Answer:
The correct answer will be- the bark of an oak tree by Antonie Van Leeuwenhoek
Explanation:
The development of light microscopy began before the 18th century where a scientist named Antonie Van Leeuwenhoek observed the first living cells of the organisms.
Although the first cell was observed by the Robert Hooke when he observed the dead cells of the bark of a tree bu the light microscope designed by the Leeuwenhoek helped him to observe the living cells from the pond life and he also observed the bark of an oak tree.
Thus, the bark of an oak tree by Antonie Van Leeuwenhoek is considered the first cell.
The organisms that gathers it's energy directly from the sun whole be the producers(plants).
In the ecosystem, the producers are those organisms that are capable of generating their own food through thermal energy they trapped from sunlight.
A typical example of the producers in the ecosystem are the green plants.
Green plants make their food by taking sunlight and using the energy to make sugar in a process called photosynthesis.
Learn more about photosynthesis here:
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