Biology, 26.04.2021 21:10 nathaniel12
What does stage 4 show? A. A young female cone with fertilized eggs matures into a seed cone. B. Young male cones produce spores using meiosis. C. A spore divides and grows into a pollen grain using mitosis. D. A seed that contains an embryo plant grows into a young pine tree.
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Biology, 22.06.2019 08:30, scottbrandon653
What are some natural processes that represent physical and chemical changes?
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Biology, 22.06.2019 09:30, ceeejay0621
Juan and carol were studying invertebrates in biology. they knew that segmented or earth worms preferred a dark, moist habitat. during this lab, they would be investigating the responses of organisms called planaria or dugesia tigrina. these were simple flatworms that still had a one-way digestive system and a very simple nervous system. juan and carol placed the planaria in a petri dish containing cool, distilled water that was partially covered with black paper. they shined a light on the dish. next, they removed the paper and placed a small amount of chicken liver at one end of the dish. they added a few large salt crystals to the water. finally, they added drops of hot water to the cool water in the petri dish. their results can be seen in the data table. according to their experiment, all but one conclusion is valid.
Answers: 1
What does stage 4 show? A. A young female cone with fertilized eggs matures into a seed cone. B. You...
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