Minutes 2: Mechanisms of fruit and seed dispersal
flowering is over, and the seeds are mature the whole ovary or the
dual seeds, fall from the parent plant to the ground, where in conditions
suitable germination will take place
many plants, fruits and seeds are adapted in such a way that they are
stributed away from the parent plant, this helps to reduce overcrowding
mong plants and competition for sunlight, air, water and mineral salts: and
esults in the colonization of new areas.
The dispersal of fruits and seeds can be done by wind, water animals or self-
dispersal
The table below lists several types of fruits and seeds. Complete the table by
filling in the dispersal mechanism of each specimen as mentioned in the
extract above and state a reason for each
Reason
Dispersal
mechanism
2.
Structure
Specimen
Dandelion
Dispersal mechanism and reason
​

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.

c. is the correct answer

the two answers are a, the population of birds with large beaks will increase on the island, and c, the trait for large beaks will be passed on to future generations through natural selection. the reason for that is because if the birds that have beaks developed for eating small seeds lose all of their food, they will go hungry and eventually starve because they physically cannot eat the large seeds, therefore making the population of large beaked birds higher. also, if the trait of large beaks are dominant on the island over small beaks, then over time the large beaked birds will reproduce more and more, while the smaller beaked birds will reproduce less and less because they can't survive with the food provided. that leads to the trait of small beaks disappearing and the trait of large beaks taking over the island.