Which one of the following four glands is correctly matched with the accompanying description?
thymus - starts undergoing atrophy after puberty
thyroid - hyperactivity in young children causes cretinism
pancreas - delta cells of the islets of Langerhans secrete a hormone which stimulates glycolysis in liver
parathyroid - secretes parathormone which promotes movement of calcium ions from blood into bones during calcification
In plants, auxin synthesis occurs in
cortex
xylem cells
phloem cells
root and shoot tips
ACTH is secreted by
thyroid
adrenal
pituitary
parathyroid
The hormone responsible for ripening of fruits is
ABA
auxin
ethylene
cytokinin
Ethylene gas is used for
growth of plants
ripening of fruits
delaying fruit's abscission
stopping the leaf abscission
Where in the brain are neurosecretory cells located?
Hypothalamus
Thalamus
Medulla
None of these
Which of the following induces cell division ?
gibberellin
Genetic dwarfness can be overcome by treating it with
anti-gibberellin
The hormone which controls cell division and cell differentiation is
Gibberellin is helpful in
fat hydrolysis
protein synthesis
inducing dwarfism
elongation of plants
