The eyes of some birds contain cells that detect ultraviolet (UV) light.
UV light is reflected by some fruits and the urine of small mammals.
Explain how birds that detect UV light have evolved from birds that could not detect
UV light
[6 marks

Answers

Answer 1

Birds that detect UV light have favorable characteristics that enable them to survive and reproduce. These  characteristics are passed on to their offspring.

According to Darwin's theory of evolution, organisms that are better adapted to their environment live long enough to survive and reproduce and pass on these favorable traits to their offspring.

Since birds depend on these fruits for food and these fruits reflect UV light. A bird that can not detect UV light will find it difficult to obtain food. Hence, birds that have developed the ability to detect UV light will live long enough and reproduce, passing on these favorable characteristics to their offspring. Hence, birds that can detect UV light appears from birds who do not originally detect UV light.

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Related Questions

which type of organism can use photosynthesis to make food

Answers

Answer:Plants

Plants, algae, and a group of bacteria called cyanobacteria are the only organisms capable of performing photosynthesis (Figure 1). Because they use light to manufacture their own food, they are called photoautotrophs (literally, “self-feeders using light”).

Explanation:

Answer:

All plants with green leaves, from the tiniest mosses to towering fir trees, synthesize, or create, their own food through photosynthesis. Algae, phytoplankton, and some bacteria also perform photosynthesis. Some rare autotrophs produce food through a process called chemosynthesis, rather than through photosynthesis.

What effect would uncontrolled population growth have on land?*

A) increased soil fertility and decreased erosion
B) increased soil fertility and increased erosion
C) decreased soil fertility and decreased erosion
D) decreased soil fertility and increased erosion

Answers

(D) is the right answer ........

Uncontrolled population growth affect the soil fertility and soil erosion i.e. it decreases soil fertility and increases soil erosion.

what is uncontrolled population growth?

uncontrolled population growth  is the area where the proportion of urban population has increased faster than the nation's average rate of population growth.

what is soil erosion ?

soil erosion is a gradual process that occurs when the impact of water or wind detaches and removes soil particles, causing the soil to deteriorate.

what is soil fertility ?

soil fertility is the ability of a soil to sustain plant growth by providing essential plant nutrients and favorable chemical, physical, and biological characteristics as a habitat for plant growth.

The population increases so that the demand for food increases, lack of arable land leads to intensive cultivation, reclamation to expand cultivation land on sloping hills increases soil erosion, causes degradation, infertile soil.

Therefore, use of chemical fertilizers and plant protection chemicals makes land resources, surface water sources of the mainland contaminated.

Reclamation makes area of ​​forestland narrowed, depletion of natural resources, natural environment polluted.

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When someone is infected with cholera, the cholera toxin acts as a

A. ligand
B. receptor
C. cellular response
D. nucleus

Answers

Answer:

I think it acts as a receptor

B. Receptor ok ok ok ok ok ok

plz help any one pls

Answers

Answer:

Glycerin

Explanation:

Substances with strong electronegative forces between the molecules tend to have higher boiling points, because it takes more energy (temperature in this case) to break the bonds and change the phase of the substance.

help!
Which description is not a property of an acid?

Sour taste
Slimy Feel
dissolve metals
corrosive

brainliest will be possible!! ​

Answers

Answer:

Slimy feel, you can know this because citric acid or Lemmon juice

Explanation:

How the form of ostrich’s eggs help the bird survive?

Answers

Answer:

Adaptations that make ostriches fast on land but unable to fly include long legs with strong muscles, thick bones and powerful 2-toed feet

why do earthquakes and volcanoes occur a long destructive and conservation plate boundaries?​

Answers

Answer:

because the plates do not pass smoothly there will be some interaction in both of them

In 350 words explain what effects forest fires have on the environment while its burning and how it effects people and animals in the area.​

Answers

Wildfires release large amounts of carbon dioxide, black carbon, brown carbon, and ozone precursors into the atmosphere. These emissions affect radia]on, clouds, and climate on regional and even global scales. Wildfires Affect Air Quality.As fires burn, carbon stored in trees and other vegetation combusts, releasing carbon dioxide and other potent greenhouse gases such as methane and nitrous oxide into the atmosphere. This means that as fires increase, so do emissions.Wildfires emit carbon dioxide and other greenhouse gases that will continue to warm the planet well into the future. They damage forests that would otherwise remove CO2 from the air. And they inject soot and other aerosols into the atmosphere, with complex effects on warming and cooling.

To be sure, the leading cause of global warming remains overwhelmingly the burning of fossil fuels. That warming lengthens the fire season, drying and heating the forests. In turn, blazes like those scorching areas across the Northern Hemisphere this summer have a feedback effect—a vicious cycle when the results of warming produce yet more warming

What is the role of transgenic organisms in the production
of medicine and agriculture?
HELP PLA

Answers

Explanation:

Transgenic animals are routinely bred to carry human genes, or mutations in specific genes, thus allowing the study of the progression and genetic determinants of various diseases.

