Plant Differentiation and Development

The video tutorial explains how cells differentiate into various tissue types in plants, originating from apical meristems. It covers the formation of dermal, ground, and vascular tissues, highlighting the roles of guard cells, trichomes, and vessel elements. The process of dedifferentiation and redifferentiation is discussed, with examples like cork cambium. The tutorial also explores plant development, emphasizing intrinsic and extrinsic factors, and the concept of plasticity, where plants adapt to environmental changes.

What is the primary role of guard cells in plants?

• To provide structural support

• To facilitate gas exchange

• To store nutrients

• To transport water

Which type of ground tissue cell is characterized by thickened cell walls at the corners?

• Parenchyma

• Collenchyma

• Trichomes

• Sclerenchyma

What happens to vessel elements during vascular tissue differentiation?

• They lose their protoplasm

• They become part of the dermal tissue

• They develop chloroplasts

• They form new roots

What is dedifferentiation in plants?

• The process of forming new leaves

• The regaining of the ability to divide

• The formation of flowers

• The loss of the ability to divide

Which tissue is formed by the cork cambium through redifferentiation?

• Leaves

• Roots

• Bark

• Flowers

What are intrinsic factors in plant development?

• Light and temperature

• Genetic and growth regulators

• Water and oxygen

• Soil and nutrients

What is the term for the ability of plants to change their phenotype in response to environmental changes?

• Senescence

• Dedifferentiation

• Differentiation

• Plasticity