Read the explanations given below and name the structures:

Umbilical cord

(a) The fibres which hold the lens of the eye in position.

(b) The cells of the islets of Langerhans that secrete the hormone glucagon.

(c) The part of the chloroplast where the light independent phase occurs.

(d) Cap like structure seen around the head of the human sperm.

(e) The glands located at the upper sideward portion of the orbit of eye.

(a) Suspensory ligaments

(b) Alpha cells

(c) Stroma

(d) Acrosome

(e) Lacrimal glands