Consider the following two statements:I. In the single-celled organisms, we are not very clear about the usage of the two terms – growth and reproduction.II. When it comes to unicellular organisms like bacteria, unicellular algae or amoeba, reproduction is synonymous with growth, i.e., increase in number of cells.1. Both I and II are true and II explains I2. Both I and II are true but II does not explain I3. I is true but II is false4. Both I and II are falseIn single-celled organisms, growth and reproduction are often used interchangeably, and the increase in the number of cells is a direct result of reproduction.
Question
Consider the following two statements:I. In the single-celled organisms, we are not very clear about the usage of the two terms – growth and reproduction.II. When it comes to unicellular organisms like bacteria, unicellular algae or amoeba, reproduction is synonymous with growth, i.e., increase in number of cells.1. Both I and II are true and II explains I2. Both I and II are true but II does not explain I3. I is true but II is false4. Both I and II are falseIn single-celled organisms, growth and reproduction are often used interchangeably, and the increase in the number of cells is a direct result of reproduction.
Solution
The correct answer is option 1. Both statements I and II are true and statement II explains statement I. In single-celled organisms, the terms growth and reproduction are often used interchangeably because the increase in the number of cells (which is typically considered growth in multicellular organisms) is actually a result of the reproduction process. Therefore, in these cases, reproduction is synonymous with growth.
Similar Questions
(A) Unicellular organisms are capable of independent existence(B) Cell is the fundamental structural and functional unit of all unicellular organisms(C) All cells arise from pre-existing cells(D) The cytoplasm is the main arena of cellular activities in all type of cellsOption :-Statement A,C and D are wrongStatement A, B and D are not correctStatement A, B and C are not wrongStatement B, C and D are not correct
Unicellular organisms grow by cell division.
In majority of higher animals and plants,growth and reproduction are mutually exclusive events
All living organisms grow. Increase in mass and increase in numberof individuals are twin characteristics of growth. A multicellular organismTHE LIVING WORLDCHAPTER 11.1 What is ‘Living’?1.2 Diversity in theLiving World1.3 TaxonomicCategories1.4 TaxonomicalAids2019-20204 BIOLOGYgrows by cell division. In plants, this growth by cell division occurscontinuously throughout their life span. In animals, this growth is seenonly up to a certain age. However, cell division occurs in certain tissues toreplace lost cells.
Differentiate between unicellular and multicellular organisms. (three points)
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