Structure has no apparent function in a species, but is fully functional in the species' ancestors.
a) true
b) false

Answers

Answer 1

Answer:

The correct answer would be - True.

Explanation:

In several organisms have structures, has no apparent role in the particular species and are residual parts from a past ancestor, but these structures were fully functional in the ancestors of the species. These structures are called vestigial structures or organs.

The example of such structures are, wings of the flightless birds, appendix of human and many other, all these structures has no function in the body of the individuals of the particular species but is fully functional in ancestors.

Thus, the correct answer is - true.


Related Questions

What is a disadvantage of a 2D model of the digestive system?

Answers

Answer:

The disadvantage of 2D model of the digestive system is that it decreases cell to cell interaction and it is not a very important biological model.

Explanation:

The 2D model does not show quality similarity and resemblance to the main digestive system and also fail to reveal the interaction of cell surfaces of each other, it does not provide the quality detail of biological systems in digestive systems and this model is not very important or relevant biological model because It does not provide quality detail.

80 POINTS
What does Eureka mean, and who is famous for using the word and why?
What was so clever about what Archimedes did?

Answers

Archimedes has gone down in history as the guy who ran naked through the streets of Syracuse shouting "Eureka!" — or "I have it!" in Greek. The story behind that event was that Archimedes was charged with proving that a new crown made for Hieron, the king of Syracuse, was not pure gold as the goldsmith had claimed.hopes this helps

Answer:

Explanation:hhjnj

physical education have the relation with health education justify​

Answers

yes because it helps get your body right and fit and helps strengthen your muscles when you work out giving you a low percentage of getting diabetes and other unhealthy diseases
physical education helps you remain healthy and strong, which is a relation with health education

Organelles such as mitochondria and the endoplasmic reticulum have membranes that compartmentalize reactions and other metabolic processes. To
function properly, the organelles must move substances across their membranes.
Which of the following statements describes a feature shared by mitochondria and the endoplasmic reticulum that increases the efficiency of their basic
functions?
A
They have rigid, nonfluid membranes.
B
They have highly folded membranes.
С
They have membranes composed of many carbohydrates,
D
They have double membranes, with one membrane enclosed within the other

Answers

Answer:

b

Explanation:

Help me anyone if you would please

Answers

Answer:

A

Explanation:

6938
The primary purpose of monoculture cropping is to maximize yields, while minimizing costs.
Select one:
-True
-False

Answers

I believe the answer is true

Ancient Greek philosophers spent lots of time thinking about science and imaging explanations for the natural world. What part of the scientific process did they need to do

Answers

Answer:

Experiments

Explanation:

The ancient Greek philosophers spent more time philosophising and thinking about scientific explanations to phenomena in the natural world.

How ever, they relied solely on reasoning while attempting to explain scientific observations. Contemporarily, science is highly empirical. The scientific process can only be complete when scientific observations are subjects to rigorous experiments in order go determine the actual relationship between variables and provide better explanation for scientific observations.

Hence the ancient Greek philosophers should have used experiments rather than sole reason in proffering scientific explanations to natural phenomena.

Answer:

Experiments

Explanation:


The ancient Greek philosophers spent more time philosophising and thinking about scientific explanations to phenomena in the natural world.

which is an example of kinect energy​

Answers

Answer:

A

Explanation:

Kinetic energy is the energy of mass in motion, a skateboard rolling across the street is moving, therefore it has kinetic energy.

Answer:

A: a skateboard rolling across the street

4. Which level of organization is made of similar cells working together?
For example, many muscle cells working together.

Answers

The level of organization would be a tissue. Tissues are the second level of organization made up of many cells working towards a common goal/ function.
Tissues are the body cells that work together

What is the Richter Scale?

Answers

Answer:

The Richter scale is a numerical scale for expressing the magnitude of an earthquake on the basis of seismograph oscillations. The more destructive earthquakes typically have magnitudes between about 5.5 and 8.9; the scale is logarithmic and a difference of one represents an approximate thirtyfold difference in magnitude.

