Answer:
In Branchiostoma, it is used mainly for feeding. The pharynx consists of numerous pharyngeal bars, with pharyngeal slits between them. The animal sucks in water through its mouth and forces it out through the pharyngeal slits, capturing small food particles from the water
These other stimuli are known as s - deltas.
<h3>What is an example of a stimuli?</h3>
Anything that can cause a change in behavior or physical state is a stimulus. Stimuli is the plural of stimulus. External or internal stimuli can be used. The way a medication affects your body is an illustration of an external stimulus. Your vital signs altering as a result of a change in your body is an example of an internal stimulus.
<h3>Which 3 stimuli are they?</h3>
mechanical, thermal, and chemical stimuli can activate three different types of nerve endings. Some endings are more sensitive to one type of stimulus than the others, but all can detect all three.
<h3>What do humans respond to as stimuli?</h3>
Events in the environment known as stimuli have an impact on behavior. A single stimulus can perform a variety of tasks.
learn more about stimuli here
<u>brainly.com/question/26507060</u>
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The graph shows that the rate of photosynthesis increases with increased light intensity, other conditions being constant.
<h3>Photosynthesis and light intensity</h3>
From the graph, the rate of photosynthesis increases with an increase in light intensity.
At low light intensity, the photosynthesis rate increases with an increase in the concentration of carbon dioxide and level off at some point.
With medium light intensity, the rate of photosynthesis is about twice that of low light intensity under the same concentration of carbon dioxide. It also gradually levels off when the concentration of carbon dioxide reached a particular point.
The same trend applies to high light intensity. The rate of photosynthesis increased accordingly, much more than low and medium-intensity light.
Both light and carbon dioxide concentration can limit the rate of photosynthesis. When both factors are abundant, photosynthesis can be limited by other factors such as water, nutrient, etc.
More on light and photosynthesis can be found here: brainly.com/question/13201447
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Answer:
The answer is A) You would find 46 chromosomes in a Haploid cell and B.) You would find 23 chromosomes in a Diploid cell.
Explanation:
A human haploid cell, such as a skin cell, is a complete unit. It is capable of duplicating itself and the new cell has exactly the same number of chromosomes, which is 46.
A human diploid cell, such as a human egg cell, has half the number of chromosomes, which is 23.
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Answer:
The dominant curled wing allele is also a recessive lethal.
Explanation:
If we look at the F2 ratio we see that :
curled wings: straight wings= 160:80
=2:1
Hence, if curled wings is considered to be a dominant trait then Curled wings * straight wings
Dd x dd
Punnet square will be as follows :
d d
D | Dd | Dd
d | Dd | dd
Hence in order to get F2
Dd x dd
Punnet square will be the same as above if the F1 cross is Dd* Dd
D d
D DD Dd
d Dd dd
if DD is lethal then the ratio is
Dd:dd=2:1
that is curled wings: straight wings=2:1
Hence, The dominant curled wing allele is also a recessive lethal.
