OBJECTIVE LIFE SCIENCE
CELL BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Both plant and animal cells differentiate at an early stage.
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Animal cells differentiate early, whilst many plant cells can differentiate throughout life.
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Plant cells differentiate early, many animal cells can differentiate throughout life.
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The majority of both plant and animals cells can differentiate later in life.
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Detailed explanation-1: -Plant cells retain their ability to differentiate (specialise) throughout their life, whereas Animal cells are mainly restricted to repair and replacement in later life.
Detailed explanation-2: -A prominent difference between a plant and an animal cell is the presence of a cell wall and chloroplasts. Plant cells have chloroplasts and the cell membrane has an outer covering called cell wall. Animal cells lack both chloroplasts and cell walls.
Detailed explanation-3: -The cell wall is present in plant cells and absent in animal cells. Hence statement 1 is correct.
Detailed explanation-4: -A plant cell contains a cell wall, cell membrane, nucleus, plastid, central vacuole, Golgi apparatus, ribosome, mitochondria, lysosome, etc. An animal cell does not have a cell wall and plastids. Thus, the correct answer is option C. i.e Animal cell lacks a cell wall.