An organism has syncytial nuclei, which leads to parasynchronous or synchronous mitosis and therefore, multiple nuclei undergo the process of mitosis at the same time. This happens to the nuceli present in one cytoplasm, i.e., one cell.
Symbiotic Relationships :
A long term relationship between two biotic factors, where at least one benefits
Mutualism= symbiotic relationship where both organisms benefit (+,+) o Example- rhino & woodpecker (rhino gets rid of parasites and bird gets food)
Parasitism = symbiotic relationship where one benefits and the other is harmed, but not typically to the point of death (+,-) o Example- tapeworm in an animal, tick or flea on a dog (parasite benefits at the expense of the host)
Commensalism = symbiotic relationship where one benefits and the other is neither helped nor harmed (+, 0) o Example- barnacles on a scallop (barnacles get a habitat/place to attach while the scallop is not hurt or helped by their presence).
Symbiotic Relationships:
In symbiosis, two or more species live together in a close, long term association. Symbiotic relationships can be beneficial to both organisms or may benefit one organism and leave the other harmed or unaffected. Parasitism is one type of symbiotic relationship that is detrimental to, or harms, the host organism. In this relationship, one organism feeds on and usually lives in another, typically larger, organism. Mutualism is a symbiotic relationship in which both participating species benefit. A well known instance of mutualism involves ants and aphids. The ants feed on fluid the aphids secrete, and in exchange, the ants protect the aphids from insect predators. A third from of symbiosis is commensalism, a symbiotic relationship in which one species benefits and the other is neither harmed nor helped. Among the best-known examples of commensalism are the feeding and protection relationships between certain small tropical fishes and sea anemones, marine animals that have stinging tentacles.
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The statement that is true regarding the reactions that occur in the Calvin cycle is that it consumes energy.
<h3>What is Calvin cycle?</h3>
Calvin cycle of photosynthesis is a series of biochemical reactions that take place in the stroma of chloroplasts in photosynthetic organisms.
The Calvin cycle also called light independent or dark reaction is the second stage of the photosynthetic process. It is so called because it does not require light to occur.
The Calvin cycle makes use of the products of the light stage (ATP and NADPH) to synthesize carbohydrates.
However, the series of reaction is an energy consuming one, which makes use of ATP to occur.
Therefore, the statement that is true regarding the reactions that occur in the Calvin cycle is that it consumes energy.
Learn more about Calvin cycle at: brainly.com/question/3199721
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Answer:
Early cyanobacteria in stromatolites are thought to be responsible for increasing the amount of oxygen in the primeval Earth's atmosphere through their continuing photosynthesis. They were the first known organisms to photosynthesize and produce free oxygen.
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