Answer;
Seedless plant.
The fossil of a plant reveals that it produced spores that were used for reproduction. It was a seedless plant.
Explanation;
-Seedless vascular plants are plants such as fern and horsetails, liverworts, mosses; which contain vascular tissues, but do not produce flowers or seed.
-These plants reproduce using haploid , unicellular spores instead of seeds.
-These plants have life cycles with two distinct stages; one in which spores are produced and one in which sex cells are produced.
Answer:
See the answer below
Explanation:
In science, research questions are generally derived from the observation of phenomena. Also, hypotheses that represent general statements that have not been tested are formulated in such a way that they can be falsified. Hence, for each of the observations in the illustration, the question and their respective hypothesis would be as follows:
1. Observation: a teenager observed that he had three new pimples the night after eating a chocolate bar.
Question: Do chocolate bars cause pimples in teenagers?
Hypothesis: If teenagers eat chocolate bars, they might get pimples.
2. See the attached image
3. Observation: A little boy observed the leaves on trees changed colors when the temperature was lower.
Question: Do lower temperatures cause tree leaves to change color?
Hypothesis: If the ambient temperatures of trees are lowered, their leaves might change color.
1.<span>is usually multicellular
2.</span><span>contains a nucleus
4.</span><span>contains membrane-bound organelles
3 does not get selected, it is incorrect. </span>
Answer:
commensalism mutualism,parasitism
Answer:
Hox gene complex is the set of genes responsible for maintaining the basic body plan of an organism. Synpolydactyly syndrome was the first disorder discovered in human beings that resulted from the mutation in the Hox gene complex. As a result of mutations in the Hox gene complex, syndactyly is inherited, which results in the fusion of fourth and fifth toes and third and fourth fingers.
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