Selina Class 7 Biology Solutions Chapter-1 Plant And Animal Tissues
Introduction to Plant And Animal Tissues
The study of tissues helps students understand how groups of cells work together to perform important functions in living organisms. Selina Class 7 Biology Solutions provide detailed explanations of plant and animal tissues in a simple and student-friendly manner. Students using Selina Solutions for ICSE board can easily prepare textbook exercises, important definitions, and conceptual questions related to tissue structure and functions. This chapter is important because it forms the foundation for advanced biology topics in higher classes.
Find the Exercise-wise PDF of Selina Class 7 Biology Solutions chapter-1 Plant And Animal Tissues.
What are Tissues?
A tissue is a group of similar cells that perform a specific function. In multicellular organisms, tissues help different body parts work efficiently. The chapter explains that plants and animals both contain tissues, but their structures and functions are different according to their needs.
Types of Plant Tissues
Plant tissues are mainly divided into two categories:
Meristematic Tissues
Meristematic tissues consist of actively dividing cells responsible for plant growth. These tissues are found at the tips of roots and shoots. They help plants increase in length and thickness.
Permanent Tissues
Permanent tissues are formed when meristematic cells stop dividing and become specialized. The chapter explains three simple permanent tissues:
- Parenchyma – Stores food and helps in photosynthesis.
- Collenchyma – Provides flexibility to plant parts.
- Sclerenchyma – Gives strength and hardness to plants.
Complex Plant Tissues
The chapter also explains complex tissues:
Xylem
Xylem transports water and minerals from roots to leaves and other plant parts.
Phloem
Phloem carries prepared food from leaves to the entire plant body.
These tissues are important because they help in the transportation of substances within plants.
Types of Animal Tissues
Animal tissues are classified into four main groups.
Epithelial Tissue
This tissue forms the protective covering of body organs and skin.
Connective Tissue
Connective tissue supports and connects body parts. Blood, bone, and cartilage are examples of connective tissues.
Muscular Tissue
Muscular tissue helps in body movement. The chapter discusses voluntary muscles, involuntary muscles, and cardiac muscles.
Nervous Tissue
Nervous tissue carries messages throughout the body and controls body activities.
Importance of Studying Tissues
This chapter helps students understand how specialized cells perform different functions in plants and animals. Students also learn important comparisons such as differences between xylem and phloem or plant tissues and animal tissues. These concepts are frequently asked in ICSE examinations.
Benefits of Selina Solutions for Chapter 1
Selina solutions help students practice textbook questions with accurate explanations. The solutions cover definitions, diagrams, short notes, and difference-based questions in a clear format. Regular revision improves conceptual understanding and answer-writing skills for examinations.