The rank directly below 'Kingdom' in the biological classification system is 'Phylum', which is often referred to as 'Division' in the context of plants.

Phloem is responsible for the transport of sugars and other metabolic products downward from the leaves.

Phloem is responsible for the transport of photosynthates, primarily sugars produced during photosynthesis, from leaves to other parts of the plant.

Sexual reproduction in plants involves the fusion of male and female gametes, leading to the formation of seeds.

Flowers in the Asteraceae family typically exhibit radial symmetry.

The classification level that comes directly after 'Kingdom' is 'Phylum'.

Gymnosperms are seed-producing plants that do not form flowers or fruits, unlike angiosperms.

Gymnosperms are a group of seed-producing plants that include conifers.

Angiosperms are characterized by the presence of flowers and fruits, which aid in reproduction.

Monocots are characterized by having one seed leaf (cotyledon) and typically exhibit parallel venation in their leaves.

Plantae are primarily autotrophic, meaning they produce their own food through photosynthesis.

Gibberellins are known to promote cell elongation and are important for growth.

Stomata are small openings on the surfaces of leaves that allow for gas exchange, including the intake of carbon dioxide and the release of oxygen.