Question

1. Planaria usually reproduces by: *
(a) fragmentation and budding
O (b) regeneration and budding
O (c) multiple fission and fragmentation
O
(d) regeneration​

Answer 1

Fragmentation is a sexual mode of reproduction in which an organism is split into fragments. Each of these fragments develops into mature, fully grown individuals that are clones of the original organism. The fungi, the filamentous algae and the protonema of mosses all easily multiply by fragmentation.

When it comes to unicellular organisms reproduction is synonymous with the increase in the number of cells.

So the correct option is 'c and d are correct'.