Check MCQ Questions for Class 11 Biology Chapter 22 Chemical Coordination and Integration with Answers from CBSE section on e akhabaar
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Chemical Coordination and Integration Class 11 MCQs Questions with Answers
Question 1.
Philips collip discovered which of the following hormones:
(a) Parathyroid hormone
(b) Thyroxine
(c) A.D.H.
(d) Oxytocin
Answer
Answer: (a) Parathyroid hormone
Question 2.
Goitre is a pathological condition associated with:
(a) Glucagon
(b) Thyroxine
(c) Progesterone
(d) Testosterone
Answer
Answer: (b) Thyroxine
Question 3.
The other name of internal ear is:
(a) Utriculus
(b) Membranous labyrinth
(c) Sacculus
(d) Ductus endolymphaticus
Answer
Answer: (b) Membranous labyrinth
Question 4.
Who is known as the ‘father of endocrinology’?
(a) Thomas Addison
(b) Pasteur
(c) R. H. Whittaker
(d) Einthoven
Answer
Answer: (a) Thomas Addison
Question 5.
Which of the following is stirrup shaped ear ossicle
(a) Incus
(b) Stapes
(c) Malleus
(d) Humerus
Answer
Answer: (b) Stapes
Question 6.
By the stimulation of which structure of human ear, the sound waves are perceived by brain :-
(a) Basilar membrane
(b) Tectorial membrane
(c) Meissner’s membrane
(d) Sensory hair cells of organ of corti
Answer
Answer: (d) Sensory hair cells of organ of corti
Question 7.
Rabbit has:
(a) Monocular vision
(b) Binocular vision
(c) Conjunctiva
(d) Cornea
Answer
Answer: (a) Monocular vision
Question 8.
Chemically, hormones are
(a) Proteins, steroids and biogenic amines
(b) Steroids only
(c) Biogenic amines only
(d) Proteins only
Answer
Answer: (a) Proteins, steroids and biogenic amines
Question 9.
Cochlea of mammalian ear is concerned with:
(a) Balancing of body
(b) Hearing
(c) Pereception of atmospheric pressure
(d) Both (a) and (b)
Answer
Answer: (b) Hearing
Question 10.
The ‘islets of Langerhans’ are found in
(a) Alimentary canal
(b) Stomach
(c) Liver
(d) Pancreas
Answer
Answer: (d) Pancreas
Question 11.
Meibomian gland are associated with:
(a) Eyes
(b) Ears
(c) Reproductive organ
(d) Skin
Answer
Answer: (a) Eyes
Question 12.
Injection of which of the following increases metabolic rate :-
(a) STH
(b) Insulin
(c) Thyroxine
(d) Testosterone
Answer
Answer: (c) Thyroxine
Question 13.
Parathormone regulates:
(a) Blood calcium level
(b) Calcium phosphate level
(c) Body temperature
(d) None of the above
Answer
Answer: (a) Blood calcium level
Question 14.
Steroid hormones easily pass through the plasma membrane by simple diffusion because they
(a) Are water-soluble
(b) Are lipid-soluble
(c) Enter through pores
(d) Contain carbon and hydrogen
Answer
Answer: (b) Are lipid-soluble
Question 15.
BMR is increased due to:
(a) Sympathetic nervous system
(b) Adrenaline
(c) Parasympathetic nervous system
(d) Thyroxine
Answer
Answer: (d) Thyroxine
Question 16.
In the mechanism of action of a protein hormone, one of the second messengers is
(a) Gastrin
(b) Cyclic AMP
(c) T3
(d) Insulin
Answer
Answer: (b) Cyclic AMP
Question 17.
How many semicircular canals are found in internal ear of rabbit:
(a) Two
(b) Three
(c) Four
(d) One
Answer
Answer: (b) Three
Question 18.
The aperture controlling the light entering in eye is called:
(a) Iris
(b) Pupil
(c) Blind spot
(d) Sclerotic layer
Answer
Answer: (b) Pupil
Question 19.
Which of the following is NOT an endocrine gland?
(a) Salivary gland
(b) Pituitary gland
(c) Parathyroid gland
(d) Pancreas gland
Answer
Answer: (a) Salivary gland
Question 20.
Harderian gland occurs in:
(a) Whale
(b) Frog
(c) Birds
(d) All the above
Answer
Answer: (d) All the above
Question 21.
Cretinism is due to abnormal secretion of:
(a) Thyroid stimulating hormone
(b) Thyroxine
(c) Calcitonin
(d) Parathormone
Answer
Answer: (b) Thyroxine
Question 22.
Which one of the following is not a second messenger in hormone action?
(a) Calcium
(b) cAMP
(c) cGMP
(d) Sodium
Answer
Answer: (d) Sodium
Question 23.
The fluid surrounding the membranous labyrinth of rabbit is called:
(a) Endolymph
(b) Perilymph
(c) Haemolymph
(d) Cerebrospinal fluid
Answer
Answer: (a) Endolymph
Question 24.
Deficiency of which of the following may cause bone deformation :-
(a) PTH
(b) Vitamin D
(c) STH
(d) Thyroxine
Answer
Answer: (b) Vitamin D
Question 25.
Which of the following is anvil shaped ear ossicle:
(a) Incus
(b) Malleus
(c) Stapes
(d) Humerus
Answer
Answer: (a) Incus
Question 26.
If thyroid is removed from tadpole of frog, it will:
(a) Die soon
(b) Remains tadpole throughout life
(c) Grows in to giant frog
(d) Grows into dwarf frog
Answer
Answer: (b) Remains tadpole throughout life
Question 27.
The thyroid gland is homologous to which part of lower chordates
(a) Neural gland
(b) Pharyngeal gill pouch
(c) Nerve cord
(d) Endostyle
Answer
Answer: (d) Endostyle
Question 28.
Cochlea arises from:
(a) Utriculus
(b) Sacculus
(c) Middle ear
(d) Semicircular canals
Answer
Answer: (b) Sacculus
Question 29.
In Hashimoto’s disease symptoms develop like :-
(a) Hyposecretion of thyroxine
(b) Hyper secretion of thyroxine
(c) Hyposecreation of adrenaline
(d) None of the above
Answer
Answer: (a) Hyposecretion of thyroxine
Question 30.
The vitamin which works along with para thyroid hormone is:
(a) Vitamin C
(b) Calciferol
(c) Tocopherol
(d) Vitamin – B12
Answer
Answer: (b) Calciferol
Question 31.
Transmission of light into nerve impulse is a:
(a) Mechanical process
(b) Physical process
(c) Chemical process
(d) Biochemical process
Answer
Answer: (d) Biochemical process
Question 32.
Myopia is a defect in human eyes in which the image is formed:
(a) Behind retina and can be corrected by using convex lens
(b) Behind retina and can be corrected by using concave lens
(c) Infront of retina and can be corrected by using concave lens
(d) Infront of retina and can be corrected by using convex lens
Answer
Answer: (c) Infront of retina and can be corrected by using concave lens
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