Diversity and Classification | Class 9 Science Notes

Classification of Plants

This section focuses on the classification of plants into major groups based on their characteristics. Plants are broadly classified into two groups: Cryptogams and Phanerogams. Cryptogams are plants that do not have well-developed reproductive organs and reproduce by spores. They include algae, fungi, bryophytes, and pteridophytes. Phanerogams are plants with well-developed reproductive organs and reproduce by seeds. They are further divided into gymnosperms (plants with naked seeds like pine) and angiosperms (plants with seeds enclosed in fruits). Angiosperms are further classified into monocotyledons (monocots) and dicotyledons (dicots) based on the number of cotyledons (seed leaves) in their seeds. The section explains the characteristics of each group with examples and describes their importance. This classification helps in understanding the diversity and evolutionary relationships among plants.

📊 Diagram: Diagram illustrating the classification of plants into Cryptogams and Phanerogams with examples of each group.

🧪 Activity: Activity: Observing and identifying different types of plants in the school garden to classify them into Cryptogams and Phanerogams.

🔗 Connection: Prepares for the next section on classification of animals by explaining plant grouping.