Tag: Practice Questions on Organization in the Living World

  • CBSE 9th Biology | Organization in the Living World- Practice Questions

    Organization in the Living World- Practice Questions Fill in the Blanks 1……………………. tissues are regions where cells have lost their ability to divide. 2. Elongated cells with thickenings at corners constitute 3. Tracheids and vessels are the main elements in the xylem. 4. Lining of alveoli and blood capillaries is formed by epithelium. 5…………………….. connect…