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100+ Free WBBSE Madhyamik Life Science (English Adaptation) Practice Questions

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Key Facts: WBBSE Madhyamik Life Science (English Adaptation) Exam

An English-language MCQ study adaptation based on the WBBSE Class 10 Madhyamik Life Science syllabus, designed to test knowledge across plant and animal physiology, genetics, evolution, and ecology.

Sample WBBSE Madhyamik Life Science (English Adaptation) Practice Questions

Try these sample questions to test your WBBSE Madhyamik Life Science (English Adaptation) exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which plant hormone is primarily responsible for phototropic movement in shoots by causing cell elongation on the shaded side?
A.Gibberellin
B.Auxin
C.Cytokinin
D.Abscisic Acid
Explanation: Auxin (indole-3-acetic acid) migrates to the shaded side of a plant stem, stimulating cell elongation there and causing the stem to bend towards light.
2The movement of plant organs in response to an external stimulus where the direction of movement is independent of the direction of stimulus is called:
A.Tropic movement
B.Nastic movement
C.Tactic movement
D.Growth movement
Explanation: Nastic movements are non-directional plant responses where the movement direction is determined by the internal structure of the organ rather than the direction of the external stimulus.
3Which plant hormone is essential for breaking seed dormancy and inducing α-amylase synthesis during germination?
A.Cytokinin
B.Abscisic Acid
C.Ethylene
D.Gibberellin
Explanation: Gibberellins trigger seed germination by stimulating the aleurone layer of seeds to synthesize hydrolases like α-amylase, breaking down starch into maltose.
4The delay of leaf senescence induced by cytokinin treatment in detached leaves is known as the:
A.Richmond-Lang effect
B.Emerson effect
C.Pasteur effect
D.Warburg effect
Explanation: The Richmond-Lang effect describes how application of cytokinins retards protein breakdown and chlorophyll degradation in excised leaves, preserving freshness.
5Which of the following is a gaseous plant hormone that promotes fruit ripening?
A.Indole-3-acetic acid
B.Zeatin
C.Ethylene
D.Abscisic acid
Explanation: Ethylene (C2H4) is a gaseous plant hormone that accelerates fruit ripening, leaf abscission, and triple response in seedlings.
6Which hormone is secreted by the adrenal medulla during stress or fear, preparing the body for 'fight or flight'?
A.Thyroxine
B.Insulin
C.Adrenaline
D.Estrogen
Explanation: Adrenaline (epinephrine) increases heart rate, blood pressure, blood glucose, and respiratory rate to prepare the body for emergency action.
7Which hormone regulates the Basal Metabolic Rate (BMR) and heat production in human tissues?
A.Thyroxine
B.Parathormone
C.Calcitonin
D.Aldosterone
Explanation: Thyroxine (T4), secreted by the thyroid gland, regulates basal metabolic rate, protein synthesis, and calorigenesis in body cells.
8Which hormone is secreted by the beta cells of the Islets of Langerhans in the pancreas?
A.Glucagon
B.Somatostatin
C.Insulin
D.Gastrin
Explanation: Beta cells of the Islets of Langerhans produce insulin, which facilitates glucose uptake into muscle and adipose cells, lowering blood sugar.
9Which endocrine gland is referred to as the 'master gland' because its trophic hormones control other endocrine glands?
A.Pituitary gland
B.Adrenal gland
C.Thyroid gland
D.Pancreas
Explanation: The pituitary gland (specifically the anterior lobe) secretes trophic hormones like TSH, ACTH, FSH, and LH that regulate thyroid, adrenal cortex, and gonads.
10Which posterior pituitary hormone stimulates milk ejection from mammary glands and uterine contractions during labor?
A.Prolactin
B.Luteinizing Hormone
C.Vasopressin
D.Oxytocin
Explanation: Oxytocin is synthesized in the hypothalamus, stored in the posterior pituitary, and stimulates contraction of myoepithelial cells in mammary glands and smooth muscle of the uterus.

About the WBBSE Madhyamik Life Science (English Adaptation) Exam

This question bank is an English-language MCQ study adaptation for the WBBSE Class 10 Madhyamik Life Science & Environment examination. It offers comprehensive coverage of plant and animal sensitivity, hormones, nervous system, cell division, reproduction, Mendelian genetics, genetic disorders, evolutionary theories, adaptations, and environmental science including the nitrogen cycle, pollution, biodiversity conservation, and hotspots.

Assessment

Madhyamik Life Science: 90-mark written paper (objective, very-short, short and long answer) plus 10 marks internal assessment, written in a single 3-hour-15-minute sitting.

