Why was modern classification invented? A: traditional classification could not classify all living things. B:scientists realized related organisms do not share similar characteristics. C: Scientists understood that species share a common ancestor. D: modern classification is faster and easier to use.

QUESTION POSTED AT 18/01/2020 - 05:15 AM

Answered by admin AT 18/01/2020 - 05:15 AM

The correct answer is (c.) Scientists understood that species share a common ancestor. Scientists considered making a modern classification of an organism in order to organize in which these organisms belong to what ancestors. The Modern Taxonomy is the one responsible for classifying each organism.
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Related questions

Dichotomous keys ask A.open-ended questions about animal behavior. B.open-ended questions about easily observable characteristics. C.yes-or-no questions about animal behavior. D.yes-or-no questions about easily observable characteristics.

The right option is; D.yes-or-no questions about easily observable characteristics.

A dichotomous key is a tool designed by scientists to help its users to identify a particular type of object and organisms based on physical characteristics. A dichotomous key is divided into two sections and it usually contains specific questions with two choices (yes or no) in each step. When a question is answered, the key guides the user to the next question to ask until the user is able to correctly identify the name of the unknown organism.

ANSWERED AT 24/02/2020 - 12:37 AM


QUESTION POSTED AT 24/02/2020 - 12:37 AM

Phosphorous is an important component in which of the following? A) ATP B) DNA C) both A and B D) neither A nor B

Atp is the answer..............

ANSWERED AT 24/02/2020 - 12:37 AM


QUESTION POSTED AT 24/02/2020 - 12:37 AM

In pea plants, yellow (Y) seed color is a dominant trait, and green seed color (y) is a recessive trait. Which resulting plant with yellow seeds could produce a plant with green seeds in the next generation? A. YY B. Yy C. yy D. Yg

Answer: The correct answer is-

B. Yy

As per the information in the question,  yellow (depicted by Y allele) seed color is a dominant trait whereas green seed color is a recessive trait ( depicted by y allele).

A dominant trait always masks the expression of a recessive trait.

Presence of single dominant allele ( such as in Yy, which shows heterozygous dominant genotype) in the genotype can produce a dominant trait whereas recessive trait is only expressed when its genotype is homozygous recessive (such as yy that is both alleles should be recessive allele) .

A plant with genotype Yy will form two gametes that is Y and y.

When such plants are allowed to interbreed, there is a probability of 25% of producing green seeds in the next generation.

Refer punett square.

ANSWERED AT 24/02/2020 - 12:32 AM


QUESTION POSTED AT 24/02/2020 - 12:32 AM

Letter D is the part of the cell that makes proteins. What is letter D? A) ribosomes B) chromosomes C) chloroplast

the answer is A.RIBOSOMES

ANSWERED AT 24/02/2020 - 12:27 AM


QUESTION POSTED AT 24/02/2020 - 12:27 AM

A microbiologist is in the process of classifying a newly discovered organism. Its characteristics include: · eukaryotic · multicellular · reproduces by spores · motile in some stage of its life cycle · decomposer Which type of organism is it most likely to be? club fungus fungus-like protist plant-like protist sac fungus

Based on the characteristics of the new organism discovered by the biologist, it can be concluded that this organism is most likely a fungus-like protist. The organism is a multi-cellular eukaryote who reproduced by the spores and is motile in few stages of the life cycle. Besides all this it is a decomposer. This all characteristics fit the description of a fungus like protist. They are most commonly found on the dead wood, but they also produce spores like the fungi.

Hence, the correct answer is 'fungus-like protist'.

ANSWERED AT 24/02/2020 - 12:18 AM


QUESTION POSTED AT 24/02/2020 - 12:18 AM

____ is a layer of organic sediment. a. Peat c. Lignite b. Bituminous coal d. Anthracite coal

A.Peat organic matter which causes decaying matter 

ANSWERED AT 24/02/2020 - 12:11 AM


QUESTION POSTED AT 24/02/2020 - 12:11 AM

Why might introduction of exotic species disrupt an ecosystem? A. They're struggling to survive and can be disruptive. B. They die quickly and overfeed scavengers. C. There are very few of the organisms present. D. They can outcompete native species.

Answer: D. They can outcompete native species.

Exotic species are the species which are not native to the region to which they are introduced. They can be referred as alien, non indegenous species. These species are introduced either due to human intervention in order to use these species for their own benefit or these species migrate from their native land in search of food and other resources. These species may act as an invasive species, which means they compete with the native population for resources. Therefore, they will disturb the natural biodiversity of the ecosystem.

Hence, exotic species when introduced in an ecosystem they can outcompete native species.  

ANSWERED AT 24/02/2020 - 12:03 AM


QUESTION POSTED AT 24/02/2020 - 12:03 AM

How are mosses and horsetails similar to ferns

All of those are similar to each other because they are all weeds, or in other words they are all different types of grasses.

ANSWERED AT 24/02/2020 - 12:03 AM


QUESTION POSTED AT 24/02/2020 - 12:03 AM

Why do we forget things? (Like brain drain)

There's not enough room to remember EVERYTHING. Besides, some things are more important things to remember, so the brain "deletes" them.
Hope this helps~!
~{Oh Mrs.Believer}

ANSWERED AT 24/02/2020 - 12:00 AM


QUESTION POSTED AT 24/02/2020 - 12:00 AM

How is an individual palm tree growing in a tropical forest classified organism,population,abiotic,habitat

Answer:

The correct answer is- organism

Explanation:

An organism is an individual who has all the living characteristics. So an organism can be plat, animal, or a microorganism. So here we are talking about an individual palm tree and we know that a palm tree is a plant which has life so palm tree will be classified as an organism.

