Question

polychrome : monochrome ::
a. solitude : multitude
b. neurosis : psychosis
c. square : line
d. ultimogeniture : primogeniture
hemorrhage : hemostat ::
a. path : gate
b. water : dam
c. film : sequel
d. cell : vacuole
ichthyosis : neurosis ::
a. dermatitis : psychosis
b. psychopath : sociopath
c. ultimate : penultimate
d. euphoria : dysphoria
obsequious : domineering ::
a rectitude : turpitude
b. flatter : fawn
c. mezzotint : polychrome
d. slave : master

Explanation:

• polychrome : monochrome :: ultimogeniture : primogeniture:
• "Polychrome" means having many colors and "monochrome" means having one color. They are antonyms related to the number (prefixes "poly - " meaning many and "mono - " meaning one).
• "Ultimogeniture" is the inheritance by the youngest child and "primogeniture" is the inheritance by the first - born child. They are antonyms related to birth order (prefixes "ultimo - " meaning last and "primo - " meaning first).
• hemorrhage : hemostat :: water : dam:
• A "hemostat" is an instrument or agent that stops "hemorrhage" (bleeding).
• A "dam" is a structure that stops or controls the flow of "water".
• ichthyosis : neurosis :: dermatitis : psychosis:
• "Ichthyosis" is a skin disorder and "neurosis" is a mental disorder.
• "Dermatitis" is a skin disorder and "psychosis" is a more severe mental disorder. The relationship is disorder in a physical (skin) and mental domain.
• obsequious : domineering :: rectitude : turpitude:
• "Obsequious" means overly submissive and "domineering" means overly controlling. They are antonyms.
• "Rectitude" means moral uprightness and "turpitude" means moral depravity. They are antonyms.

Answer:

1. d. ultimogeniture : primogeniture
2. b. water : dam
3. a. dermatitis : psychosis
4. a. rectitude : turpitude