Time Limit

3 hours 15 minutes (10:45 a.m. to 2:00 p.m., including 15 minutes' reading time)

Passing Score

WBBSE reports each subject on a seven-point grade scale: AA 90-100, A+ 80-89, A 60-79, B+ 45-59, B 35-44, C 25-34 (marginal pass) and D below 25 (disqualified). Grade C is therefore the minimum subject grade and a D in any compulsory subject makes the overall result unsuccessful. Division bands are separate: 1st division 480+, 2nd 360+, 3rd 272+ out of 800.

Exam Fee

WBBSE does not publish a single per-candidate examination fee with the Madhyamik routine. Enrolment is made by the school online through wbbsedata.com within the Board's registration window, and the amount payable is set by the Board's enrolment circular for that session. Confirm the current figure with your school or the Board's notification rather than relying on a quoted estimate. (West Bengal Board of Secondary Education (WBBSE))

WBBSE Madhyamik Life Science (English Adaptation) Exam Content Outline

core

Exam Overview & Syllabus

Overview of the WBBSE Class 10 syllabus structure and assessment pattern.

core

Core Units & Knowledge Areas

Detailed breakdown of primary subject units and learning competencies.

core

Revision & Practice Strategies

Effective study routines, problem-solving methods, and exam strategies.

How to Pass the WBBSE Madhyamik Life Science (English Adaptation) Exam

What You Need to Know

  • Passing score: WBBSE reports each subject on a seven-point grade scale: AA 90-100, A+ 80-89, A 60-79, B+ 45-59, B 35-44, C 25-34 (marginal pass) and D below 25 (disqualified). Grade C is therefore the minimum subject grade and a D in any compulsory subject makes the overall result unsuccessful. Division bands are separate: 1st division 480+, 2nd 360+, 3rd 272+ out of 800.
  • Assessment: Madhyamik Life Science: 90-mark written paper (objective, very-short, short and long answer) plus 10 marks internal assessment, written in a single 3-hour-15-minute sitting.
  • Time limit: 3 hours 15 minutes (10:45 a.m. to 2:00 p.m., including 15 minutes' reading time)
  • Exam fee: WBBSE does not publish a single per-candidate examination fee with the Madhyamik routine. Enrolment is made by the school online through wbbsedata.com within the Board's registration window, and the amount payable is set by the Board's enrolment circular for that session. Confirm the current figure with your school or the Board's notification rather than relying on a quoted estimate.

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

WBBSE Madhyamik Life Science (English Adaptation) Study Tips from Top Performers

1Understand the actions and target sites of plant hormones (auxin, gibberellin, cytokinin) and animal hormones (thyroxine, insulin, adrenaline).
2Master the stages of mitosis and meiosis cell division and their biological significance.
3Practice Mendel's monohybrid and dihybrid cross ratios (genotypic and phenotypic) and pedigree concepts for thalassaemia and haemophilia.
4Review Lamarckism vs. Darwinism theories, alongside anatomical/functional adaptations in camels, pigeons, and sundari plants.
5Study environmental cycles (especially the nitrogen cycle) and key biodiversity hotspots in India (Eastern Himalayas, Indo-Burma, Sundaland, Western Ghats).

Frequently Asked Questions

Is this question bank an official WBBSE publication?

No. This question bank is an English-language MCQ study adaptation based on the official WBBSE Class 10 Madhyamik Life Science and Environment syllabus.

What topics are covered in the Madhyamik Life Science examination?

The exam covers five primary units: Control & Coordination in Living Organisms, Continuity of Life, Heredity & Common Genetic Diseases, Evolution & Adaptation, and Environment, Its Resources & Their Conservation.

What grade does a candidate need to pass a WBBSE Madhyamik subject?

WBBSE grades each subject on a seven-point scale - AA 90-100, A+ 80-89, A 60-79, B+ 45-59, B 35-44, C 25-34 and D below 25. Grade C is the marginal pass, and a D in any compulsory subject makes the whole result unsuccessful. The 34% figure that circulates widely is the third-division band (272 of 800), not the subject pass grade. Check the Board's notification for the rule applying to your sitting.

How are the 100 questions distributed across topics?

The 100 questions are evenly distributed across all 5 major syllabus units (~20 questions per unit), covering plant/animal hormones, cell division, genetics, evolution, and ecology.

What is the difficulty distribution of the questions?

The questions follow a balanced distribution of approximately 30 easy, 50 medium, and 20 hard questions.