Dead xylem vessels form continuous tubes for water transport. Living leaf cells lose water through transpiration, creating transpiration pull. This pull draws water upward through xylem against gravity, maintaining continuous movement from roots to leaves in plants.
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Connective tissue holds the body together and supports different organs and tissues. It binds skin, muscles and bones, providing strength, support and attachment, ensuring body parts remain connected and properly organised during movement and daily activities.
Yes, many body movements are involuntary and occur automatically without conscious control. Examples include heartbeat, digestion and movement of food in the intestine. Smooth muscles and cardiac muscles perform these essential activities continuously throughout life.
(i) Type B sprouted because it contained nodes with intercalary meristem. (ii) Type B had buds or nodes unlike type A. (iii) Sprouting and growth were observed. (iv) Water, soil, sunlight, temperature and cutting size should remain similar.
Bone and muscle mass differ because of age, gender, nutrition, genetics and physical activity. Bones provide support and protection, while muscles help movement and posture. Together, they contribute significantly to total body weight and body strength.