Gibberellins cause:

(a)

Shortening of genetically tall plants

(b)

Elongation of dwarf plants

(c)

Promotion of rooting

(d)

Yellowing of young leaves

Which organ acts as both exocrine gland as well as endocrine gland

(a)

Pancreas

(b)

Kidney

(c)

Liver

(d)

Lungs

_______ causes cell elongation, apical dominance and prevents abscission.

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Auxin

___________ is a gaseous hormone involved in abscission of organs and acceleration of fruit ripening.

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Ethylene

The hormone which has negative effect on apical dominance is _________.

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cytokinins

In the islets of Langerhans, beta cells secrete ________

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insulin

Decreased secretion of thyroid hormones in the children leads to _________

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cretinism

Thyroxine

(1)

Diabetes mellitus

Insulin

(2)

Simple goitre

Parathormone

(3)

Tetany

Growth hormone

(4)

Diabetes insipidus

ADH

(5)

Acromegaly

Write the name of a synthetic auxin.

What is the hormone responsible for the secretion of milk in female after child birth?

Name the endocrine glands associated with kidneys.

What is bolting? How can it be induced artificially?

Write the differences between endocrine and exocrine gland.

What is the role of parathormone?