16.1.2 Organisation of Plant Tissues (T/F)

Meristematic tissues are composed of mature cells that have stopped dividing.

Apical meristems are responsible for primary growth, which increases the length of the plant.

Lateral meristems contribute to secondary growth, which increases the girth of the plant.

Xylem is responsible for transporting food produced by photosynthesis throughout the plant.

Phloem consists of sieve tubes and companion cells that are alive at maturity.

The epidermis forms the outer protective layer of the plant and is usually covered by a cuticle to reduce water loss.

Parenchyma cells have thickened walls and provide structural support to plants.

Sclerenchyma cells have thickened cell walls due to lignin and provide mechanical support.

Root hairs are extensions of vascular tissue and help in water transport.

Primary growth occurs at lateral meristems, leading to an increase in plant thickness.

Plants undergo secondary growth to increase in length.

Vascular cambium is a type of lateral meristem involved in producing secondary xylem and phloem.

The zone of elongation in roots is where new cells actively divide through mitosis.

Annual plants complete their life cycle in one growing season.

Biennial plants complete their life cycle in one year.

The sigmoid growth curve consists of three phases: lag, log, and stationary.

Water is not an essential factor for plant growth.

Perennial plants have a life cycle of two years.

Sound waves have no effect on plant growth.

Collenchyma cells provide flexible support to the plant due to their thickened walls.