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Alex
2 years ago
15

Which of the following organisms have existed on Earth for the longest period of time?

Biology
2 answers:
balandron [24]2 years ago
6 0

Answer:

single-celled organisms

Explanation:

Ira Lisetskai [31]2 years ago
4 0

Answer:

cyanobacteria.. single celled organisms

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The following statements refer to a comparison of reproduction in ferns vs. flowering plants. Indicate whether each statement is
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Explanation:

Yes, both ferns and flowering plants produce spores in their life cycles. In fern plant, it produce spores on the underside of the leaves whereas in flowering plant, there are two types of spores such as microspores and megaspores. Both ferns and flowering plants have gametophyte as part of their life cycle. Flowering plants produce pollen grains whereas non-flowering plants produce spores to continue their generation. Both tree and large fern plants having diploid sporophytes which is a necessary part of their life cycle.

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