When many individuals of the same species are present in an area then it is called a population. The area where a population is living is called their habitat. Abiotic factors are the non-living things like air, water, soil. So the correct answer is- organism.

ANSWERED AT 23/02/2020 - 11:59 PM


QUESTION POSTED AT 23/02/2020 - 11:59 PM

Muscle cells have many mitochondria for A) energy. B) protection. C) divisibility. D) reproduction

A) Energy could be the answer.

ANSWERED AT 23/02/2020 - 11:58 PM


QUESTION POSTED AT 23/02/2020 - 11:58 PM

Which could be classified as part of an ecosystem but not part of a community trees,grasses,bacteria,minerals

The correct answer is minerals.

Minerals can be considered as the abiotic factor present in the ecosystem but it cannot be considered as a part of community.

Ecosystem can be defined as the interaction of the biotic (living things) and abiotic factor(non-living things) in which the plants, animals and human beings survive with each other.

Community can be defined as the group of organisms interacting among each other.

Minerals can be a part of ecosystem but not a part of community.

ANSWERED AT 23/02/2020 - 11:57 PM


QUESTION POSTED AT 23/02/2020 - 11:57 PM

What are some of the characteristics or signs of Down Syndrome?

Decreased or poor muscle tone
Short neck with excess skin at the back of the neck,
Flattened facial profile and nose
Small head ears and mouth,
Upward slanting eyes,often with a skin fold that comes out from the upper eyelid and covers the inner corner of the eye
White spots on the colored part of the eye (called Brushfield spots)
Wide short hands with short fingers
A single deep crease across the palm of the hand
A deep groove between the first and second toes

ANSWERED AT 23/02/2020 - 11:55 PM


QUESTION POSTED AT 23/02/2020 - 11:55 PM

During transpiration, water exits the leaf via the A. mycorrhiza. B. stomata. C. roots. D. tracheids.

B. The Stomata


The stomata are the pores of the leaves. They allow the exchanges of gas and contain what are called guard cells. These guard cells control the opening and closing. These pores allow for evaporated water to be released and carbon-dioxide to be collected.

ANSWERED AT 23/02/2020 - 11:54 PM


QUESTION POSTED AT 23/02/2020 - 11:54 PM

If you watch a star other than Polaris for two hours, how many degrees will it appear to rotate in the sky during that time? Select one: a. 60 degrees b. 0 degrees c. 15 degrees d. 30 degrees

A star moves 15 degrees each hour, so it would’ve moved 30 degrees in two hours.

D, 30 degrees.

ANSWERED AT 23/02/2020 - 11:54 PM


QUESTION POSTED AT 23/02/2020 - 11:54 PM

Why did the invention of pcr make dna fingerprinting possible

Answer:

With the invention of the PCR technique , DNA profiling took huge strides forward in both discriminating power and the ability to recover information from very small or degraded starting samples.

The process of PCR mimics the biological process of DNA replication but confines it to specific DNA sequences of interest.

In PCR process , the DNA sample is denatured into separate individual polynucleotide strands through heating. Two oligonucleotide DNA primers are used to hybridise to two corresponding nearby sites on opposite DNA strands. Thus two new copies of the sequences of interest are generated.

Repeated denaturation , hybridisation and extension in this fashion produce an exponentially growing number of copies of the DNA of interest.

Quantitative PCR methods enable automated , precise and high - throughput measurements.

ANSWERED AT 23/02/2020 - 11:50 PM


QUESTION POSTED AT 23/02/2020 - 11:50 PM

Many people try to eliminate fat from their diets. Which is one reason it is necessary for humans to eat fat? A.The internal organs are cushioned by fat. B.Eating fat is the fastest way to get energy. C.Fat stores less energy than polysaccharides. D.Saturated fats clear out the blood vessels.

Answer;

A.The internal organs are cushioned by fat.

Explanation;

-Most of the nutrients in food fall into three major groups: proteins, fats, and carbohydrates. The body uses fat as a fuel source, and fat is the major storage form of energy in the body.By supplying energy, fats save proteins from being used for energy and allow them to perform their more important role of building and repairing tissues.

Fat also has many other important functions in the body, and a moderate amount is needed in the diet for good health.They also cushion internal organs, provide insulation against temperature and also facilitate absorption of fat soluble vitamins.

ANSWERED AT 23/02/2020 - 11:45 PM


QUESTION POSTED AT 23/02/2020 - 11:45 PM

Aquatic organisms have only a predatory relationship with coral reefs. True or false

I believe the answer is false.

ANSWERED AT 23/02/2020 - 11:39 PM


QUESTION POSTED AT 23/02/2020 - 11:39 PM

Coral reef ecosystems support over a million different species. True or False

True millions of different species live on coral reefs

ANSWERED AT 23/02/2020 - 11:36 PM


QUESTION POSTED AT 23/02/2020 - 11:36 PM

Humans cannot digest food without the aid of small single-celled organisms that live in our digestive tract. These small organisms help humans digest food by breaking down complex food molecules. Which common name is associated with these single-celled organisms that help humans digest food? A) algae B) bacteria C) protozoa D) virus

Bacteria are single-celled organisms that help humans digest food.

Explanation:

The symbiotic association of bacteria and human is of importance in the process of digestion. These bacterias are found in our gut, large intestine and sometimes in small intestine also. These bacteria break down big molecules into useful forms. Bacteria are also responsible for producing vitamin k2 and vitamin B in large intestine. They also help in mobilising of xenobiotics, bile and sterols.

ANSWERED AT 23/02/2020 - 11:32 PM


QUESTION POSTED AT 23/02/2020 - 11:32 PM