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AIIMS 2007
Exam
AIIMS
Year
2007
Subject
Botany
Chapter
Reproduction in Organisms

AIIMS 2007 · Botany · Reproduction in Organisms

Which form of reproduction is correctly matched?

Which form of reproduction is correctly matched?

Options

  1. AEuglena (\rightarrow) transverse binary fission
  2. BParamecium (\rightarrow) longitudinal binary fission
  3. CAmoeba (\rightarrow) multiple fission
  4. DPlasmodium (\rightarrow) binary fission

Correct answer

C. Amoeba (\rightarrow) multiple fission

Step-by-step solution

Reproduction is an essential feature of all living organisms. It is the process by which an individual multiplies in number by producing more individuals of its own type. It maintains the continuity of race by replacing old dying members and helps in increasing the total number of individuals. Amoeba proteus does not reproduce sexually. The reproduction is essentially asexually and takes place by various methods such as binary fission, multiple fission and sporulation. Binary fission is the most common mode of reproduction. It results in the division of the parent Amoeba into two daughter amoebea. Amoeba reproduces by multiple fission during adverse environmental conditions. The animals secretes a three-layered protective, chitinous cyst around it and becomes inactive. Inside the cyst, the nucleus repeatedly divides to form several daughter nuclei, which arrange themselves near the periphery. When favourable conditions arrive, the cyst breaks off liberating the young pseudopodiospores, each with fine pseudopodia. They feed and grow rapidly to become adults and lead an independent life. Form of reproduction present in the following animals are - Euglena - Longitudinal binary fission Paramecium - Transverse binary fission Plasmodium - Multiple fission
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