HORTICULTURE

Detailed explanation-1: -Unlike tissue and organ differentiation, cell differentiation occurs also in the most simply constructed multicellular lower plants.

Detailed explanation-2: -They differentiate into three main tissue types: dermal, vascular, and ground tissue. Each plant organ (roots, stems, leaves) contains all three tissue types: Dermal tissue covers and protects the plant, and controls gas exchange and water absorption (in roots).

Detailed explanation-3: -Cell wall is the characteristic feature of plant cells and not animal cells . This additional layer surrounding the cell membrane is required by plants for protection. Plant cells need protection against variations in temperature, high wind speed etc. They are exposed to these variations because they cannot move.

Detailed explanation-4: -Answer and Explanation: The statement that is incorrect is a) Only animal cells have mitochondria. Plant cells have mitochondria as well. The other three statements are true: only plant cells have cell walls, both animal and plant cells have cytoplasm, and only plant cells have chloroplasts.