THE CELL
CELL THEORY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The magnifying glass showed scientists that plants were made up of cells.
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The microscope showed that cells of plants and animals have different structures.
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The microscope enabled scientists to discover single-celled organisms.
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The telescope enabled scientists to see objects they could not view before.
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Detailed explanation-1: -The earliest classification system was developed by Aristotle in the 4th century B.C. This system classified all living things as either plants or animals. The two-kingdom system remained in place until 1866, when the Protist kingdom was created.
Detailed explanation-2: -Aristotle divided organisms into 3 categories on the basis of their habitat. These 3 categories were terrestrial, aquatic and aerial organisms. Terrestrial, aquatic and aerial organisms lived on land, water and air respectively.
Detailed explanation-3: -Taxonomy. Aristotle. Taxonomy is the branch of science that groups and names living organisms based on their relationships inferred by shared characters. Aristotle was the first scientist who attempted to classify organisms. He subdivided plants into three groups: shrubs, herbs and trees.
Detailed explanation-4: -Carl Linnaeus was the first to use systems word in his book “Systema Naturae”. Complete answer: Linnaeus was the first scientist who classified organisms into two kingdoms: Plantae and Animalia.
Detailed explanation-5: -The two major groups of animals according to his classification were based on presence or absence of “red blood.” Animals with red blood flowing in their bodies were named as Enaima (today’s vertebrates) whereas animals without any such red blood flowing in their bodies, were named as Anaima (today’s invertebrates).