In which plant do flowers show photonastic movement?

What are voluntary and involuntary actions? Give one example of each.

Name two specialised tissues that provide control and coordination in multicellular organisms.

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?

Why do endocrine glands release their secretions into the blood?

Which of the following endocrine glands is unpaired?