Question

Paramecium reproduces by

• A. Binary fission
• B. Transverse fission
• C. Elongated fission
• D. All of the above

Answer 1

The correct option is D All of the above

Paramecium, like other ciliates, usually reproduces by splitting in two, forming two virtually identical individuals from one organism. Most ciliates divide transversely, splitting in two by pinching off in the middle of the long axis of the organism, as can be seen in the photo. The macronucleus does not divide by mitosis, rather it elongates and then splits in two, roughly one half going to the each of the new daughter cells. This type of reproduction involves no exchange of genetic material and is a type of asexual reproduction. This form of asexual reproduction is often called as fission. Thus, the correct answer is option D.