Answer:
1. 1a White tuft of dandelion seeds
3b cannot move about freely
Step-by-step explanation:
The White tuft of dandelion seeds refers to the feathery filaments and seeds. It is carried along with moving air away from the parent plant. The wind carries the seeds of dandelion to other places. Once the seeds find suitable substratum and growth conditions, they germinate and form a new plant.
Since plants can not move from one place to another in search of better growth conditions and substratum, they depend on air, water, other animals, etc. for dispersal of their seeds.