Read the statements given below and fill up the blanks with the correct words listed in the box. deep, ductless, nutrients, thyroxine (a) The meal that includes all __________ is a balanced diet. (b) Insufficient production of __________ in the tadpoles leads to their incomplete development. (c) Endocrine glands are also called __________ glands. (d) After attaining puberty boys develop a__________ voice.

Question

Philoid · Accepted Answer

(a) nutrients

A balanced diet is one which contains all essential nutrients that is required for proper growth and development of our body as well as that keeps ourselves disease free and healthy.

(b) thyroxine

Thyroxine secreted from thyroid gland helps in metamorphosis process in tadpoles. Tadpoles get converted into adult frogs by metamorphosis process which is regulated by hormone thyroxine so insufficient secretion of this hormone may leads to incomplete development.

(c) Ductless

Endocrine glands do not have ducts and pour their secretions directly into the bloodstream so they are called as ductless glands. Through blood, these hormones are carried towards the target sites.

(d) Deep

During puberty, the voice box gets enlarged and protruded out in throat region which is known as Adam’s apple. So the voice of boys becomes deep and hoarse.