Dear Student,
There are no such sub fields in Bsc. Psychology. If you want to know the course curriculum it covers it is as following :-
B.SC. IN PSYCHOLOGY: SYLLABUS AND COURSE DESCRIPTION

A Year-wise breakup of the courses syllabus is  here.

Semester 1

Semester 2

Introduction to PsychologyLearningMotivationsCognitionEmotionsMemoryStress and Well-BeingEndocrine SystemState of ConsciousnessFunctioning of Nervous System

Semester 3

Semester 4

HypothesisProblems of ageingProblem and VariablesCognitive DevelopmentQualitative AnalysisEmotional and Social DevelopmentQuantitative AnalysisCulture and Human DevelopmentThe Normal CurveHuman development in Indian Context

Semester 5

Semester 6

Attitudes andDemographyPersonalityEnvironmental AssessmentCultural PsychologyEnvironmental wisdomInter group conflictEcology and DevelopmentGroup and LeadershipPsychological tests

Hope this might help you.