GANGWAR SIR BIOZONE BAREILLY
BIOLOGY
Class: 11 (2025-26)
CLASS TEST
TIME: 1.5 HOURS
M.M.: 45
General Instructions:
• This question paper contains 22 questions.
• All questions are compulsory.
• Q.1 to 5 (Multiple Choice Questions (MCQs)): 5 questions. Each question carries 1 mark.
• Q.6 to 7 (Assertion Reason Questions): 2 questions. Each question carries 1 mark.
• Q.8 to 11 (Very Short Answer Questions): 4 questions. Each question carries 1 mark.
• Q.12 to 16 (Short Answer Questions): 5 questions. Each question carries 2 marks.
• Q.17 to 19 (Competency Based Questions): 3 questions. Each question carries 3 marks.
• Q.20 to 22 (Long Answer Questions): 3 questions. Each question carries 5 marks.
Topics Covered:
• Chemical Coordination and Integration
MULTIPLE CHOICE QUESTIONS (MCQS)
Questions 1 to 5 (5 questions × 1 mark each)
1
A patient exhibits symptoms of high blood glucose levels and ketones in urine. Deficiency of which hormone is most likely responsible for this condition?
A. Insulin
B. Glucagon
C. Cortisol
D. Adrenaline
2
Which hormone is administered clinically to induce labor contractions during childbirth?
A. Oxytocin
B. Prolactin
C. Progesterone
D. Estrogen
3
Which hormone deficiency would lead to symptoms of polyuria (excessive urination) and polydipsia (excessive thirst) due to reduced water reabsorption in kidneys?
A. Antidiuretic hormone (ADH)
B. Insulin
C. Aldosterone
D. Thyroxine
4
A patient shows symptoms of rapid heartbeat, weight loss despite increased appetite, heat intolerance, and protruding eyeballs. Which gland's hyperactivity and hormone overproduction is most likely responsible?
A. Thyroid gland producing thyroxine
B. Adrenal cortex producing cortisol
C. Anterior pituitary producing growth hormone
D. Pancreas producing glucagon
5
Which hormone is primarily responsible for regulating calcium homeostasis by increasing blood calcium levels?
A. Parathyroid hormone (PTH)
B. Calcitonin
C. Thyroxine
D. Aldosterone
ASSERTION REASON QUESTIONS
Questions 6 to 7 (2 questions × 1 mark each)
Instructions:
The following questions consist of two statements – Assertion (A) and Reason (R).
Answer these questions by selecting the appropriate option given below:
A. Both A and R are true, and R is the correct explanation of A.
B. Both A and R are true, and R is not the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
6
Assertion (A): Insulin lowers blood glucose levels. Reason (R): Insulin promotes cellular uptake of glucose and its conversion to glycogen.
7
Assertion (A): In hypothyroidism, the levels of Thyroid Stimulating Hormone (TSH) are elevated. Reason (R): Low thyroxine levels fail to inhibit the anterior pituitary's secretion of TSH.
VERY SHORT ANSWER QUESTIONS
Questions 8 to 11 (4 questions × 1 mark each)
8
Identify the hormone produced by the adrenal cortex that helps in regulating carbohydrate metabolism under stress conditions.
9
Analyze why the pancreas is considered both an endocrine and exocrine gland.
10
Explain how parathyroid hormone regulates blood calcium levels.
11
Why does iodine deficiency lead to elevated TSH levels in the blood?
SHORT ANSWER QUESTIONS
Questions 12 to 16 (5 questions × 2 marks each)
12
Name two hormones secreted by the adrenal medulla and state their function.
13
Explain how deficiency of insulin leads to hyperglycemia in the body.
14
Write the function of MSH and Melotonin
15
Describe the role of atrial natriuretic peptide (ANP) in regulating sodium ion concentration in blood.
16
State two physiological effects of thyroxine hormone in humans.
COMPETENCY BASED QUESTIONS
Questions 17 to 19 (3 questions)
17
During a school sports meet, 17-year-old athlete Priya suddenly experienced extreme fatigue, muscle weakness, and dizziness. Medical tests revealed her blood sodium levels were dangerously low while potassium was elevated. The doctor suspected an endocrine disorder related to adrenal hormone imbalance.
A. Analyze how aldosterone deficiency could explain Priya's electrolyte imbalance
B. Evaluate why glucocorticoid replacement alone wouldn't resolve this condition.
18
A Year-old office worker reported persistent tingling in fingers and muscle cramps. Blood tests showed hypocalcemia (low calcium) and hyperphosphatemia. Further investigation revealed low parathyroid hormone (PTH) levels and normal kidney function. The endocrinologist began treatment planning.
A. Analyze the relationship between PTH deficiency and the observed blood parameters
B. Evaluate the effectiveness of vitamin D supplements alone versus combination therapy
C. Create a monitoring plan to prevent complications of long-term hypocalcemia treatment
D. Critique the statement: 'This condition only affects bone health'
E. Design a patient education strategy about lifestyle modifications for this disorder
19
In a diabetes awareness camp, counsellors encountered a patient experiencing frequent hypoglycemic episodes despite insulin therapy. The patient had erratic eating patterns and occasionally skipped meals. Blood tests revealed inappropriately high insulin levels during hypoglycemia, prompting suspicion of hormonal misregulation.
A. Analyze how glucagon secretion failure exacerbates insulin-induced hypoglycemia
B. Evaluate the rationale for using continuous glucose monitoring in such cases
LONG ANSWER QUESTIONS
Questions 20 to 22 (3 questions × 5 marks each)
20
A patient exhibits symptoms of high metabolic rate, weight loss, increased heartbeat, and protrusion of eyes. Identify the hormone responsible for this condition and name the gland secreting it. Explain the role of this hormone in the human body. Discuss the disorder caused by its hypersecretion.
21
Explain the mechanism of hormone action using protein hormones and steroid hormones as examples. How do they differ in their mode of signalling
at the cellular level?
22
List the hormones secreted by the anterior pituitary gland and state one function of each hormone.
