Give the biological/technical terms for the following.
i) A membrane which allows the passage of molecules selectively.
ii) The suppressed allele of a gene.
iii) Structure that carries visual stimuli from retina to the brain.
iv) WBCs squeeze through the walls of the capillaries into the tissue.
v) Protective coverings located round the human brain and spinal cord.
vi) Eye lens losing flexibility resulting in a kind of long sightedness in elderly people.
vii) Harmones which stimulate other endocrine glands to produce their specific harmones.
viii) The phase in the menstrual cycle in which the remnant of follicle in the ovary turns to Corpus luteum.
ix) Statistical study of human population.
x) Artificially introducing weakend germs or germ substance into the body for developing resistance to a particular disease.