MCQs for Biology Class 11 with Answers Chapter 21 Neural Control and Coordination
Students of class 11 Biology should refer to MCQ Questions Class 11 Biology Neural Control and Coordination with answers provided here which is an important chapter in Class 11 Biology NCERT textbook. These MCQ for Class 11 Biology with Answers have been prepared based on the latest CBSE and NCERT syllabus and examination guidelines for Class 11 Biology. The following MCQs can help you to practice and get better marks in the upcoming class 11 Biology examination
Chapter 21 Neural Control and Coordination MCQ with Answers Class 11 Biology
MCQ Questions Class 11 Biology Neural Control and Coordination provided below have been prepared by expert teachers of grade 11. These objective questions with solutions are expected to come in the upcoming Standard 11 examinations. Learn the below provided MCQ questions to get better marks in examinations.
Question. Which of the following statement is false for hormones of the adrenal medulla?
(a) They increase alertness
(b) Increase rate of respiration
(c) They inhibit the breakdown of lipids and proteins
(d) They stimulate the breakdown of glycogen and increases glucose level in blood
Question. Which of the following statement is not correct regarding ACTH?
(a) It is secreted by the anterior lobe of pituitary.
(b) It regulates skin pigmentation in human being
(c) It acts on the adrenal cortex and mainly stimulates the secretion of mineralocorticoids.
(d) Its hyposecretion causes bronze-like pigmentation of skin.
Question. Select the type of gland it its appropriate example.
(a) Adrenal gland is an exocrine gland
(b) Mammary gland is an apocrine gland
(c) The thymus gland is a heterocrine gland
(d) Sebaceous gland is an endocrine gland
Question. The hormones which increase alertness, pupillary dilation, piloerection and sweating are
(a) Polypeptide hormones
(b) Steroid hormones
(d) Amino acid derivatives
Question. The correct pathway of milk ejection from mammary glands is
i. Sensory impulses are transmitted through somatic nerves from the nipples to the mother’s spinal cord and then to her hypothalamus.
ii. Expulsion of milk from alveoli into the ducts.
iii. Sucking action of baby on the breast.
iv. Contraction of myoepithelial cells.
v. Secretion of oxytocin.
(a) iv, iii, v, i & ii
(b) iii, i, v, ii & iv
(c) iii, i, v, iv & ii
(d) iv, iii, i, v & ii
Question. The largest number of neurons are found in-
(c) Spinal cord
Question. Which statement is true for nerve conduction?
(a) During resting stage axonal membrane is less permeable for K+ and more permeable for Na+.
(b) Concentration gradient generated when active transportation of ions occurs by Na+?K+ pump.
(c) During transmission of impulse Na+ out flux continuously.
(d) Rise in stimulus induced permeability to Na+ is long lived.
Question. At the base of cochlea, the scala vestibuli ends at….., where as scala tympani terminates at the ……. which opens to the middle ear.
(a) oval window, round window
(b) round window, oval window
(c) circular window, oval window
(d) round window, circular window
Question. Polarized and depolarized conditions of neuron are maintained by which specific ions respectively?
(a) K+ and Na+
(b) Na+ and K+
(c) Ca+2 and K+
(d) Na+ and Ca+2
Question. Cerebrum has more number of neurons on its surface due to its ?
(a) Narrow surface with more gyri & sulci
(b) Convoluted surface with less gyri & sulci
(c) There are only pseudounipolar neurons present with gyri & sulci
(d) None of these
Question. In mechanism of hearing, impulses are transmitted by afferent fibres via auditory nerves to the auditory cortex of the brain, which cells remain in the close contact with the afferent nerves fibres.
(a) Basal end of hair cell.
(b) Apical part of each hair cell.
(c) Any part of hair cells.
(d) Stereocilia of hair cells.
Question. The medulla contains centres which controls :
(b) Cardiovascular reflexes
(c) Gastric secretion
(d) All of these
Question. These are few steps of synaptic transmission. Arrange them in correct order of synaptic transmission.
(a) Action of cholinestrase on acetylcholine decomposes it into choline & acetate.
(b) Development of AP causes entry of Ca+2 into axon telodendria.
(c) Development of EPSP causes opening of Na+ channels
(d) Release of ACh into synaptic cleft after bursting of vesicles.
(a) d → c → b → a
(b) b → d → c → a
(c) b → d → a → c
(d) d → a → b → c
Question. At least how may afferent and efferent neurons are involved is any reflex pathway ?
(a) One afferent, one efferent
(b) One afferent, one efferent and one interneuron
(c) One afferent, one efferent and two interneuron
(d) Two afferent, Two efferent and one interneuron