A dichotomous key is a classification tool based on morphological or behavioral characteristics. It provides two options per feature.
What is a dichotomous key?A dichotomous key is a significantly useful tool to classify organisms.
If you have an organism -or part of it- and you need to taxonomically identify it, you use a dichotomous key.
The key provides an easy and fast way for identification by describing different morphological or behavioral traits, leading you to the correct taxonomic classification.
The term dichotomous refers to how information is provided.
You will always have two options per feature (a and b, or 1 and 2), and you will have to choose one of them according to the characteristics of your organism.
Once you choose one of the options according to your organism, the key leads you to the following description, and you will have to choose one of the options again.
You will repeat this until you reach the name of your organism.
The key describes only specific traits that are useful for differentiation.
Now, let us write two steps of a dichotomous key that would be helpful for the bird-watcher.
Description 1a ----------- The organism is a vertebrate ----------- Go to 2
Description 1b------------ The organism is invertebrate ----------- Go to 5
Description 2a ---------- The organism flies ----- Go to 3
Description 2b ---------- The organism does not fly ---------- Go to 4
Description 3a ------ The organism is yellow and sings ---- This is your bird
Description 3b ----- The organism is grey and does not sing --- This is another bird
So in this example, the key asks you if the animal you are looking at is a vertebrate or not. It is a vertebrate, so you choose option 1a and move to description 2.
In description 2 the key asks you if your animal flies or not. It is a bird and is on a tree, so does it fly. You choose option 2a and move to description 3.
Finally, the key asks you if your bird is yellow and sings or if it is grey and does not sing. You choose option 3a and the key tells you the name of your bird.
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What is one thing the government. Businesses and or India can do to get people to improve/increase carbon sinks
Answer:
The Government is currently working on a project, where their plan is to reduce carbon emissions by 45% by the year 2030.
what ar the negative impact of overpopulation on forest
Answer:
If it has a rain if no tree it is going to be flood on the forest
Explanation:
That's my opinion..
Answer:
deforestation
difficulty for animals and bids to live
Explanation:
these are the effects
Is this correct?
LOOK AT IMAGES!!!
Answer:
i think the second question is the answer in the middle, im not sure about the first one.
Explanation:
Hi!~
Answer:
Option one is: Incorrect, the best option is A)
Option two is Incorrect, the answer is B) Kittens are not exposed to humans and new situations early on.
Explanation:
Option 1: Option A makes the most sense, but I might be wrong! :(
Option 2: If a kitten is born in the streets, the kitten grows up not knowing people, so those cats are afraid of people. The option you chose is saying that if you raise your cat then put it outside, the cat becomes feral- This is incorrect, because the cat grew up with humans.
I hope this helps!~ <3
what type of molecules are the potassium and sodium in the axon?
a. dendrites
b. ions
c. neurons
Answer:
b, ions
Explanation:
Poteassium and sodium in their ion molecular form in the axon of a neuron as they are are used in proton pumps to aid in the movement of neurons.
Ions molecules are the potassium and sodium in the axon. The correct option is B.
Thus, Ions such as potassium and sodium can be present in the axon. Ions, which are electrically charged particles, are important for the movement of electrical messages (action potentials) up a neuron's axon.
For the creation and transmission of nerve impulses, these ions must flow via specific channels and across the axon membrane.
Potassium and sodium are ions. The electrical impulses (action potentials) that are transmitted along the axon of a neuron are fundamentally carried by ions, which are electrically charged particles.
Thus, Ions molecules are the potassium and sodium in the axon. The correct option is B.
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A scientist is studying soil and has determined that it is composed of 5 things. She has determined 4 of them: Living organisms, rock fragments, water, and air. What piece is
she missing?
A. Lime
B. Mineral castings
C. Mantle
D. Dead organic material
Answer:
D. Dead organic material
Explanation:
D should be right because you find alot of things decaying in soil, its the main reason we can recycle nutrients and things are able to grow in soil.
What type of circulatory system pumps hemolymph that bathes the organs and tissues with a simple heart through a few open blood vessels (the heart does NOT form a closed circuit with the blood vessels)?
Group of answer choices
A. A primitive circulatory system
B. A closed circulatory system
C. An open circulatory system
D. A simple circulatory system
Answer: C. An open circulatory system
Explanation:
An open circulatory system is found in animals such as insects and crustaceans. It pumps hemolymph that washes over organs.
Scientists often classify organisms into two
categories, known as generalists or specialists. or The generalists have wider
range of habitats in which they can survive. They have a broader niche in their community.
