The root nodules of leguminous plants houses nitrogen-fixing bacteria called Rhizobia. Rhizobia has a symbiotic relationship with leguminous plants that allows both to benefit from each other.
By binding to hydrogen, the Rhizobia bacterium is able to convert or fix nitrogen gas into ammonia , a form that the plant can use. Likewise, the legume plant provides the rhizobia bacterium with carbohydrate which the rhizobia depends on for energy. It is important to note that the carbohydrate sent to the nodules for the rhizobia is also what is used as a source of hydrogen to help the bacterium convert nitrogen to ammonia.
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Answer:
A
Explanation:
B) not all cells have a nucleus. For example, prokaryotes have no nucleus
C)Not all cells have a cell wall.(Animal cells don't)
D) not all cells have mitochondria (Prokaryotes don't)
A) all cells contain DNA, and DNA is all composed of adenine, thymine, guanine, and cytosine.
Ovaries are t he reproductive structure in female mammal that produces sex cells . In the female body ovaries primary reproductive structure that produces gametes and sex hormones.They are two ovaries in female reproductive system each located in each side of the uterus. In the ovaries there is endocrine gland which produces sex hormones
Offset sexual reproductions