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Assertion (A): Cells were first discovered by Robert Hooke in 1665 with the help of a primitive microscope.Reason (R): The cell theory, which states that all plants and animals are composed of cells and that the cell is the basic unit of life, was presented by biologists Schleiden and Schwann in the 19th century.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertionb)If both Assertion and Reason are true but Reason is not the correct explanation of Assertionc)If Assertion is true but Reason is falsed)If both Assertion and Reason are falseCorrect answer is option 'B'. Can you explain this answer? for Grade 9 2025 is part of Grade 9 preparation. The Question and answers have been prepared according to the Grade 9 exam syllabus. Information about Assertion (A): Cells were first discovered by Robert Hooke in 1665 with the help of a primitive microscope.Reason (R): The cell theory, which states that all plants and animals are composed of cells and that the cell is the basic unit of life, was presented by biologists Schleiden and Schwann in the 19th century.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertionb)If both Assertion and Reason are true but Reason is not the correct explanation of Assertionc)If Assertion is true but Reason is falsed)If both Assertion and Reason are falseCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Grade 9 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion (A): Cells were first discovered by Robert Hooke in 1665 with the help of a primitive microscope.Reason (R): The cell theory, which states that all plants and animals are composed of cells and that the cell is the basic unit of life, was presented by biologists Schleiden and Schwann in the 19th century.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertionb)If both Assertion and Reason are true but Reason is not the correct explanation of Assertionc)If Assertion is true but Reason is falsed)If both Assertion and Reason are falseCorrect answer is option 'B'. Can you explain this answer?.

Solutions for Assertion (A): Cells were first discovered by Robert Hooke in 1665 with the help of a primitive microscope.Reason (R): The cell theory, which states that all plants and animals are composed of cells and that the cell is the basic unit of life, was presented by biologists Schleiden and Schwann in the 19th century.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertionb)If both Assertion and Reason are true but Reason is not the correct explanation of Assertionc)If Assertion is true but Reason is falsed)If both Assertion and Reason are falseCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Grade 9. Download more important topics, notes, lectures and mock test series for Grade 9 Exam by signing up for free.

Here you can find the meaning of Assertion (A): Cells were first discovered by Robert Hooke in 1665 with the help of a primitive microscope.Reason (R): The cell theory, which states that all plants and animals are composed of cells and that the cell is the basic unit of life, was presented by biologists Schleiden and Schwann in the 19th century.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertionb)If both Assertion and Reason are true but Reason is not the correct explanation of Assertionc)If Assertion is true but Reason is falsed)If both Assertion and Reason are falseCorrect answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Assertion (A): Cells were first discovered by Robert Hooke in 1665 with the help of a primitive microscope.Reason (R): The cell theory, which states that all plants and animals are composed of cells and that the cell is the basic unit of life, was presented by biologists Schleiden and Schwann in the 19th century.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertionb)If both Assertion and Reason are true but Reason is not the correct explanation of Assertionc)If Assertion is true but Reason is falsed)If both Assertion and Reason are falseCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for Assertion (A): Cells were first discovered by Robert Hooke in 1665 with the help of a primitive microscope.Reason (R): The cell theory, which states that all plants and animals are composed of cells and that the cell is the basic unit of life, was presented by biologists Schleiden and Schwann in the 19th century.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertionb)If both Assertion and Reason are true but Reason is not the correct explanation of Assertionc)If Assertion is true but Reason is falsed)If both Assertion and Reason are falseCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of Assertion (A): Cells were first discovered by Robert Hooke in 1665 with the help of a primitive microscope.Reason (R): The cell theory, which states that all plants and animals are composed of cells and that the cell is the basic unit of life, was presented by biologists Schleiden and Schwann in the 19th century.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertionb)If both Assertion and Reason are true but Reason is not the correct explanation of Assertionc)If Assertion is true but Reason is falsed)If both Assertion and Reason are falseCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Assertion (A): Cells were first discovered by Robert Hooke in 1665 with the help of a primitive microscope.Reason (R): The cell theory, which states that all plants and animals are composed of cells and that the cell is the basic unit of life, was presented by biologists Schleiden and Schwann in the 19th century.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertionb)If both Assertion and Reason are true but Reason is not the correct explanation of Assertionc)If Assertion is true but Reason is falsed)If both Assertion and Reason are falseCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice Grade 9 tests.