In the initiation of the vertebrate eyes, paired regions of the brain bulges (optic vesicles, act as inducer) out and approach the surface ectoderm (act as responder) of the head.

TLS Online TPP Program

#Id: 9379

#Unit 11. Evolution and Behavior

Caused of behaviour

Proximate causes - The subject of cell biology, neurobiology, and many other biological disciplines

Ultimate causes - Their historical causes, especially the action of natural selection

TLS Online TPP Program

#Id: 9380

#Unit 11. Evolution and Behavior

Innate behaviour

Reflex - Allow us to move in response to something in the environment.

The reflex which causes us to close our eyes when something flashes towards us, or to withdraw a foot when we step on a sharp object.

TLS Online TPP Program

#Id: 9381

#Unit 11. Evolution and Behavior

TLS Online TPP Program

#Id: 9382

#Unit 11. Evolution and Behavior

The latency between a dog encountering a painful stimulus with its leg and showing the flexion reflex in which, it withdraws its leg usually lies between 60 and 200 ms

TLS Online TPP Program

#Id: 9383

#Unit 11. Evolution and Behavior

TLS Online TPP Program

#Id: 9384

#Unit 11. Evolution and Behavior

Taxis - movement toward or away stimuli