Give the biological / technical terms for the following:

Give the biological / technical terms for the following:

(a) The respiratory pigment found in RBCs.

(b) The veins which start with capillaries and end in capillaries.

(c) The part of the eye grafted during eye donation.

(d) Collective term for the protective coverings of the brain and spinal cord.

(e) The epidermal pores through which guttation takes place.