Specialists have a much
narrower range and cannot tolerate changing conditions as well. They have very specific plants or animals that make up or
theit diet. Understanding whether an
habitats in which it is found.
organism is a generalist or a specialist can help protect the organism or the
Based on
Es
the passage, what would make a scientist classify an invasive plant species as
generalist rather than a specialist?
A)
The scientist has infers that all generalists are plants and all
specialists are animals.
B)
The scientist has observed that the
invasive plant can survive in a
wide range of conditions, making it successful in many habitats.
C
The scientist has observed that the
invasive plant is consumed by a
wide range of herbivores, making it a food source for many species.
D)
The scientist has observed that the invasive plant produces larger
flowers than other plants in the area, making it successful at
reproduction.
Answer:
b
Explanation:
this is because Invasive species are frequently generalists in terms of food, or habitat needs, have fewer predators in their introduced environments and are better able to exploit disturbances than their native competitors.
In what way is the genetic code in all organizms the same?
Answer: All known living organisms use the same genetic code.
Explanation: The genetic code is unambiguous. Each codon codes for just one amino acid (or start or stop). Credit libretexts.org.
how can the process melting and cooling of magma affect the rock cycle
Answer:
Lava eruptions can be “fire fountains” of liquid rock or thick, slow-moving rivers of molten material. Lava cools to form volcanic rock as well as volcanic glass. Magma can also extrude into Earth's atmosphere as part of a violent volcanic explosion. This magma solidifies in the air to form volcanic rock called tephra.
what is an adaption in biology
An adaptation is when an organism becomes better suited with an environment. An example of this is how giraffes evolved with long necks so they could reach leaves off of taller trees.
Which sport is required to have both male and female competitors ?
A. Hockey
B. Water polo
C. Mixed doubles tennis
D. Swimming
Answer: Equestrian: An Olympic sport in which competitors ride horses, male and female riders compete head top head against each other in eventing, dressage and show jumping disciplines.
Describe how a rainbow would look if viewed through a blue filter. Explain why the rainbow would appear this way
help please!
answer: all the colours except from blue would appear black as the wavelengths that correspond to these colours have been absorbed by the filter. The blue part of the rainbow would appear blue as the blue light is reflected back into your eyes and not absorbed by the filter.
In what way is the genetic code in all organisms the same?
Answer:
All organisms have the same nucleotides
Explanation:
All organisms have DNA. DNA is made up of the nucleotides Guanine, Adenine, Thymine, and Cytosine, with Guanine pairing with Adenine, and Thymine pairing with Cytosine. The combinations of pairs in a sequence determine an organism's individual genes.
hello. what dies but is a immortal.
senescence, such as through injury, poison, disease,..
what percentage of the daughters will have brown spotted teeth when a man with spotted teeth marries a women with white pearly teeth
Answer:
I'm just trying to get points
Explanation:
1237980
Please help! Will give brainliest if it’s the correct answer
Which of the following statements are true for coal? (select all that apply)
it is the most abundant fossil fuel
it is renewable
it is the cheapest fossil fuel
it takes a lot of processing to turn into its usable form
Answer:
all of them apply except coal is non_renewable
Answer:
It is the most abundant fossil fuel.
It is the cheapest fossil fuel.
And it takes a lot of processing to turn into its usable form.
Hope it helps :)))
Why does your heart have to pump your blood to your lungs BEFORE it can pump it to the rest of the body? Will mark brainiest please explain or I will flag. :)
THANKS
Answer:
Explanation:
Why does your heart have to pump your blood to your lungs BEFORE it can pump it to the rest of the body?
The right side of your heart receives oxygen-poor blood from your veins and pumps it to your lungs, where it picks up oxygen and gets rid of carbon dioxide. The left side of your heart receives oxygen-rich blood from your lungs and pumps it through your arteries to the rest of your body.
what is responsible for pumping blood to the lungs?
The oxygen-poor blood fills the right atrium and then flows to the right ventricle, where it is pumped to the lungs through the pulmonary arteries. The lungs refresh the blood with a new supply of oxygen, which comes from the air that you breathe in.
Which type of weather is most likely to occur along an occluded front?
A. Heavy rain and changing winds
B. thunderstorms
C. clouds with light rain
D. clear skies
Which of the following words or phrases acts as a signal for chronological sequence?
Answer:
FirstSecondThirdNext,Then,After(that),LaterAt lastLastlyPLEASE ITS URGENT!!!!!!!
1. Which of the following data are necessary to calculate population growth? (Choose all that apply)
1) growth rate
2)carrying capacity
3)birth rate
4)death rate
The following data are necessary to calculate population growth is the birth rate and the death rate.
How to explain population growth?
