What percentage of pollen grains produced tubes in each solution?

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?

Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.

Which of th following is needed for cellular respiration to occur