Explanation:

Answer:

a numerical scale for expressing the magnitude of an earthquake

Explanation:

A molecule of
is shaped like a double helix, which
makes it look like a spiral staircase,

Answers

Answer:

DNA

Explanation:

dna has a double helix structure. making it look like a spiral staircase

Which list below correctly shows the levels of organization in an organism from left to right? organs, tissues, systems, cells, organisms tissues, cells, systems, organs, organisms organisms, cells, tissues, organs, systems cells, tissues, organs, systems, organism​

Answers

Answer:

Cell-tissue-organ-organ system and finally an organism

Explanation:

The list that correctly shows the levels of organization in an organism is from left to right is  :

Cell --> Tissue ---> Organ ----> System -- > Organism

The cell is the basic unit of life, a group of similar cells performing similar functions make up a Tissue. While tissues perform more specialized functions when compared to cells.

Tissues make up an organ while a system like Digestive system , respiratory system, reproductive system are made up of a group of organs performing similar functions. The collection of all  systems make up an organism.

Hence we can conclude that the  list that correctly shows the levels of organization in an organism is from left to right is  Cell --> Tissue ---> Organ ----> System -- > Organism

Learn more : https://brainly.com/question/20203167

Use the graph below to answer the question.How does temperature change with the depth of the earth?

Answers

Dunnno homie sorry bro 哈哈哈哈哈哈

BRAINLIEST!! Are frogs amphibians or reptiles?

Answers

Answer:

amphibians

Explanation:

amphibians are organisms that can survive both in and out of water

Answer:AmphibiansHope this helps, have a great day, stay safe, and positive!!:)

Which of the following pairs is not a correct monomer/polymer pairing?
A. Monosaccharide/polysaccharide.
B. Amino acid/protein.
C. Triglyceride/cellulose.
D. Nucleotide/DNA.
E. Nucleotide/RNA.

Answers

C, triglyceride and cellulose

triglycerides make up lipids. cellulose is not a lipid, but a carbohydrate. carbohydrates are made from sugars :)

Answer:

He is right i took the test

Explanation:

Ecosystem services are services that are supplied by humans for the environment.
O a. True
O b. False

Answers

Answer:

b) false

Explanation:

ecosystems services benifit humans, but are not supplied by humans. ecosystems can and do exist without human intervention

The first step of the scientific process is
A. Making an observation
B. Testing a hypothesis
C. Communicating your findings in a journal

Answers

Answer:

A. Making an observation

Explanation:

Before you can communicate findings, you first need to have findings. And before you can test a hypothesis, you first need to come up with a hypothesis, which can be done by first making an observation.

What's the independent and the dependent variable ??

Answers

Answer:

ruler

Explanation:

The independent variable is the temperature and the dependent variable is the bacterial growth

You do things to keep your body in balance every day. What things do you try to keep balanced in your everyday life?

Answers

Answer:

Stretches, Exercise, run 30 mins a day, eat healthy food like apples strawberries, drink water ,and sleep at the best time of the day around 9:30 or 10:26 pm

I go to the gym wake up like 7:30 a.m. drink water everyday, eat healthy like salad, fruit.. also walk for like 30 minutes. something really important always keep you mind saying you can do it because if you don't keep thinking about that you just going to be like I "never going to do this" "how much just i give up" No it's important the reminder you can do it

hope this help ;)

If you add heat to fructose what color would it change to

Answers

Answer:

like some sorta yellow, brownish color.

Explanation:

Looks like a whole pot of weed wax

As a scuba diver descends toward the bottom of the ocean, she experiences the sensation of her ears "popping." Based on your observations from the Can Crush Lab, why would this happen?
A. Decreased pressure inside the diver's oxygen tank causes pressure on the diver's ears.
B. Increased pressure inside the diver's oxygen tank causes pressure on the diver's ears.
C. Pressure increases on the diver as the diver descends deeper underwater.
D. Pressure decreases on the diver as the diver descends deeper underwater.

