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DSSSB TGT C9celldiscovery — practice questions

Explore 6 free C9celldiscovery questions in DSSSB TGT Biology. Open each question or exercise to read its content, reference answers and available explanation.

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C9celldiscovery questions and exercises with answers

Showing questions 1–6 of 6.

As per your syllabus, what is the LIMIT OF RESOLUTION of the human eye — the closest distance at which two points appear distinct?Read the answer and worked solution →As per your syllabus, in 1838 which German BOTANIST reported that all PLANTS are made up of cells — a foundational claim of cell theory?Read the answer and worked solution →As per your syllabus, in 1839 which German ZOOLOGIST found that all ANIMALS are also made up of cells — extending cell theory to animals?Read the answer and worked solution →As per your syllabus, in 1855 which scientist added the third tenet of cell theory — that NEW CELLS ARISE ONLY FROM PRE-EXISTING CELLS?Read the answer and worked solution →Match the cell organelle to its functionRead the answer and worked solution →Spot the organelle that is NOT in animal cellsRead the answer and worked solution →

Worked practice questions

As per your syllabus, what is the LIMIT OF RESOLUTION of the human eye — the closest distance at which two points appear distinct?

  1. Less than 1 nanometre
  2. About 1 cm
  3. About 10 µm
  4. About 0.1 mm at the near point of 25 cm
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Correct answer: D. About 0.1 mm at the near point of 25 cm

As per your syllabus, the human eye's resolution limit is ~0.1 mm at the near point (25 cm). Cells are smaller, so microscopes are needed.

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As per your syllabus, in 1838 which German BOTANIST reported that all PLANTS are made up of cells — a foundational claim of cell theory?

  1. Matthias Schleiden
  2. Rudolf Virchow
  3. Robert Hooke
  4. Theodor Schwann
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Correct answer: A. Matthias Schleiden

As per your syllabus, Schleiden (1838) established the plant-cell claim. Schwann did animals; Virchow did 'all cells from cells' Hooke first saw cells.

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As per your syllabus, in 1839 which German ZOOLOGIST found that all ANIMALS are also made up of cells — extending cell theory to animals?

  1. Rudolf Virchow
  2. Camillo Golgi
  3. Matthias Schleiden
  4. Theodor Schwann
Show answer and solution

Correct answer: D. Theodor Schwann

As per your syllabus, Schwann (1839) is the animal-cell claim. Schleiden did plants Virchow did 'all cells from cells' Golgi described the Golgi apparatus.

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More Biology topics

Life ProcessesScienceControl and CoordinationHeredityCellHeredity and EvolutionCell And Its OrganisationC9organelles