(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.
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These actions are controlled by nervous tissue. Neurons quickly transmit signals to the brain and muscles, enabling rapid responses like withdrawing from heat. Nervous tissue also stores and processes information, helping memory and learning functions effectively.
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.
The correct option is (iii). Meristematic cells have thin walls, dense cytoplasm and a large prominent nucleus. These features support rapid cell division, active metabolism and continuous growth, allowing plants to increase in length, girth and regeneration.
The correct option is (iii). Epithelial tissues are thin to allow rapid exchange of gases, nutrients and wastes across them. Their thin structure supports efficient absorption, secretion and diffusion in organs like lungs, intestines and blood vessels.