NSEB Chemical Coordination Questions, Download PDF

NSEB Chemical Coordination Questions are an important part of the National Standard Examination in Biology syllabus. This topic covers how the human body regulates and coordinates functions through chemical messengers like hormones.

Chemical coordination mainly involves the endocrine system, which includes glands such as the pituitary, thyroid, adrenal, and pancreas. Understanding how these glands function and interact is essential for solving higher-level biology questions in competitive exams.

For students preparing for NSEB, mastering NSEB Chemical Coordination Questions helps in strengthening core concepts and improving accuracy. Regular practice of questions also enhances analytical thinking and application-based learning.

Key Topics Covered in Chemical Coordination

While practicing NSEB Chemical Coordination Question, students should focus on the following important areas:

• Endocrine glands and their functions

• Hormones and their mechanisms of action

• Feedback regulation systems

• Human endocrine system integration

• Disorders related to hormonal imbalance

Covering these topics thoroughly will make it easier to solve both direct and application-based questions.

NSEB Chemical Coordination Question PDF

NSEB Chemical Coordination Question PDF is a valuable resource for students preparing for the NSEB exam. It provides a collection of important and exam-oriented questions covering key topics such as hormones, endocrine glands, and feedback mechanisms.

By solving the NSEB Chemical Coordination Question PDF, students can improve their problem-solving skills and gain familiarity with the types of questions asked in the exam. It also serves as an effective tool for self-assessment, helping students identify weak areas and work on them systematically.

NSEB Chemical Coordination Question PDF

NSEB Chemical Coordination Question and Answers

This section on NSEB Chemical Coordination Question is designed to help students practice important and exam-oriented problems. The questions focus on key concepts such as hormone functions, endocrine system regulation, and real-life biological applications.

1. Which of the following systems jointly coordinate and regulate the physiological functions in the body?
(A) Neural system and the endocrine system
(B) Sensory system and digestive system
(C) Respiratory system and excretory system
(D) Cardiovascular system and reproductive system 

Solution: 1. (A)

2. Choose the incorrect statement w.r.t. hormones.
(A) Secretion of ductless glands
(B) Released into blood and are transported to a distantly located target organ
(C) Non-nutrient chemicals
(D) Act as intracellular messengers 

Solution: 2. (D)

3. All of the following are organised endocrine bodies in humans except
(A) Pituitary gland
(B) Kidney
(C) Thyroid gland
(D) Thymus 

Solution: 3. (B)

4. Releasing and inhibiting hormones of hypothalamus reach the pituitary gland through
(A) Nerve endings
(B) A portal circulation
(C) Through arterial blood
(D) Nuclei of hypothalamus 

Solution: 4. (B)

5. Assertion (A): Both FSH and LH hormones are secreted from pars distalis, collectively called as gonadotrophins.
Reason (R): These hormones act on testis in males and ovaries in females and stimulate the gonadal activity. In the light of above statements, select the correct option.
(A) Both (A) and (R) are true and (R) is the correct explanation of (A).
(B) Both (A) and (R) are true but (R) is not the correct explanation of (A)

(C) (A) is true but (R) is false.
(D) Both (A) and (R) are false. 

Solution: 5. (A)

6. Which of the following regions of pituitary gland is commonly called anterior pituitary?
(A) Pars intermedia
(B) Neurohypophysis
(C) Pars nervosa
(D) Pars distalis 

6. (D)

7. Choose the endocrine gland from the options given below that secrete a hormone for regulation of diurnal rhythm of our body
(A) Thymus
(B) Pineal
(C) Pituitary
(D) Thyroid 

Solution: 7. (B)

8. Match column-I with column-II and choose the correct option. 

(A) a-(i), b-(ii), c-(iii), d-(iv)
(B) a-(iv), b-(iii), c-(ii), d-(i)
(C) a-(ii), b-(iv), c-(i), d-(iii)
(D) a-(i), b-(iii), c-(ii), d-(iv) 

Solution: 8. (C)

9. Thyroid hormones do not directly regulate
(A) Basal metabolic rate
(B) Process of red blood cell formation
(C) Defence capability of the body
(D) Maintenance of water and electrolyte balance 

Solution: 9. (C)

10. Thymosins play a major role in the
(A) Differentiation of T-lymphocytes
(B) Regulation of menstruation
(C) Maturation of erythrocytes
(D) Resorption of Ca2+ from bones

Solution: 10. (A)

11. Addison’s disease is caused due to
(A) Hypersecretion of the adrenal cortical hormones
(B) Underproduction of hormones by the adrenal cortex
(C) Underproduction of hormones by the adrenal medulla
(D) Hypersecretion of the adrenal medullary hormones 

Solution: 11. (B)

12. Glucocorticoids are secreted from
(A) Adrenal cortex
(B) Adrenal medulla
(C) Pancreas
(D) Parathyroid gland 

Solution: 12. (A)

13. Assertion (A): Glucagon is considered as a hyperglycemic hormone in our body.
Reason (R): It stimulates glycogenolysis and gluconeogenesis in liver and reduces cellular uptake of glucose and its utilisation. 

In the light of above statements, select the correct option.
(A) Both (A) and (R) are true and (R) is the correct explanation of (A).
(B) Both (A) and (R) are true but (R) is not the correct explanation of (A).
(C) (A) is true but (R) is false.
(D) Both (A) and (R) are false. 

Solution: 13. (A)

14. In the body of humans, which of the following glands is considered as a composite gland? (A) Pituitary 
(B) Pineal
(C) Pancreas
(D) Parathyroid 

Solution: 14. (C)

15. Testosterone is secreted from Leydig cells which are present in
(A) Seminiferous tubules
(B) Intertubular space of testis
(C) Epididymis
(D) Prostate gland

Solution: 15. (B) 

16. Ovary produces two group of steroid hormones called
(A) Oestrogen and relaxin
(B) Progesterone and relaxin
(C) Oestrogen and progesterone
(D) Androgens and relaxin

Solution: 16. (C) 

17. Atrial natriuretic factor secreted from the atrial wall of our heart is a
(A) Amino acid derivative
(B) Peptide hormone
(C) Phospholipid
(D) Steroid hormone 

Solution: 17. (B) 

18. Match column-I with column-II 

(A) a-(i), b-(ii), c-(iii), d-(iv)

(B) a-(ii), b-(iii), c-(i), d-(iv)

(C) a-(ii), b-(iv), c-(iii), d-(i)

(D) a-(iii), b-(iv), c-(ii), d-(i)

Solution: 18. (B) 

19. Hormones produce their effects on target tissues by binding to specific proteins called
(A) Hormone receptors
(B) Target cells
(C) Sodium potassium pump
(D) Channel proteins 

Solution: 19. (A)

20. Which of the following hormones interact with membrane bound receptors?
(A) Prolactin
(B) Testosterone
(C) Progesterone
(D) Aldosterone

Solution: 20. (A)