Dormancy & Dispersal

Question 1

Give examples of clonal dispersal.

Answer 1

• New saplings grow from roots e.g. bracken
• Runners (guerilla strategy) e.g. strawberries
• Plants grow in close proximity with strong intraspecific competition (phalanx strategy) e.g. bamboo.

Question 2

Define tidal and diurnal migration.

Answer 2

Tidal - Move with tide to keep in same environment.

Diurnal - Need two different habitats.

Question 3

Define predictive dormancy.

Answer 3

• Initiated by adverse weather conditions
• Predictable and seasonal.
• e.g. diapause & innate/primary dormancy.

Question 4

Define consequential dormancy.

Answer 4

• Initiated by adverse weather conditions

- Consequential.

Question 5

Define innate dormancy,

Answer 5

Condition of seeds when they leave the parent plant. Will leave dormancy when exposed to warm moist areas.

Question 6

Define enforced dormancy.

Answer 6

Occurs when a seed is deprived of any/all its germination requirements.

Question 7

Define induced dormancy.

Answer 7

Changes in environment induce changes within the seed resulting in dormancy.