EASY
11th West Bengal Board
IMPORTANT
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Local hormones that act on neighbouring cells are called autocrine, and those that act on the same cell that secreted them are called paracrine.

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Important Questions on Chemical Co-ordination and Regulation

EASY
11th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 11>Chapter 20 - Chemical Co-ordination and Regulation>EXERCISE>Q 8
Nitric oxide is both a lipid-soluble hormone and neurotransmitter. 
EASY
11th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 11>Chapter 20 - Chemical Co-ordination and Regulation>EXERCISE>Q 9
Examples of catecholamine are epinephrine, norepinephrine and dopamine secreted from the inner lining of the adrenal cortex. 
EASY
11th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 11>Chapter 20 - Chemical Co-ordination and Regulation>EXERCISE>Q 10
Most water-soluble hormone molecules circulate in the watery blood plasma in a 'free' form (not attached to other molecules).
EASY
11th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 11>Chapter 20 - Chemical Co-ordination and Regulation>EXERCISE>Q 11
All tropic hormones are secreted from the adenohypophysis. 
EASY
11th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 11>Chapter 20 - Chemical Co-ordination and Regulation>EXERCISE>Q 12
Follicle-stimulating hormone and luteinizing hormone secreted from the anterior pituitary are generally known as gonadal hormones. 
EASY
11th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 11>Chapter 20 - Chemical Co-ordination and Regulation>EXERCISE>Q 13
The neurohormones vasopressin and oxytocin are known as a posterior pituitary hormone because these are synthesised and secreted from the pars nervosa of the posterior pituitary. 
EASY
11th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 11>Chapter 20 - Chemical Co-ordination and Regulation>EXERCISE>Q 14
Vasopressin and ADH hormone are the same hormones that help in the reabsorption of water from the collecting tubules of the kidney. 
EASY
11th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 11>Chapter 20 - Chemical Co-ordination and Regulation>EXERCISE>Q 15
Thyroxin is a less potent hormone than triiodothyronine which are commonly known as calorigenic hormones.