Chemoreception in Organisms
Kerala Board · Class 10 · Biology
Most important questions from Chemoreception in Organisms for Kerala Board Class 10 Biology board exam 2026. MCQs, short answer, and long answer questions with marks.
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Sample Questions
Which plant hormones are involved in seed germination? (Select all correct answers)
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Gibberellins, Abscisic acid, Cytokinins
Gibberellins break seed dormancy, abscisic acid maintains dormancy until favorable conditions arise, and cytokinins stimulate cell division and differentiation in germinating seeds. Ethylene and auxins are not directly involved in seed germination.
Which gland produces thyroxine?
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Thyroid
The thyroid gland, located in the neck region, produces thyroxine from its follicular cells. Thyroxine controls metabolism, body temperature, and brain development in children.
Which hormones regulate calcium levels in blood? (Select all correct answers)
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Calcitonin, Parathormone
Calcitonin (from thyroid) lowers blood calcium levels, while parathormone (from parathyroid) raises blood calcium levels. Together they maintain calcium homeostasis at 9-11 mg/dL.
Normal fasting blood glucose level ranges from:
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70-100 mg/dL
Normal fasting blood glucose (FBS) level in healthy individuals is 70-100 mg/dL. Levels above 126 mg/dL indicate diabetes mellitus.
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Sources & Official References
- Kerala Board of Public Examinations — keralapareekshabhavan.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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