Biology App collections of Categories are below and provide all this Topic Like,
Biology in English
Biology in Hindi
Biology in Gujarati
Biology in Marathi

Biology Structure and Functions
Fundamental Unit of Life
Tissues
Animal Tissue
Diversity in Living Organisms
Animalia Kingdom
Vertebrata
Transportation in Humans
Transportation in Plants
Control and Coordination
Hormones in Animal
Reproduction in Animals
Heredity and Evolution
Life Processes
Natural Resources
Our Environment
Conservation of Plants and Animals
Classification of Organisms
Cell Division
Bacteria
The Plant Stem
The Plant Leaf
The Flowers
The Fruit
Plant Diseases
Blood Group
Human Brain
Vitamins
Organisms and their Chromosome Counts
Viral Diseases
Branches of Biology
General Biology
Skeletal System
Respiratory System
Reproductive System
Nervous System
Circulatory System
Blood Vascular System
Organ System
Etc...