BrainIt

Biology

Chemical Coordination and Integration

A Biology chapter of the NEET syllabus, and how to practise it for the computer-based exam.

Exam rules change between cycles. Confirm dates, syllabus and pattern against NTA's official site. We are not NTA.

Weightage: what the paper actually did

Chemical Coordination and Integration carried 4 questions in the NEET 2026 paper. One paper is a data point, not a destiny: NTA moves weight between chapters every cycle, which is why the weightage tables deserve care. The stable facts are the paper's shape: 180 questions, 720 marks, +4 right, −1 wrong.

Sample PYQs from this chapter

Real questions NTA asked from Chemical Coordination and Integration, with the answer and the working. Try before you peek.

Question 1 · NEET 2026

Which one of the following statements is incorrect?
  1. A.α\alpha-cells of pancreas secrete glucagon
  2. B.α\alpha-cells of pancreas secrete insulin
  3. C.Glucagon stimulates glycogenolysis
  4. D.β\beta-cells of pancreas secrete insulin
Answer and explanation

Answer: B

The islets of Langerhans divide the labour cleanly: α\alpha-cells secrete glucagon, which raises blood glucose, and β\beta-cells secrete insulin, which lowers it. Option B assigns insulin to the wrong cell type. Note that options A and D together give the correct pairing, so the two can be used to check each other. NCERT Class 11, Chemical Coordination and Integration.

Question 2 · NEET 2026

Which of the following statements related to pituitary gland are correct? Statement I: It is divided anatomically into adenohypophysis and neurohypophysis Statement II: It secretes follicle stimulating hormone Statement III: It secretes melanocyte stimulating hormone Statement IV: It does not secrete prolactin Choose the correct answer from the options given below :
  1. A.(I) and (II) only
  2. B.(I), (II) and (III) only
  3. C.(III) and (IV) only
  4. D.(II) and (III) only
Answer and explanation

Answer: B

The pituitary is anatomically divided into the adenohypophysis (anterior) and neurohypophysis (posterior), so (Statement I) is correct. The pars distalis of the adenohypophysis secretes FSH among other trophic hormones, making (Statement II) correct, and the pars intermedia secretes MSH, making (Statement III) correct. Statement IV is false: prolactin IS a pituitary hormone, secreted by the pars distalis to regulate mammary growth and milk production. NCERT Class 11, Chemical Coordination and Integration.

How to practise Chemical Coordination and Integration

Chapter by chapter, against real past-paper questions, on a screen: NEET is computer based from 2027. Read the chapter once, then attempt its PYQs until your accuracy stops climbing, and let the wrong answers tell you which lines to reread. If the chapter keeps refusing to stick, that has its own guide. There is also a free NEET mini mock with answers.

Nearby Biology chapters

Questions

How many questions did Chemical Coordination and Integration have in NEET 2026?

Chemical Coordination and Integration carried 4 questions in the NEET 2026 paper. Weightage shifts between cycles, so treat it as a probability, not a promise.

Where can I practise Chemical Coordination and Integration PYQs for NEET?

Explore available chapter-wise NEET practice in BrainIt, free until the 2027 exam. Review explanations and track chapter accuracy to guide your revision. Sample questions from this chapter are on this page.

Is Chemical Coordination and Integration important for NEET 2027?

It is part of the Biology syllabus the paper draws from, and NEET 2027 is computer based, so practise it on a screen. Your own accuracy in the chapter matters more than any weightage table: a heavy chapter you already score well on needs less time than a light one you keep missing.

Something here wrong or out of date? Email hello@brainit.pro and a person will read it.