If an organism has more rods in its retina,it will be:

Aqueous humour is present

Given below are the two statements regarding photoreceptor cells of the human eye.
Statement $I$: The three types of cone cells have their own characteristic photopigments that respond to red,green,and blue lights.
Statement $II$: Sensation of white light is produced due to simultaneous equal stimulation of all three types of cone cells.
In the light of the above statements,choose the correct answer from the options given below:

In humans,corneal transplants are rarely rejected. This is because:

Corneal transplantation is highly successful because:

Which of the following is a characteristic of the human cornea?