Why do endocrine glands release their secretions into the blood?

Electrical impulse travels in a neuron from

Match the terms of Column $(A)$ with those of Column $(B)$.

< strong>Column $(A)$	< strong>Column $(B)$
$(a)$ Olfactory receptors	$(i)$ Tongue
$(b)$ Thermoreceptors (temperature receptors)	$(ii)$ Eye
$(c)$ Gustatoreceptors	$(iii)$ Nose
$(d)$ Photoreceptors	$(iv)$ Skin

Answer the following:
$(i)$ Name the endocrine gland associated with the brain.
$(ii)$ Which gland secretes digestive enzymes as well as hormones?
$(iii)$ Name the endocrine gland associated with the kidneys.
$(iv)$ Which endocrine gland is present in males but not in females?
$(v)$ Which hormone is responsible for changes in females during puberty?
$(vi)$ Iodine is necessary for the synthesis of which hormone?

$(a)$ Identify the phytohormone used by plants while performing the following functions:
$(i)$ Cell division in shoot tip.
$(ii)$ Inhibiting growth on approach of unfavourable conditions.
$(b)$ List in tabular form two differences between the movement in 'touch me not' plant and movement of shoot towards light.

Which lobe of the cerebrum contains the centers for voluntary muscle movement?