Answer:
Physical property is defined as the property of a substance which can be measured without changing its chemical identity. Physical properties are observable properties of a substance. In other words, physical properties can be measured by watching, listening, feel, touch or smell.
Some examples of physical property are: Hard, soft, color, odor, and luster etcetera.
Answer:
External plant structures such as leaves, stems, roots, flowers, fruits and seeds
Pansy —> slug —> Thrush
Seaweed—> periwinkle—> seagul
Oak leaf—> caterpillar—> robin
Grass—> cow—> human
B.cell wall
Cellulose is an important structural component of the primary cell wall of green plants.