Hilum vs. Micropyle

Hilumnoun

(botany) The eye of a bean or other seed; the mark or scar at the point of attachment of an ovule or seed to its base or support.

Hilumnoun

(botany) The nucleus of a starch grain.

Hilumnoun

(anatomy) A depression or fissure through which ducts, nerves, or blood vessels enter and leave a gland or organ; a porta.

Hilumnoun

The eye of a bean or other seed; the mark or scar at the point of attachment of an ovule or seed to its base or support; - called also hile.

Hilumnoun

The part of a gland, or similar organ, where the blood vessels and nerves enter; the hilus; as, the hilum of the kidney.

Hilumnoun

(anatomy) a depression or fissure where vessels or nerves or ducts enter a bodily organ;

Hilumnoun

the scar on certain seeds marking its point of attachment to the funicle

Micropylenoun

(botany) In seed-bearing plants, a small opening in the integuments of the ovule through which sperm are able to access the ovum.

Micropylenoun

(zoology) The hilum of an ovum at the point of attachment to the ovary; any opening in the coverings of an ovum by which spermatozoa may find entrance.

Micropylenoun

An opening in the membranes surrounding the ovum, by which nutrition is assisted and the entrance of the spermatozoa permitted.

Micropylenoun

minute opening in the wall of an ovule through which the pollen tube enters