ICSE Class 10 Biology Guess Paper 2027

What does Swachh Bharat Abhiyan aim to achieve in India? (a) Increase in deforestation to dump waste. (b) Expansion of landfill areas to accommodate more waste. (c) Improved sanitation and solid waste management. (d) Greater industrial waste production.

Choose the ODD term out and mention the category to which the remaining three belong: Wisdom tooth, Pinna, Tongue, Vermiform appendix.

The onset of menstruation in a human female is called: (a) Menopause (b) Menarche (c) Ovulation (d) Oogenesis

Root hairs are epidermal outgrowths well suited for absorption of water due to: P - Large surface area, Q - Lower concentration of cell sap, R - Higher concentration of cell sap, S - Freely permeable cell membrane. (a) P and S (b) Q and S (c) P and R (d) R and S

Assertion (A): Rods and Cones are photoreceptors in the sclera of eyeball. Reason (R): Rods are sensitive to dim light. (a) A is True and R is False. (b) A is False and R is True. (c) Both A and R are True. (d) Both A and R are False.

Explain the term Natality.

Industrial melanism is the phenomenon by which the peppered moth: (a) die due to industrial growth. (b) in polluted areas, became darker in colour for better camouflage. (c) became lighter in colour due to natural selection. (d) became resistant to industrial pollution.

Meena's mother prepared a cucumber salad garnished with salt and pepper. After some time a lot of water accumulated in the salad bowl. The cucumber slices underwent: (a) active transport (b) transpiration (c) exosmosis (d) endosmosis

Name the following: The statistical study of human population.

The Loops of Henle lie in: (a) Renal Cortex (b) Renal Medulla (c) Renal Pelvis (d) Renal Artery

Reena gets emotionally stressed when the school examinations are approaching. Which hormone is responsible for this condition? (a) Adrenaline (b) Thyroxine (c) Insulin (d) Growth hormone

The path of blood flow during pulmonary circulation is: (a) Right auricle, Right ventricle, Pulmonary artery, Lungs, Pulmonary veins, Left auricle. (b) Left auricle, Left ventricle, Pulmonary veins, Lungs, Pulmonary artery, Right auricle. (c) Left auricle, Left ventricle, Aorta, Tissues, Vena cava, Right auricle. (d) Right auricle, Right ventricle, Pulmonary veins, Lungs, Pulmonary artery, Left auricle.

The process in which water is lost from the margins of strawberry leaves is: (a) Osmosis (b) Imbibition (c) Diffusion (d) Guttation

Give the biological/technical term: The ground substance present in a chloroplast.

The number of autosomes and allosomes present in a human cell: (a) 22 allosomes, 1 autosome (b) 22 pairs of autosomes, 1 pair of allosome (c) 22 autosomes, 1 allosome (d) 22 pairs of allosomes, 1 pair of autosome

Write the balanced equation for photosynthesis. Name the mineral element essential for the formation of chlorophyll.

State Mendel's Law of Segregation of gametes.

Explain how the process (transpiration) will differ on a rainy day.

Which hormone is responsible for this disorder (adrenal virilism)? Name the gland which secretes this hormone.

Explain the conclusion drawn from this experiment after the iodine test.

Mention two reasons for population explosion in India.

Two well-watered identical plants were placed in brightly lit rooms, one at 15 C and the other at 38 C. The plant in the warmer room showed wilting by the end of the day. (a) Which plant phenomenon resulted in the wilting of the leaves? (b) Mention the factor of the phenomenon that is being tested.

Which part of the ear equalizes air pressure on either side of the ear drum? Where is this structure located?

Study the picture (waste bin with gloves, syringes, tablets). (a) Name the category of waste that is being disposed. (b) Give an example of such a waste. (c) Are they hazardous to humans and animals? Give a suitable reason to justify your answer.

Study the diagram (potted plant bending towards sunlight). (a) Name the phenomenon depicted by the shoot. (b) Which plant hormone plays an important role in the above movement? (c) Name one stimulus which gives a positive response for the roots but negative response for the shoot.

Tara's 70-year-old grandmother faces difficulty threading a needle as its eye appears blurred; diagnosed as an age-related disorder. (a) Name the eye disorder she is suffering from. (b) How can the above defect be corrected? (c) Where is the image formed in the above disorder?

Diagram of a human sperm. Fill in the blanks: The head has a cap-like organelle called (a) ______ (Lysosome/Acrosome) which produces an enzyme (b) ______ (Hyaluronidase/Amylase) that dissolves the outer layer of the ovum. The nucleus has (c) ______ (23/46) chromosomes. The middle piece has (d) ______ (Chloroplast/Mitochondria) to provide energy for motility. (e) ______ (Semen/Hymen) is a mixture of sperms and fluids produced by the male accessory glands.

List three adaptations in plants to reduce this process (transpiration).

Diagram of human blood smear. (a) Mention one structural difference between 1 and 2. (b) What is the function of part 3? (c) Name the part labelled 4.

Cross section of the human eye. Match the structures marked (a) to (e) with their correct functions: Functions - 1. Protects retina 2. Regulates the size of the pupil 3. Alters the shape of the lens 4. Keeps the lens moist 5. Transmits nerve impulses to brain 6. Holds the lens in position.

Draw a neat, labelled diagram of an animal cell having 4 chromosomes in the metaphase stage.

Draw a neat, labelled diagram of a cross section of an Artery and a Vein.

For the past few years there has been irregular rainfall, leading to crop failures and water shortages. This is a result of: (a) climate change (b) soil erosion (c) earth rotation (d) acid rain

Diagram of a human heart. Fill in the blanks: The heart is enclosed by a membrane called (a) ______ (Pericardium/Pleura). The ventricles give rise to two large blood vessels called (b) ______ (Pulmonary vein/Pulmonary artery) and (c) ______ (Aorta/Venacava). The flaps of the cuspid valves are kept in position by (d) ______ (Chordae tendinae/Endometrium). (e) ______ (Hepatic/Coronary) arteries supply oxygenated blood to the walls of the heart.

Copy the diagram (transverse section of spinal cord). (a) Name the structure. (b) Label Gray matter and White matter.

Ayush was focussing intently on the strokes of the opponent player in a carrom match. (a) Which part of the brain helps Ayush to focus on the game? (b) Name the part of the brain that co-ordinates his muscles while using the striker.