Class 11 Biology Chapter 1 NEET Questions. We covered all the Class 11 Biology Chapter 1 NEET Questions in this post for free so that you can practice well for the exam.
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MCQ on Biology for NEET Students
ACTH is a …….. hormone.
(A) hypercalcemic
(B) pituitary
(C) anti-diuretic
(D) Hypothalamic
Option b – pituitary
The portion of the myofibril between two successive ‘Z’ lines is
(A) the central part of the H zone.
(B) considered as the functional unit of contraction.
(C) the elastic fiber called the ‘A’ band.
(D) the part where thick filaments overlap the thin filaments.
Option b – considered as the functional unit of contraction
…….. acts on the melanin-containing cells and regulates pigmentation of the skin.
(A) MSH
(B) FSH
(C) TSH
(D) LH
Option a – MSH
Visceral muscles
(A) are known as the muscles of the heart.
(B) are also known as striated muscles.
(C) activities are under the voluntary control of the nervous system.
(D) are located in the inner walls of the alimentary canal and reproductive tract.
Option d – are located in the inner walls of the alimentary canal and reproductive tract.
Out of the 12 pairs of cranial nerves, …….. pairs remain in the head region.
(A) 5
(B) 7
(C) 10
(D) 11
Option d – 11
Which of the following hormones regulate spermatogenesis?
(A) Vasopressin and LH
(B) LH and TSH
(C) FSH and androgens
(D) oxytocin and FSH
Option c – FSH and androgens
Muscle is a specialized tissue of …….. origin.
(A) mesodermal
(B) ectodermal
(C) endodermal
(D) none of these
Option a – mesodermal
The target organ of the hormone thyrotropin is
(A) the adrenal gland
(B) the thymus gland
(C) the pineal gland
(D) the thyroid gland
Option d – the thyroid gland
The pelvic girdle consists of
(A) two coxal bones
(B) bones of upper limbs
(C) one coxal bone
(D) clavicle and scapula
Option a – two coxal bones
Which of the following is INCORRECT?
(A) The hormone erythropoietin stimulates erythropoiesis.
(B) Gastrin stimulates the synthesis of HCI and pepsinogen.
(C) Gastric inhibitory peptide inhibits gastrin. secretion and decreases peristalsis.
(D) The hormone Erythropoietin is secreted by the duodenum.
Option d – The hormone Erythropoietin is secreted by the duodenum.
Identify the INCORRECT match with respect to the disorders and their symptoms.
(A) Diabetes insipidus Water loss and dehydration
(B) Diabetes mellitus – Loss of glucose through urine and formation of ketone bodies
(C) Addison’s disease – Acute weakness and fatigue
(D) Exophthalmic goiter – Decreased basal metabolic rate and shrinking of the thyroid gland
Option d – Exophthalmic goiter – Decreased basal metabolic rate and shrinking of the thyroid gland
The thymus gland is located
(A) between lungs behind the sternum on the ventral side of the aorta
(B) one at the anterior part of each kidney
(C) is present in the scrotal sac of male individuals
(D) on the back side of the thyroid gland
Option a – between lungs behind the sternum on the ventral side of the aorta
The functioning of this hormone is antagonistic to aldosterone
(A) ANF
(B) glucagon
(C) TCT
(D) PTH
Option a – ANF
Beta cells of islets of Langerhans secrete
(A) thymosin
(B) glucagon
(C) insulin
(D) secretin
Option c – insulin
Which of the following receptor is NOT located in the skin?
(A) Thermoreceptor
(B) Tangoreceptor
(C) Tactile receptor
(D) Statoreceptor
Option d – Statoreceptor
Which of the following is NOT a function of thymosin?
(A) It plays a major role in the differentiation of T lymphocytes.
(B) It promotes the production of antibodies.
(C) It regulates blood calcium levels.
(D) It influences cell-mediated immunity.
Option c – It regulates blood calcium levels.
Myosin filament
(A) are a thin filament and a polymerized protein
(B) lacks an active site for actin
(C) goes back to a relaxed state after releasing ADP and P₁
(D) is made up of a thick globular head with two long arms
Option c – goes back to a relaxed state after releasing ADP and P₁
Which of the following is the function of the parasympathetic nervous system?
(A) Relaxes gall bladder
(B) Decreases urine output
(C) Increases the rate of heartbeat
(D) Stimulates secretion of saliva
Option d – Stimulates secretion of saliva
The hormone which stimulates the conversion of glycogenesis :
(A) androgen
(B) ADH
(C) glucagon
(D) insulin
Option d – insulin
Read the statements and select the correct option. i. Muscle contraction is initiated by a signal sent by the central nervous system (CNS) via a motor neuron. ii. Shortening of the sarcomere is caused due to inwards pulling of Z lines attached to actins. iii. During muscle contraction, the ‘I’ bands retain their length and the ‘A’ bands get reduced.
(A) i, ii and iii are incorrect
(B) i, ii and iii are correct
(C) i i is correct, ii and iii are incorrect
(D) i i and ii are correct and iii is incorrect
Option d – i i and ii are correct and iii is incorrect
Pick out the CORRECT statement.
(A) The tectorial membrane is a thin elastic membrane located in the middle ear.
(B) The organ of Corti is a structure located on the basilar membrane.
(C) Crista ampullaris lacks hair cells.
(D) The membranous labyrinth is surrounded by a fluid called endolymph.
Option b – The organ of Corti is a structure located on the basilar membrane.
Read the following statements and select the correct option. Statement I: Epinephrine is an amino acid derivative. Statement II: Estradiol is a steroid hormone.
(A) Statement I is correct and II is incorrect.
(B) Statement I is incorrect and II is correct.
(C) Both Statements I and II are correct.
(D) Both Statements I and II are incorrect.
Option c – Both Statements I and II are correct.
Assertion: Repeated activation of the muscles during strenuous exercises can cause fatigue. Reason: Anaerobic breakdown of glycogen causes the accumulation of lactic acid in muscles.
(A) Both assertion and reason are true and the reason is the correct explanation of assertion.
(B) Both assertion and reason are true and the reason is not the correct explanation of assertion.
(C) The assertion is true and the reason is false.
(D) Both assertion and reason are false.
Option a – Both assertion and reason are true and the reason is the correct explanation of assertion.
Which of the following nerve does NOT originate from the lateral side of the medulla oblongata?
(A) Vestibulocochlear
(B) Glossopharyngeal
(C) Vagus
(D) Trochlear
Option d – Trochlear
We covered all the class 11 biology chapter 1 neet questions above in this post for free so that you can practice well for the exam.
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