Which one does NOT belong?

Exercise and reference answers

Questions

1. Items

   1. Binary fission
   2. Budding
   3. Fragmentation
   4. Fertilisation

   Reason

   Fertilisation needs two germ-cells, so it is sexual. The other three are asexual methods.

   Odd item

   Fertilisation

2. Items

   1. Placenta
   2. Amoeba
   3. Plasmodium
   4. Hydra

   Reason

   The placenta is a tissue that feeds a developing embryo, not an organism.

   Odd item

   Placenta

3. Items

   1. Layering
   2. Spore formation
   3. Grafting
   4. Cutting

   Reason

   Spore formation is not a vegetative propagation technique used by growers; layering, grafting and cutting are.

   Odd item

   Spore formation

Instructions

Tap the item that does not belong with the rest.

Explanation