BioNotesClass VIII Biology Annual Practice Paper 2026-27 - Question Paper
Annual examination practice question paper (80 marks, two hours) for Class VIII Biology, prepared on the school blueprint.
Class IX Biology Annual Practice Paper 2026-27 - Question Paper
Annual examination practice question paper (80 marks, two hours) for Class IX Biology, prepared on the school blueprint.
Created by Titas Mallick
Biology Teacher • M.Sc. Botany • B.Ed. • CTET (CBSE) • CISCE Examiner
Online
Marking scheme and model answers for the Class IX Biology annual practice paper, 2026-27.
Marking Guidelines
Marks are awarded point-wise, in the manner of CISCE step-marking. Alternative correct answers in the student's own words should be accepted.
| Q | Answer | Q | Answer | Q | Answer |
|---|---|---|---|---|---|
| (i) | (c) lysosome | (vi) | (b) maize | (xi) | (c) 12 |
| (ii) | (c) Both true, R correct explanation | (vii) | (b) lactic acid | (xii) | (b) starch into maltose |
| (iii) | (c) sclerenchyma | (viii) | (c) chitin | (xiii) | (c) pivot joint |
| (iv) | (b) bisexual | (ix) | (b) nitrifying bacteria | (xiv) | (c) Both true, R correct explanation |
| (v) | (b) the two polar nuclei | (x) | (a) goitre | (xv) | (b) particulate matter from smoke |
Working note: (xi) An adult has 3 molars on each side of each jaw: 3 × 4 = 12.
(i) [5 × 1]
(a) Mitochondria
(b) Phloem
(c) Ovary
(d) Peristalsis
(e) Marasmus
(ii) [5 × 1]
(a) Glucose, pyruvic acid, Krebs cycle, carbon dioxide and water
(b) Pollination, germination of pollen grain, pollen tube formation, fertilisation
(c) Ingestion, digestion, absorption, assimilation
(d) Atmospheric nitrogen, ammonia, nitrites, nitrates
(e) Nasal cavity, pharynx, larynx, trachea, bronchus
(iii) [5 × 1]
Lysosomes – (c); Sclerenchyma – (e); Plumule – (b); Pepsin – (d); Kwashiorkor – (a).
(iv) [5 × 1] (½ mark for odd one out + ½ mark for category)
| Odd one out | Category of the remaining three | |
|---|---|---|
| (a) | Monera | Divisions of the plant kingdom |
| (b) | Malaria | Bacterial diseases |
| (c) | Thyroid gland | Special derivatives (appendages) of the skin |
| (d) | Skull sutures | Freely movable joints |
| (e) | Vegetable peels | Non-biodegradable wastes |
(v) [5 × 1]
(a) triple fusion
(b) scurvy
(c) intercostal
(d) cytoplasm
(e) primary
(i) [1] Schleiden and Schwann.
(ii) [2] (any two) It controls all the activities of the cell; it contains the chromosomes (DNA) that carry hereditary information; it controls cell division.
(iii) [2] (any two)
| Prokaryotic cell | Eukaryotic cell |
|---|---|
| Nucleus absent; DNA lies free in the cytoplasm (nucleoid) | True nucleus with a nuclear membrane |
| Membrane-bound organelles absent | Membrane-bound organelles present |
| Ribosomes small | Ribosomes larger |
(iv) [2] (any two)
| Xylem | Phloem |
|---|---|
| Conducts water and minerals | Conducts prepared food |
| Conduction is upward only | Conduction is in both directions |
| Mostly dead cells (except xylem parenchyma) | Mostly living cells |
www.bionotes.in(v) [3] (any three)
| Plant cell | Animal cell |
|---|---|
| Cell wall present | Cell wall absent |
| Plastids present | Plastids absent |
| Large central vacuole | Vacuoles small and temporary |
| Centrosome absent | Centrosome present |
www.bionotes.in(i) [1] Corolla.
www.bionotes.in(ii) [2] A complete flower has all four whorls (calyx, corolla, androecium, gynoecium), e.g. hibiscus / china rose [1]; an incomplete flower lacks one or more whorls, e.g. cucumber / papaya / maize [1].
(iii) [2] (any two) Produces more variation among the offspring; offspring are healthier and better adapted to the environment; seeds are more viable; helps in the evolution of new varieties.
(iv) [2] Triple fusion is the fusion of one male gamete with the two polar nuclei in the embryo sac to form the triploid primary endosperm nucleus [1]. Significance: the endosperm formed provides nutrition to the developing embryo [1].
(v) [3] (any three) Flowers are large and brightly coloured; have scent; produce nectar; pollen grains are sticky/spiny; stigma is sticky and often inside the flower.
