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Question

are planaria multicellular or unicellular ? is their reproduction synonymous with their growth ?

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Solution

In Planaria reproduction is of two types – sexual and asexual. Sexually they are hermaphrodites which mean both male and female sexes are present in same organism. Asexually they can reproduce by the process of regeneration in which if a single body part gets detached due to some reasons, they can grow into a new organism from that detached portion.

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How reproduction is synonymous with growth?

Q. Reproduction is synonymous with growth in:

Q. Consider the following statements with respect to reproduction in the lower living organisms
(a) Organisms like yeast and Planaria reproduce asexually by means of budding
(b) True regeneration is observed in Hydra
(c) Protonema of mosses multiply by fragmentation
(d) In unicellular organisms like bacteria, algae, and Amoeba, reproduction is synonymous with growth, i.e., an increase in the number of cells.

Q. In unicellular organisms, with respect to growth and reproduction the following can be true.
1. Growth and reproduction are inclusive events.
2. Unicellular organisms grow by cell division.
3. Growth and reproduction are exclusive events.

In which among the following, reproduction is synonymous with growth?

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