What did astronomers discover about other galaxies in the early 20th century

Some plants rely on the wind to reproduce an example is it’s important for plants to use the forces of nature to reproduce because 1. 1a white tuft of dandelion seeds 2a spiked burrs surrounding seeds 3a hard shell on a walnut? 2. 1b require pollination to reproduce 2b reproduce only asexually 3b cannot move about freely?

The transport tubes from food came down the plant are called?

Drag each label to the correct location on the chart. match the function to the type of tissue