(i) [1] Epigeal germination.
(ii) [2] (any two)
| Monocot seed (maize) | Dicot seed (bean) |
|---|---|
| One cotyledon (scutellum) | Two cotyledons |
| Endosperm is present (albuminous) | Endosperm is absent in the mature seed (non-albuminous) |
| Coleoptile and coleorhiza present | Coleoptile and coleorhiza absent |
| Seed coat fused with the fruit wall | Seed coat is separate and distinct |
www.bionotes.in(iii) [2] Any two: water, oxygen (air), suitable temperature [1 each].
(iv) [2] C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + energy (correct reactants and products 1½ marks; balancing ½ mark).
(v) [3] (any three)
| Aerobic respiration | Anaerobic respiration |
|---|---|
| Occurs in the presence of oxygen | Occurs in the absence of oxygen |
| Glucose is completely oxidised | Glucose is partly broken down |
| Products: CO₂ and water | Products: alcohol and CO₂ (plants/yeast) or lactic acid (animal muscle) |
| Large amount of energy released | Small amount of energy released |
(i) [1] R. H. Whittaker.
(ii) [2] (any two) Eukaryotic organisms; heterotrophic — saprophytic or parasitic; no chlorophyll; cell wall made of chitin; body made of thread-like hyphae forming a mycelium; reproduce by spores.
(iii) [2] (any two) Agriculture: Rhizobium fixes atmospheric nitrogen in the root nodules of legumes. Industry: Lactobacillus converts milk into curd; production of antibiotics; curing of tea and tanning of leather.
www.bionotes.in(iv) [2] Nitrogen-fixing bacteria (e.g. Rhizobium, Azotobacter) convert atmospheric nitrogen into ammonia/nitrates [1], which plants can absorb and use to make proteins, thus replenishing the soil nitrogen [1].
www.bionotes.in(v) [3] (any three)
| Kingdom Monera | Kingdom Protista |
|---|---|
| Prokaryotic (no true nucleus) | Eukaryotic (true nucleus present) |
| No membrane-bound organelles | Membrane-bound organelles present |
| Examples: bacteria, blue-green algae | Examples: Amoeba, Paramecium, Euglena |
| Smaller cells | Larger cells |
(i) [1] Rickets.
(ii) [2] A balanced diet contains all the nutrients — carbohydrates, proteins, fats, vitamins, minerals, water and roughage — in the correct proportions [1]. It provides energy, promotes growth and repair of tissues and prevents deficiency diseases [1].
(iii) [2]
| Kwashiorkor | Marasmus |
|---|---|
| Caused by deficiency of protein | Caused by deficiency of both proteins and calories |
| Swollen belly and limbs (oedema) | Very thin, shrivelled body with wasted muscles |
(iv) [2] (a) Incisors cut and bite food [1]; (b) Molars crush and grind food [1].
www.bionotes.in(v) [3] Liver: secretes bile, which emulsifies fats [1]. Pancreas: secretes pancreatic juice [1] containing amylase (starch), trypsin (proteins) and lipase (fats) [1].
www.bionotes.in(i) [1] Intercostal muscles.
www.bionotes.in(ii) [2] When the body is hot, the blood vessels in the skin dilate (vasodilation) and sweat glands produce sweat, which evaporates and cools the body [1]. When the body is cold, the blood vessels constrict (vasoconstriction), which reduces the loss of heat [1].
www.bionotes.in(iii) [2]
| Antiseptic | Disinfectant |
|---|---|
| Applied on living tissues (skin, wounds) | Applied on non-living objects (floors, drains, toilets) |
| Mild, so it does not harm tissues | Strong, so it can harm living tissues |
| Example: Dettol, tincture of iodine | Example: phenol, bleaching powder |
(iv) [2] (any two) Gives support and shape to the body; protects delicate organs (brain, heart, lungs); helps in movement by providing attachment to muscles; produces blood cells (bone marrow); stores minerals (calcium and phosphorus).
www.bionotes.in(v) [3] (any three) Segregation of waste at source; composting of biodegradable waste; incineration; dumping in landfills; treatment of effluents before discharge; sewage treatment; use of scrubbers and electrostatic precipitators for industrial gases.
Class VIII Biology Annual Practice Paper 2026-27 - Question Paper
Annual examination practice question paper (80 marks, two hours) for Class VIII Biology, prepared on the school blueprint.
Class IX Biology Annual Practice Paper 2026-27 - Question Paper
Annual examination practice question paper (80 marks, two hours) for Class IX Biology, prepared on the school blueprint.