CBSE Class 11 Biology NCERT Solutions: Chapter 22, Chemical Coordination and Integration

Aug 13, 2018 11:29 IST
Chemical Coordination and Integration: NCERT Solutions

The NCERT books contain a variety of questions given at the end of each chapter which are based on every conceptual topic. Students must solve all these NCERT questions to keep a track of their understanding. the NCERT questions doesn’t just measure how much you know, it helps reinforce the learning and make it more likely that you can retrieve the same information later. Moreover, practicing the NCERT questions will assure good results as most of the questions in examinations are based on the concepts and topics explained in NCERT textbooks.

In this article we are providing the NCERT Solutions for Class 11 Biology chapter 22, Chemical Coordination and Integration. All these NCERT solutions are prepared by the subject matter experts and are designed in a way to involve appropriate concepts. Referring these solutions, students will learn to write perfect answers in exams.

 CBSE Class 11 Biology Syllabus 2018 - 2019

Some of the questions and their solutions from NCERT Solutions for Class 11: Chemical Coordination and Integration, are as follows:

Q. Define the following:

(a) Exocrine gland

(b) Endocrine gland

(c) Hormone Answer

Ans. (a) Exocrine glands: Glands that discharge secretions into ducts are known as exocrine glands. Sebaceous gland in the skin, salivary gland in the buccal cavity, etc. are examples of exocrine glands.

(b) Endocrine glands: Glands that do not discharge their secretions into ducts are known as endocrine glands. Instead, these glands discharge their secretions directly into the blood. Pituitary gland, thyroid gland, adrenal gland, etc. are examples of endocrine glands.

(c) Hormones: Hormones are chemical messengers that regulate physiological processes in living organisms. They act upon specific cells/tissues/organs which are called target cells/tissues/organs.

Q. Which hormone deficiency is responsible for the following?

(a) Diabetes mellitus

(b) Goitre

(c) Cretinism

Ans. (a) Diabetes mellitus is characterized by abnormally high glucose levels in the blood due to the deficiency of hormone, called insulin.

(b) Goitre is characterised by an abnormal enlargement of the thyroid gland due to the deficiency of thyroxin hormone in the body.

(c) Cretinism is characterized by stunted growth in the baby due to the deficiency of thyroid hormone in the body.

Q. Give example(s) of:

(a) Hyperglycemic hormone and hypoglycemic hormone

(b) Hypercalcemic hormone

(c) Gonadotrophic hormones

(d) Progestational hormone

(e) Blood pressure lowering hormone

(f) Androgens and estrogens

Ans. (a) Hyperglycemic hormone and hypoglycemic hormone: Hyperglycemic hormone is glucagon, while hypoglycemic hormone is insulin.

(b) Hypercalcemic hormone: Parathyroid hormone (PTH) is hypercalcemic hormone.

(c) Gonadotrophic hormones: Luteinizing hormone and follicle stimulating hormones are examples of gonadotrophic hormone.

(d) Progestational hormone: Progesterone is a progestational hormone.

(e) Blood pressure lowering hormone: Nor-adrenalin is a blood pressure lowering hormone.

(f) Androgens and estrogens: Testosterone is an example of androgen, while an example of estrogen is estradiol.

Get the complete the NCERT solutions for Class 11: Chemical Coordination and Integration, from the following link:

Class 11 Biology NCERT Solutions: Chemical Coordination and Integration

Students may download the NCERT solutions for Class 11 Biology chapter- Chemical Coordination and Integration, in the form of PDF. 

Class 11 Biology NCERT Chapter: Chemical Coordination and Integration

Before solving the questions given in the Class 11 Biology NCERT chapter- Chemical Coordination and Integration, students should thoroughly read this chapter to grasp all the concepts explained in it. This will help you understand the problem discussed in a question and then come with an appropriate answer.

Main topics discussed in Class 11 Biology chapter: Chemical Coordination and Integration are:

  • Endocrine Glands and Hormones
  • Human Endocrine System
  • The Hypothalamus
  • The Pituitary Gland
  • The Pineal Gland
  • Thyroid Gland
  • Parathyroid Gland
  • Thymus
  • Adrenal Gland
  • Pancreas
  • Testis
  • Ovary
  • Hormones of Heart, Kidney and Gastrointestinal Tract
  • Mechanism of Hormone Action. 

Find below the link to download the complete Chapter:

Class 11 Biology NCERT Chapter: Chemical Coordination and Integration

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