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Science (086) — AI-generated practice question

AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.

Q1. [1] straightforward exam-ready
Assertion (A): Plant hormones are synthesised at places away from where they act. Reason (R): Plant hormones diffuse from their site of synthesis to the site of action.
  1. A Both A and R are true, and R is the correct explanation of A.
  2. B Both A and R are true, but R is NOT the correct explanation of A.
  3. C A is true but R is false.
  4. D A is false but R is true.
Generated by claude-sonnet-4-6 · 2026-06-26 01:00 · grounding rag
Model Answer

Option A — Both A and R are true, and R is the correct explanation of A. Hormones are synthesised in one part of the plant and diffuse to another part to bring about the desired effect.

Source: What you have learnt, Chapter 6

Explanation

The key summary point states: "Hormones produced in one part of an organism move to another part to achieve the desired effect." This directly supports both A (synthesised away from site of action) and confirms R (diffusion/movement) as the correct explanation of A. Choose option A when R logically explains why A is true.

Previous-year CBSE Grade 10 board exam questions, organised by subject and chapter, each with a model answer — free to read and print.