The answer is D, The structure was probably functional in some ancestor of the modern organism. Vestigial structures are structures that have remained from ancestors but have no function in modern times.
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<span>In the duct system the atop testis where sperm mature from is known as the epididymis</span>
En las sinapsis eléctricas la información se transmite a través de corrientes locales, mientras que en las sinapsis químicas se transmite mediante neurotransmisores. ... Las sinapsis eléctricas son simétricas, mientras que las químicas son asimétricas.
Answer:
The correct answer is option D. Light and some other factors are necessary for chlorophyll production
Explanation:
By this experiment, it is clear that light is the major factor that helps in the production of chlorophyll in seedlings or plants. In this study, placing the seeds in the light turns 75 seedlings green which is possible by the production of the green pigment, chlorophyll only. So, it is proved that light is a key factor in the production of chlorophyll.
Besides light, there must be some other factors (mineral nutrition and chemical metabolites) that also play role in the production of chlorophyll or increase or decrease of the chlorophyll production as few seedlings did not turn green in the study.
