Which of the following endocrine glands is unpaired?

Trace the sequence of events through a reflex arc that occurs when a bright light is focused on your eyes.

Name the part of the neuron:
$(i)$ where information is acquired.
$(ii)$ through which information travels as an electrical impulse.

$(a)$ Name one organ each where growth hormone is synthesized in man and plant.
$(b)$ List the sequence of events that occur when a plant is exposed to unidirectional light,leading to bending of a growing shoot. Also,name the hormone and the type of movement.

Iodine is necessary for the synthesis of which hormone?

What is the movement of plant parts in response to temperature called?