Analogy: Haematology is to Blood as Phycology is to ____. Choose the correct field–subject mapping.

Introduction / Context:
Discipline–object analogies: haematology studies blood. Phycology is the study of what?

Given Data / Assumptions:

• Haematology ↔ blood.
• Phycology ↔ algae.

Concept / Approach:
“Phyco-” roots to algae/seaweed; mycology is fungi; ichthyology is fishes; pathology is diseases.

Step-by-Step Solution:
Map “phycology” → algae.

Verification / Alternative check:
Contrast with similar-sounding disciplines to avoid confusion.

Why Other Options Are Wrong:
They are subjects of other disciplines (fungi → mycology; fishes → ichthyology; diseases → pathology).

Common Pitfalls:
Mixing up similar Greek/Latin roots.

Final Answer:
Algae.