DENDROLOGY

Detailed explanation-1: -The correct Answer is Imbibition pressure.

Detailed explanation-2: -Seedlings can only emerge from the soil when they push upward, exerting a force on the soil greater than the downward force of gravity. The turgor pressure inside of the plant cells must be high in order to have enough force to push up on the soil.

Detailed explanation-3: -Reason:-Imbibition creates sufficient pressure so that seedling comes out of the soil.

Detailed explanation-4: -Seed germination is the process by which an embryo develops from a seed to a seedling under favourable conditions.

Detailed explanation-5: -Environmental factors such as temperature, light, pH, and soil moisture are known to affect seed germination (Chachalis and Reddy 2000; Taylorson 1987). Burial depth of seed also affects seed germination and seedling emer-gence. Weed seedlings may emerge from the soil surface to 15 cm deep (Bello et al.