Ivan pavlov's dog experiment suggested that

ethologists were correct
comparative behaviorists were correct
both ethologists and comparative behaviorists were correct

Both ethologists and comparative behaviourists were correct

Explanation:

Comparative behaviour is studied in different animals and it is also compared to humans. It done to know the similarity of behaviour among the animal. Pavlov's classical conditioning is a good example to know about the comparative behaviour of animals. He said that there are two reflexes need for survival of animals such as simple reflex and conditioned reflexes. The simple reflex is inborn whereas the conditioned reflex is learned. The flee of deer at the sight of a tiger is an example of conditioned reflex.

1)

i))the process of preparing food by green plants in the presence of sunlight is called photosynthesis.

ii) leaf is the site for photosynthesis.

iii) it takes place as,

6h2o+6co2=c6h12o6+602