<h2>
Iris controls the dilation and constriction of the pupil</h2>
<u>Explanation:</u>
<em>Iris</em> is the part of the eye which is involved in controlling of the working mechanism of the pupil. It is a thin membrane which surrounds pupil. The specialized muscle present in Iris region of the eye are involved in controlling of light entry and its effect on the pupil.
When the light entering the eyes are very bright, it makes the<em> </em><em>iris to constrict</em><em> </em>and which in turn causes the <em>pupil to constrict,</em> whereas when the light entering the eyes is very dim, the<em> </em><em>iris dilates</em> and causes <em>pupil to dilate</em>.
Answer: Option D
Explanation:
The blood from the mother carrying oxygen, and essential nutrients is carried to the fetus.There is no different system available in the developing fetus which aids in its growth and development.
The region representing A provides oxygen and nutrients to the fetus and removes carbon dioxide from fetus.
This can be defined as an intersection between the fetus and mother so that there can be exchange of materials.
Answer:
Complete smaller studies over a longer period.
Explanation:
Insread of giving up, it's best to cut the experiment and do some study at a time. You can save Money
Answer:
Chloroplast
1. Help in photosynthesis
2.Plant cell
3.It is where chlorophyll is formed and this chlorophyll traps sunlight for photosynthesis.
4. C6H12O6 + 6O2--------> 6CO2 + 6O2 + Energy
Mitochondria
1.It posses it own DNA and also has a big surface area which makes it possible to generate more energy then supply them in the cells.
(C)theories can be used to predict the existence of as of yet unobserved things or phenomena
