fruit) into the DNA of an apple tree.
Enzymes are biological molecules that catalyze chemical reactions, and in this process, enzymes are involved in modifying the apple tree DNA to produce sweeter fruits. The specific gene responsible for the desired trait of sweeter fruit is denoted as Y.
Why are marshes more productive than bogs
The acidity of the soil-peat inhabits diversity of plant species compared to marshes.
An important distinction to bogs would be that marsh soils are more typically neutral in the pH scale, to slightly more basic.
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Answer:
The high nutrient enriched soil, long growing period and sufficient sunlight exposure are major factors which makes the marshes more productive than the bogs.
Explanation:
Marshes are one of the highly productive ecosystems just like the swamps. This is because of the following reasons –
a) High nutrient depositions due to the flow of nutrient enriched sediments of river though the marsh area
b) They have long growing period
c) Sufficient amount of sunlight exposure.
While bogs remain water choked most of time in a year and thus decaying plants and leaves form an important part of its soil. Such soils have low oxygen and nutrient content.
If a population grows larger than its environmental carrying capacity, then
A) death rate may rise.
B) immigration rate may increase.
C) birth rate may rise significantly.
D) death rate may fall significantly.
A- the Death rate may rise because there might not be enough resources for everyone to live off of.
Answer:
i think the a might be the answer
Explanation:
1. hormone secretion
2. metamorphosis
3. fertilization
4. cell division
some one celled organisms reproduces by binary fission which is a process of cell division. The answer is 4.