Concept:
A curriculum is the complete educational plan that includes learning objectives, teaching methods, assessment strategies, co-curricular activities and the syllabus.
A syllabus is a part of the curriculum that specifies the topics and content to be taught in a particular subject.
Step 1: Understand the relationship.
\[
\boxed{\text{Curriculum} \supset \text{Syllabus}}
\]
This means the syllabus is included within the curriculum.
Step 2: Analyse the options.
• Syllabus is a part of curriculum -- Correct. \checkmark
• Curriculum is a part of syllabus -- Incorrect.
• Syllabus is an annexure to the curriculum -- Incorrect.
• Curriculum is an annexure to the syllabus -- Incorrect.
Step 3: Final conclusion.
Hence, the correct statement is
\[
\boxed{\text{Syllabus is a part of curriculum}.}
\]