Transgenesis allows improvement of nutrients in animal products, including their quantity, the quality of the whole food, and specific nutritional composition.

what starting materials do cells need for cellular respiration

Answers

Answer:

Oxygen and glucose

Explanation:

both reactants in the process of cellular respiration. The main product of cellular respiration is ATP; waste products include carbon dioxide and water.

What do organisms do with the products of cellular respiration?

Answers

Explanation:

it combine oxygen with foodstuff molecules, diverting the chemical energy in these substances into life sustaining activities and discarding

How does cytokinesis in plant cells differ from cytokinesis in animal cells?



animal cells form a cell plate



plant cells form a cell plate



plant cells go through the process in reverse



plant cells go through two rounds of cytokinesis while animal cells just do once

Answers

Explanation:

the second option is correct I think

Pls fill in the balnks

The ______________ contains the reproductive organs of the plants.

Cell wall is mainly composed of _________________.

The seven main organs of flowering plants are: i. ____________ ii. _______________ iii. ______________ iv. __________________ v. ________________ vi. _________________ vii. _________________

Red blood cells carry ___________ around the body.

Another name of white blood cell is _____________

____________ are the most numerous things on the planet.

_______________ cell has a large number of chloroplasts.

Answers

Answer:

The _____flower_________ contains the reproductive organs of the plants.

Cell wall is mainly composed of ______cellulose___________.

Organ # 1. Roots:

Organ # 2. Stems:

Organ # 3. Leaves:

Organ # 4. Inflorescence:

Organ # 5. Flowers:

Organ # 6. Fruits:

Organ # 7. Seeds:

Explanation:

Answer:flower

Explanation:flowers in a plant have the reproductive system

What is the genetic makeup of offspring resulting from mitosis?

A. They are genetically identical to the parent cell.
B. They have half as many chromosomes as the parent cell.
C. They have twice as many chromosomes as the parent cell.
D. They share half their genes in common with both parents.

Answers

A. That good answer

Answer:

Mitosis means the offspring is identical! So answer is A!

Spiritual wellness is to posses a set of guiding beliefs, principles, or values that give meaning and purpose to your life.
A.
True
B.
False

Answers

Answer:

A

Explanation:

Its true

Answer is A give the guy above brainiest he’s correct

Which is NOT
involved with an
inflammatory
response?
A. fever - increased temperature
B. slowed blood flow
C. white blood cells move to the area of infection
D. inflammation in area

Answers

Out of the given answers B. slowed blood flow is not involved with an inflammatory response.

During an inflammatory response, several physiological changes occur in the body to combat infection or injury. Let's briefly discuss the other options to understand their involvement in the inflammatory response:

A. Fever - increased temperature: Fever is a common feature of an inflammatory response. It is caused by the release of certain chemicals called pyrogens that act on the hypothalamus in the brain, raising the body's temperature. The increased temperature helps to enhance the immune response and inhibit the growth of certain pathogens.

C. White blood cells move to the area of infection: Inflammation triggers the recruitment of white blood cells, such as neutrophils and macrophages, to the site of infection or injury. These immune cells play a crucial role in identifying and eliminating pathogens, as well as removing damaged tissue and promoting tissue repair.

D. Inflammation in the area: Inflammation is a hallmark of the inflammatory response. It involves localized redness, swelling, heat, and pain at the site of infection or injury. Inflammation helps to isolate the area, prevent the spread of infection, and promote healing.

B. Slowed blood flow: Slowed blood flow is not a characteristic of the inflammatory response. On the contrary, inflammation often leads to increased blood flow in the affected area, resulting in redness and heat. The increased blood flow facilitates the delivery of immune cells, oxygen, and nutrients to the site, aiding in the immune response and tissue repair.

In conclusion, slowed blood flow is not involved in the inflammatory response, while the other options (fever, white blood cell recruitment, and inflammation) are key components of the inflammatory process. Therefore, the correct answer is B.

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Which of the following is not found in allcells? DNA Plasmamembrane Cytoplasm Lysosome

Answers

Answer:

Lysosome

Explanation:

What is the difference between chemiosmosis and oxidative phosphorylation?​

Answers

oxidative phosphorylation: A metabolic pathway that uses energy released by the oxidation of nutrients to produce adenosine triphosphate (ATP). chemiosmosis: The movement of ions across a selectively permeable membrane, down their electrochemical gradient.

The term ____ refers to anatomical structures that are found on the same side of the body.

