Answer: Speciation
Speciation is biological process in which new species are formed from the existing species. This occurs when the members of the population gets separated from others by a geographical, behavioral or other barriers. Such separated organism develop traits with the course of evolution, which makes them reproductively isolated with the parent population. The speciation can be of two types:
1. Allopatric speciation: The separated population evolve into separate species due to a geographical isolation.
2. Sympatric speciation: The separated population evolve into separate species without any geographical isolation.
Answer:
Thus, the minimum number of photons per second is 77.34
Explanation:
Light intensity, 
= 
Pupil has a diameter, d = 8.5 mm
= 8.5 x 
m
Radius of the eye, r = 4.25 x m
∴ Area of the eye, A = 
= 
= 
Let 
be the minimum number of photons.
Therefore, = x A
= 
x 
= 
W
Thus the minimum number of photons is given by
where E = 
= 
= 
Therefore, 
= 
= 77.34 photons per second
Thus, the minimum number of photons per second is 77.34
Answer and Explanation:
If the endolymph is mixed with the perilymph then their potassium levels will tend to reach to equilibrium as it is stated that the intermediate membrane have been ruptured. The potassium level will decrease here.
In stereocilia the concentration of the potassium will also tend to reach equilibrium because the membrane is ruptured and the flow of the ions will not remain unidirectional.
The calcium concentration is more in the perilymph as compared to endolymph so the rupturing will allow more calcium ions to get incorporated in the hair vesicles.
The hearing will be affected by mixing of endolymph and perilymph as it will disturb the concentration of various ions and hence the ion channel will be clogged and there will be hearing loss.
Answer:
There are 32 permanent teeth, and the wisdom teeth are the last to emerge.
Answer:
A. supplementary motor cortex; premotor cortex
Explanation:
The supplementary motor cortex, also known as the supplementary motor area (SMA), is an area of the cerebral cortex located anterior to the premotor cortex. This area (SMA) is involved in the execution of complex and rapid sequential movements (e.g., typing). Moreover, the premotor cortex is an area of the motor cortex located between the primary motor cortex and the prefrontal cortex. This area (premotor cortex) is activated during motor tasks including, among others, spatial and sensory guidance of movement.
