CBSE Class 11 Biology Chemical Coordination and Integration Worksheet Set 01

Official Class 11 Biology Worksheets: Chapter 19 Chemical Coordination and Integration

Review targeted practice sets for Class 11 Biology Chapter 19 Chemical Coordination and Integration. Built according to official educational guidelines for the 2026-27 academic year, these downloadable worksheets support daily revision and core concept reinforcement.

Chapter-wise Practice Material: Chapter 19 Chemical Coordination and Integration

Access the complete worksheet PDF for Chapter 19 Chemical Coordination and Integration below. Regular practice with these targeted questions builds familiarity with standard exam patterns and helps secure higher marks in final Biology evaluations.

MULTIPLE CHOICE QUESTIONS

Question. Addison's disease result from 
(a) hyposecretion of gonads
(b) hyposecretion of adrenal gland
(c) hypertrophy of kidney
(d) hyposecretion of pituitary gland
Answer. B

Question. Which of the following statements regarding glucagon is false?
(a) It is secreted by α-cells of Langerhans.
(b) It acts antagonistically to insulin.
(c) It decreases blood sugar level.
(d) The gland responsible for its secretion is heterocrine gland.
Answer. C

Question. Which one of the following four gland is correctly matched with the accompanying description? 
(a) Thyroid - Hyperactivity in young children causes cretinism
(b) Thymus - Starts undergoing atrophy after puberty
(c) Parathyroid - Secretes para-thormone, which promotes movement of calcium ions from blood into bones during calcification
(d) Pancreas - Delta cells of the 'islets of Langerhans' secrete a hormone, which stimulates glycolysis in liver
Answer. B

Question.The development of adult characteristics in a moulting insect is promoted by
(a) Thyroxine
(b) Ecdysone
(c) Pheromone
(d) None of these
Answer. B

Question. Which one of the following hormones contains iodine?
(a) Thyroxine
(b) Testosterone
(c) Insulin
(d) Adrenaline
Answer. A

Question. Heart beat increases at the time of interview because of
(a) renin
(b) rennin
(c) adrenaline
(d) Diuretic ADH
Answer. C

Question. Conn’s disease is caused by the over secretion of 
(a) ADH
(b) ACTH
(c) Oxytocin
(d) Aldosterone
Answer. D

Question. Acromegaly is due to hypersecretion of 
(a) Insulin
(b) Thyroxine
(c) Growth hormone
(d) None of these
Answer. C

Question. Which one of the following four secretions is correctly matched with its source, target and nature of action?
CBSE Class 11 Chemical Coordination and Integration

Answer. D


ASSERTION REASON QUESTIONS

Directions : These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following five responses.
(a) If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
(b) If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
(c) If the Assertion is correct but Reason is incorrect.
(d) If both the Assertion and Reason are incorrect.
(e) If the Assertion is incorrect but the Reason is correct.

Question. Assertion: The regulation of RBC production is accomplished by FSH.
Reason: Erythropoietin hormone circulates to red bone marrow where it increases stem cell mitosis and speed up development of RBCs.
Answer. E

Question. Assertion : Diabetes insipidus is marked by excessive urination and too much thirst of water.
Reason : Anti-diuretic hormone (ADH) is secreted by the posterior lobe of pituitary gland.
Answer. B

Question. Assertion : Our body secretes adrenaline in intense cold. 
Reason : Adrenaline raises metabolic rate.
Answer. A

Very Short Answer
 
Question. What are hormones? 
Answer. Hormones are non-nutrient chemicals which act as an intercellular messenger and are produced in trace amounts.
 
Question. What are nuclei? 
Answer. Several groups of neurosecretory cells are called nuclei.
 
Question. What are ductless glands? 
Answer. Endocrine glands are also known as the ductless glands.
 
Question. What is melatonin? 
Answer. Pineal secretes a hormone is called melatonin.
 
Question. Where pituitary gland is located?
Answer. The pituitary gland is located in a bony cavity.
 
 

Please click the link below to download CBSE Class 11 Biology Chemical Coordination and Integration Worksheet Set A

 

Free study material for Biology

Chapter 19 Chemical Coordination and Integration Practice Sheet and Solutions for Class 11 Biology

Download Practice Sheet: Chapter 19 Chemical Coordination and Integration (Class 11 Biology)

Review targeted practice exercises for Class 11 Biology Chapter 19 Chemical Coordination and Integration. Curated to match official CBSE guidelines, these downloadable PDF sheets support daily revision and core concept reinforcement.

Concept Clarification for Chapter 19 Chemical Coordination and Integration

Cross-reference your completed exercises with comprehensive NCERT solutions for Class 11 Biology to ensure absolute clarity across all sub-topics in this chapter.

Additional Study Resources for Class 11 Biology

Follow up your worksheet practice by attempting the interactive online Biology MCQ test for this chapter to evaluate your execution speed. All platform resources are free to access.

FAQs

Where can I download the latest PDF for CBSE Class 11 Biology Chemical Coordination and Integration Worksheet Set 01?

You can download the teacher-verified PDF for CBSE Class 11 Biology Chemical Coordination and Integration Worksheet Set 01 from StudiesToday.com. These practice sheets for Class 11 Biology are designed as per the latest CBSE academic session.

Are these Biology Class 11 worksheets based on the 2026-27 competency-based pattern?

Yes, our CBSE Class 11 Biology Chemical Coordination and Integration Worksheet Set 01 includes a variety of questions like Case-based studies, Assertion-Reasoning, and MCQs as per the 50% competency-based weightage in the latest curriculum for Class 11.

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Yes, we have provided detailed solutions for CBSE Class 11 Biology Chemical Coordination and Integration Worksheet Set 01 to help Class 11 and follow the official CBSE marking scheme.

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Daily practice with these Biology worksheets helps in identifying understanding gaps. It also improves question solving speed and ensures that Class 11 students get more marks in CBSE exams.

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