Name two common defects of the eye.

Name the common function that cotyledons and nucellus perform

A man is wearing spectacles of focal length +1 m. What can be the defect in the eye ?

Mr Bharat's 65 year old mother was complaining about blurred vision in both the eyes due to which she could not see things clearly, Mr Bharat took his mother to an eye hospital. The doctor examined her eyes carefully and concluded that she has a medical condition which could not be corrected by using any type of spectacle lenses and it required surgery. Her eyes were operated upon and she could then see once again properly. What could be the defect in the eyes of Mr Bharat's mother?

An eye camp was organised by the doctors in a village. They found that the eyes of aged people in the village have the near point receded and the far point also gets reduced. Often aged people suffer from both myopia and hypermetropia. Doctors (opthalmologists) provide these people spectacles of bi-focal lenses to correct the defects. The people were happy and grateful to the doctors. Name the eye defect from which the people were suffering

Brassica Campestris Linn (a) Give the common name of the plant, (b) What do the first two parts of the name denote? (c) Why are they written in italics? (d) What is the meaning of Linn written at the end of the name ?

An eye camp was organised by the doctors in a village. They found that the eyes of aged people in the village have the near point receded and the far point also gets reduced. Often aged people suffer from both myopia and hypermetropia. Doctors (opthalmologists) provide these people spectacles of bi-focal lenses to correct the defects. The people were happy and grateful to the doctors. Give any two causes of this defect.

Give the scientific names of the following parts of the eye : (a) Carrying signals from an eye to the brain. (b) A small opening (hole) in the middle of the iris.