Biology
Mention if the following statements are true (T) or false (F). If false, rewrite the correct word (not words) striking out the single wrong one.
(i) Pituitary is of the size of a lemon.
(ii) Pituitary has three lobes — anterior, posterior and intermediate.
(iii) Oversecretion of growth hormone in adult causes gigantism.
(iv) Vasopressin secreted by anterior lobe controls reabsorption of water form kidney tubules.
Answer
(i) False
Corrected Statement — Pituitary is of the size of a pea.
(ii) True
(iii) False
Corrected Statement — Oversecretion of growth hormone in an adult causes acromegaly.
(iv) False
Corrected Statement — Vasopressin secreted by posterior lobe controls reabsorption of water form kidney tubules.
Related Questions
List any two effects of adrenaline.
Fill in the blanks with the correct alternative :
(i) Thyroid is located close to …………… (larynx/kidney).
(ii) Cretinism is caused due to …………… of thyroxin. (undersecretion/oversecretion)
(iii) Over-secretion of thyroxin causes …………… goitre. (simple/exophthalmic)
(iv) The condition showing swelling in face and hands and sluggishness due to hypothyroidism is called …………… (cretinism/myxoedema).
(v) The hormone concerned with facing dangers is …………… (thyroxine/cortisone/adrenaline).
(vi) Cortex and medulla are the two regions of …………… (thyroid/adrenal).
(vii) One of the effects of increased secretion of adrenaline is …………… . (Dry mouth / slowing of heart beat / arterioles of the digestive system dilate)
Write the full forms of:
(i) TSH
(ii) LH
(iii) ACTH
(iv) ADH
What causes the following?
(i) Acromegaly
(ii) Diabetes insipidus