Both crossing over and point mutation

Crossing over

Point mutations

Neither crossing over nor point mutation

There is no such thing as a plant organ; organs are only found in animals.

A group of tissues that work together to perform a specific function

A group of systems that work together to perform a specific function

A group of cells that work together to perform a specific function

control

umbrella

keystone

invasive

Formation of life from nonliving materials

Formation of self-replicating molecules

Formation of life from other sources of life

Formation of polymers from organic monomers