A. Contramedial
B. Bilateral
C. Contralateral
D. Ipsilateral

Answers

Answer:

D. Ipsilateral

Explanation:

Ipsilateral is the occurrence of anatomical structures like the muscles, body organs, parts, etc., on the same side of the body. Thus, option D best fits the blank.

What is Ipsilateral?

Ipsilateral is an anatomical terminology that defines the position, regions, and body structures that lie or occur on the same side of the body. On contrary, contralateral defines the structures on the opposite side of the body.

Bilateral is an anatomical term that refers to the anatomical structures that are present on the left and right side of the body and affects both sides. It defines the symmetry of the body.

Therefore, the Ipsilateral refers to structures of the same side.

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Which of the following changes would likely increase rates of photosynthesis?
Decreasing the temperature
Decreasing the carbon dioxide
O Increasing the carbon dioxide
Increasing the distance of a plant from a light source

Answers

Increasing the carbon dioxide would increase the rate of photosynthesis

can someone please help me out :)

Answers

Answer:

A

Explanation:

The pharynx is part of the digestive system as well as the respiratory system because it carries both food and air.

I like her and I scare to tell her

Answers

Answer:

just let your heart ❤out she may like you too.

a) Name three adaptations this plant has that allow it to live on land, and describe
how each adaptation helps the plant survive. (6 points)
I

Answers

Answer:

Explanation:

Sunflowers thrive in slightly acidic to somewhat alkaline soil (pH 6.0 to 7.5). Sunflowers are heavy feeders, so the soil needs to be nutrient-rich with organic matter or composted (aged) manure. Or, work in a slow release granular fertilizer 8 inches deep into your soil.The stem of the sunflower has bristles, these are to prevent water loss as well as deter animal predation. The leaves are oppositely positioned leaves

It has adapted to this necessity by having a heliotropic head which rotates to follow the sun, hence the name sunflower. ... The stem of the sunflower has bristles, these are to prevent water loss as well as deter animal predation. The leaves are oppositely positioned leaves and broad to absorb sunlight for photosynthesis.and broad to absorb sunlight for photosynthesis.

PLEASE HELP WORTH 40 POINTS

Answers

Explanation:

Which question, is it b, c or 4

Describe the stages used to produce a cloned mammal

Answers

The egg cell must first be enucleated through the process of removing the nucleus from the surrogate mother’s egg. An adult cell nucleus from the desired mother is then inserted into the enucleated egg. This combination of adult cell nucleus inside the enucleated egg must now be stimulated with an electric shock. This will cause the start of cell division by mitosis to eventually form an embryo in the uterus of the surrogate mother whom the initial enucleated egg belonged to.

A gene that is not expressed when paired with a dominant allele is called alan
trait
mutation
base pair
recessive allele

Answers

The answer is the recessive allele

Answer:

recessive allele

Explanation:

:D

Original dna: CTGCAA
MUTATED DNA: CGCAA

THIS IS AN EXAMPLE OF

Answers

an insertion mutation

Science Experiment: Part 2
Your final report needs to include the items listed below, so keep these in mind as you complete your experiment
• An introduction connecting your experiment to other work in forestry
• Your hypothesis and a brief overview of your experiment
• A written description of the steps of your experiment to accompany a picture or video journal documenting the steps
• Measuring, in at least one of the steps
• The results of your experiment
• A one-page conclusion discussing the results of your experiment whether the experiment proved your hypothesis and how the results relate to the work described in the articles
about forestry that you have read

Answers

Answer:

ok

Explanation:

Coronary heart disease is the main cause of death in our country. The following factors can increase the risk of an individual contracting this disease:
-smoking
-unbalanced diet
-unhealthy lifestyle
Explain how these factors can contribute to coronary heart disease.​

Answers

Smoking :-

The coronary arteries inside us are responsible for supplying our heart muscles with O₂ rich blood. When people smoke, plaque builds up in the arteries & the O₂ rich blood will not get supplied to the hear muscles causing atherosclerosis / coronary heart disease.

Unbalanced Diet :-

Eating an unhealthy diet which is high in cholesterol & fats also causes atherosclerosis (coronary heart disease). Too much salt in the diet can also raise blood pressure which is another factor responsible for this disease.

Unhealthy Lifestyle :-

Unhealthy lifestyles like not exercising at all & being obese lead to atherosclerosis (coronary heart disease).

_______

Hope it helps ⚜

Hey, I need help with these questions please:

Answers

Answer:

its B synthesis

Explanation:

Unlike true organisms, viruses cannot synthesize proteins, because they lack ribosomes (cell organelles) for the translation of viral messenger RNA (mRNA; a complementary copy of the nucleic acid of the nucleus that associates with ribosomes and directs protein synthesis) into proteins.

Ans: Transporting.

That is the answer
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