Answer:
Seeds are the result of plant reproduction. ... When pollen lands on the flower's stigma, it germinates and forms a pollen tube, which then quickly grows towards the plant's ovary. Once it finds an ovule, the pollen tube bursts to release sperm cells, which fertilize the ovule and initiate seed formation.
Explanation:
The highest level<span> of </span>organization<span> for living things is the biosphere; it encompasses all other </span>levels<span>. The biological </span>levels<span> of </span>organization<span> of living things arranged from the simplest to </span>most complex<span> are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.</span>