Answers

Answer:

C. Pressure increases on the diver as the diver descends deeper in the water.

Explanation:

Due to the pressure of the water on the diver she feels the pressure on her ears. Just like the same feel of going up a steep hill.

Answer:

C. Pressure increases on the diver as the diver descends deeper in the water.

Explanation:

A scientific observation is different from a inference. An inference involves a degree of probability that an scientific observation does not. Elaborate on this statement.
A) An inference is a statement that goes beyond what can be observed.
B) An inference provides the closest approach to certainty without actual observation.
C) An inference is a prediction based on new knowledge that you acquire from research.
Eliminate
D) An inference is the result of running one or more tests about what you believe to be true.

Answers

Answer:

C) An inference is a prediction based on new knowledge that you acquire from research.

Eliminate.

Explanation:

ikk..........

Answer:

A) An inference is a statement that goes beyond what can be observed

in eukaryotic cells, dna replication occurs in the

Answers

dna replication occurs inside the nucleus :)

Answer:

inside the nucleus

Explanation:

dna replication in eukaryotic cells occurs in the nucleus

what is the process to determine the mass of a powdered substance using a weigh boat?

Answers

Answer:

Explanation:

The mass of the substance is determined by subtracting the first reading from the second. A container holding the substance of interest is placed on the balance and weighed. This is the first reading. The substance to be used is removed from the container and the container weighed again.

Of the following statements, select all (2) that are true.

Answers

Answer:

First one and third one

Explanation:

I just did it and got it right hope this helped

1) A class collected water samples from a nearby pond and wants to observe the samples for
microorganisms. Which microscope would be the most appropriate for the students to use?
A. Dissecting microscope
B. Compound light microscope
I
C. Transmission electron microscope
D. Scanning electron microscope

Answers

Answer:

Compound light microscope

Explanation:

This is the ideal microscope because it requires the passage of  harmless beam of light through the specimen.Since the pond contain living creatures this is best to use.

C and D both require the transmission of beam of electrons through a sample. D depends on the reflection of the electron  after scanning the specimen surfaces and sent this to the lenses of the observer.(C)involved the  passing of the beam of electrons through the specimen the interaction of the electrons with the atoms in the specimen(,therefore in both cases  these specimens can not be wet and living.

The specimen should be dry in both cases and therefore non -living ,because the chamber for the specimen must be a vacuum,and living organism can not survive in the vacuum. Thus pond water can not be used as specimen because the specimen in the water but me be living.

Which statement describes a similarity between asexual reproduction and sexual reproduction? Both processes involve fertilization. Both processes involve cell division. Both processes produce genetically identical offspring. Both processes require two parents.

Answers

Answer:

The correct answer is B. Both processes involve cell division.

Explanation:

Both asexual and sexual reproduction involve cell division; they are means of creating offspring.

Only sexual reproduction involves fertilization, so we know that choice A is incorrect.  Only asexual reproduction produces genetically identical offspring, so choice C is also incorrect.  Finally, only sexual reproduction requires two parents, so choice D is not correct either.

This leaves us with choice B as the correct answer.

Hope this helps!

Answer:

Answer is B

Explanation:

I got 92%, so there's a 2/25 chance that this answer is wrong, pls tell me if it's wrong

What happens to blood once oxygen hits and why?

Answers

Answer:it changes colour

Explanation:

When blood passes through the lungs, the hemoglobin absorbs oxygen from the air we breathe and turns bright red. Our heart then pumps this blood all over the body. When it reaches its destination, the oxygen is released from the hemoglobin, and the hemoglobin turns a darker red-brown.

I need help with this so hard emt class

Answers

Answer:

I can give u a advice

Ctrl + U

Click this and go to da bottom of page u can see da answers there

If u have any questions ask me

What is lost to the environment at each of the trophic levels of this ecosystem?

Answers

Answer:

90% of energy

Explanation:

only 10% of energy is passed on to the next trophic level.

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