NCERT Class 11 Biology Chapter 19 Chemical Coordination and Integration Test Mock Test
This free online test covers Chapter 19, Chemical Coordination and Integration, from the NCERT Class 11 Biology textbook. The 35 questions are written directly from the chapter — definitions, processes, worked examples and the points the book italicises — so a score here tells you how much of the chapter actually stuck, not how well you guess. Each answer carries an explanation that says why the right option is right and why the other three fail, which is where most of the learning happens. Attempt it after your first read of the chapter, then again before the exam. There is no negative marking, and you can review the full solution the moment you submit.
Duration
35 mins
Questions
35 MCQs
Total Marks
35 pts
Negative
0 per wrong
Topics Covered in This Paper
Sample Questions
Q1.The current scientific definition of a hormone given in the chapter is that hormones are:
- AChemicals produced only by organised endocrine glands and always carried in the blood
- BNon-nutrient chemicals which act as intercellular messengers and are produced in trace amounts
- CEnzymes that speed up the metabolic reactions of the tissue that makes them
- DNutrient chemicals produced in large amounts and stored in ducts before release
Q2.Endocrine glands are also called ductless glands because:
- AThey release their secretions into the alimentary canal through a common duct
- BThey possess ducts that open only during periods of stress
- CTheir secretions are used only within the cells that make them
- DThey lack ducts and release their secretions directly rather than through a tube
Q3.The hypothalamus regulates the anterior and posterior pituitary in different ways, in that:
- ABoth lobes receive hypothalamic hormones through the general blood circulation
- BBoth lobes are regulated only by nerve fibres from the hypothalamic nuclei
- CIts releasing and inhibiting hormones reach the anterior pituitary through a portal circulatory system, while the posterior pituitary is under direct neural regulation
- DIts releasing and inhibiting hormones reach the posterior pituitary through a portal circulatory system, while the anterior pituitary is under direct neural regulation
Before you begin
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Each correct answer carries +1 marks.
Each wrong answer carries -0 marks.
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Disclaimer: The questions provided here are extracted and digitized from previous year papers using automated processes. They may contain typographical errors, formatting issues, or minor variations from the actual examination paper. While we have done our best to verify the accuracy of the official answer keys, discrepancies may occasionally exist. Please refer to the official commission website for the most authentic paper.
Timer starts immediately and keeps running even if you close the tab. Make sure you have 35 uninterrupted minutes.
FAQ
Frequently asked questions
Frequently Asked Questions
- How many questions are in the NCERT Class 11 Biology Chapter 19 Chemical Coordination and Integration Test mock test?
- This paper has 35 multiple-choice questions carrying 35 marks in total, to be attempted in 35 minutes.
- Is the NCERT Class 11 Biology Chapter 19 Chemical Coordination and Integration Test mock test free to attempt?
- Yes. You can attempt the full paper online for free on AI Test Planet, and see your score and correct answers immediately after submitting.
- Does this paper have negative marking?
- No, there is no negative marking on this paper, so an attempted guess costs you nothing.
- Are solutions and explanations available?
- Yes. After you submit, every question shows the correct answer with a step-by-step explanation, along with a topic-wise breakdown of your performance.