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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
In tissue culture, cells from the growing tip of a plant are placed in an artificial medium where they first divide to form a callus. What does the callus develop into when transferred to a medium containing growth and differentiation hormones? (A) Spores (B) Pollen grains (C) Plantlets (D) Sporangia
  1. A Spores
  2. B Pollen grains
  3. C Plantlets
  4. D Sporangia
Generated by claude-sonnet-4-6 · 2026-06-26 01:00 · grounding rag
Model Answer

(C) Plantlets

When the callus is transferred to a medium containing hormones for growth and differentiation, it develops into plantlets, which are then placed in soil to grow into mature plants.

Explanation

The answer is directly from the "Tissue Culture" box in Chapter 7 (Vegetative Propagation section). The key sequence is: cells → callus (in artificial medium) → plantlets (after transfer to hormone-containing medium) → mature plants in soil. Spores and sporangia relate to Rhizopus/spore formation; pollen grains relate to sexual reproduction in flowers — none of these are products of tissue culture.

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