A population grows when there are more births than deaths, and also when there is a greater flow of immigration than emigration of people. Population growth refers to the increase in the number of individuals in a specific population.
In this case, population growth is the direct relationship between people who were born and who died, the population grows when the number of individuals being born is greater than the number of deaths and when the opposite occurs, growth declines.
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Answer:
carrying capacity, birth rate, death rate
Explanation:
I took the quiz.
A mother has a genotype of IAIA, and a father has a genotype of IBi. Which of the following describes the parents' phenotypes?
Individuals with genotype the IAIA or IAi have blood type A. The ones with IBIB or IBi have blood type B. Others with IAIB have blood type AB, and those with ii have blood type O. Mother has phenotype A and father has phenotype B.
What is genotype?Genotype is the genetic representation of an individual.
A blood genotype indicates the genetic composition of the blood type of an individual.
Blood genotype represents the following phenotype:
IAIA or IAi as blood group AIBIB or IBi as blood group B.IAIB as blood group AB.ii as blood group O.Thus, according to the given scenario, the genotype of mother is IAIA and father is IBi, so the phenotypes will be A and B respectively.
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Which word in this sentence is misspelled? We will have a party just in time for there birthday.
Answer:
there
Explanation:
"There" refers to a location. "They're" is a contraction of "they are." "Their" is the possessive form of "they." The correct form to use in this case it "their party."
The misspelled word in the sentence "We will have a party just in time for there birthday" is "there". It should be replaced by the word "their".
In the given sentence, the word "there" is used incorrectly. The word "there" is used as a pronoun to indicate a place. However, in the sentence given, the correct word should have been "their", which is a possessive pronoun that shows ownership of the birthday.
"Their" is used to indicate that the party is being held for someone else's birthday, as in "their birthday". Therefore, the correct sentence should read, "We will have a party just in time for their birthday."
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Where does replication begin?
A. in the middle of the strand
B. starter fragments
C. replication forks
D. at the very end of the strand
Answer: D. At the very end of the strand
Are Radar waves used to re-heat and cook food?
Answer:
I think it would be yes
Explanation:
Microwaves and infrared waves can heat up food but does not make food radioactive. The waves cause vigorous vibration of molecules in food resulting in high temperature that cooks the food.hope this helps if not let me know.
Why is fever an effective response to pathogens?(1 point)
Answer:
your body is trying to kill the virus or bacteria that caused the infection.
Explanation:
Most of those bacteria and viruses do well when your body is at your normal temperature. But if you have a fever, it is harder for them to survive. Fever also activates your body's immune system.
Explain the process of cell determination
Answer:
role in embryonic growth
depends on a process called cell determination, in which initially identical cells become committed to different pathways of development. A fundamental part of cell determination is the ability of cells to detect different chemicals within different regions of the embryo.
The process in which a previously undifferentiated cell is already programmed to become a specific cell type by following a specified path towards cell differentiation. Cell determination is influenced by the action of the extracellular environment and the contents of the cell's genome.
Are gender traits completely a result of societal expectations? #no need of internet answer #
Answer:
No. Gender traits in humans are largely determined by biophysical processes
Explanation:
Answer:
no
Explanation:
. Gender traits in humans are largely determined by biophysical processes.
What year were multistage
rockets proposed?
A. 1901
B. 1903
C. 1905
D. 1906
Answer:
1901
Explanation:
what type of evidence could you use to support the claim that all life on earth evolved from simple single celled organism
Answer:
Complex organisms evolved from more simple organisms
Explanation:
Fossil records support the fact that complex organisms evolved from more
simple organisms.
Fossils are remains of organisms that have been naturally preserved in rock
forms.
The study of fossilized remains of organisms has enabled scientists to
establish the fact that earlier organisms are simple types and more complex
organisms arose from them through a gradual process of change, otherwise
known as evolution. Carbon dating of fossils enables scientists to establish
the year the organism existed.
Explanation:
Correct me if I'm wrong can I get 1 brainliest ty
Blood type is inherited through multiple alleles. A В are co dominant and o is recessive. If the father has type Ao blood, and the mother is Bo; what is
the chance do they for an O type offspring?
1) 0%
2)25%
3)50%
4)75%
Answer:
2) 25%
Explanation:
To answer this question, we can draw a punnett square.
Father has type Ao, so he has one A allele, and one o allele.
Mother is type Bo, so she has one B allele, and one o allele.
_ | A | o
B | AB | Bo
o | Ao | oo
25% AB, 25% Bo, 25%, Ao, 25% oo
Since blood type o is recessive it will only be expressed phenotypically when not masked by a dominant allele which only occurs when the genotype is oo. Therefore the answer is 2) 25%.
Hope this helped!
