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ICSE Class X Sample / Model Paper 2024 : Biology

5 pages, 50 questions, 0 questions with responses, 0 total responses,    1    0
Anshul Jain
Pawar Public School (PPS), Hadapsar, Pune
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Questions Try karke dekto Section-A (Attempt all questions from this Section) Question 1. Choose the correct answers to the questions from the given options. (Do not copy the question, write the correct answer only.): (i) The pigment that gives colour to urine: (a) Haemoglobin (b) Chlorophyll (c) Urochrome (d) Melanin (c) Iris (d) Ciliary muscles ( ) The pigmented circular area seen in front of the eye: (a) Cornea (b) Lens (ii) Select the correct statement: (a) Heterotrophs do not synthesize their own food. (b) Heterotrophs utilise solar energy for photosynthesis. (c) Heterotrophs synthesise their own food. (d) Heterotrophs are capable of converting carbon dioxide and water into carbohydrates. (iv) In a synapse, a chemical signal is transmitted from: (a) Dendriticend of one neuron to the axonal end of another neuron. (b) Axon to the cell body of the same neuron. (c) Cell body to the axonal end of the same neuron. (d) Axonalend of one neuron to the dendriticend of another neuron. (v) A Mendelian experiment consisted of breeding tall pea plants bearing violet flowers with short pea plants bearing white flowers. The progeny all bore violet flowers, but almost half of them were short. This suggests that the genetic makeup of tall parent can be depicted as: (a) TTWW (b) TTww (c) TtWW (d) TtWw (vi) The correct sequence of reproductive stages seen in flowering plants is: (c) Seedling, embryo, zygote, gametes (a) Gametes, zygote, embryo, seedling (b) Zygote, gametes, embryo, seedling (d) Gametes, embryo, zygote, seedling (vii) Assertion (A): Meiosis is necessary for sexual reproduction in organisms. Reason (R):It ensures the halving of the chromosome number in gametes. (a) (b) (c) (d) Both A and R are True. Both A and R are False. A is True and R is False. A is False andR is True. (vii) New species may be formed if: (a) DNA undergoes significant changes in germ cells. (b) Chromosome number dhanges in the gamete. (c) There is no change in the genetic material. (d) Mating does not take place. Which is the (a) Mouth (b) Mouth () Mouth (d) Mouth Which of the (a) correct sequence of parts in the Stomach Small intestine human alimentary canal? -> large intestine Oesophagus Stomach > LargeOesophagus intestine -> Small intestine Stomach Oesophagus Small intestine intestine Oesophagus Stomach Small intestine -s Large Large intestine following groups do not contain only Grass, flower and leather items? biodegradable (c) Fruit-peels, cake and lime-juice (b) Grass, wood and plastic (d) Cake, wood and grass. L Pick the right combination of terms with no fossil fuels. ) (a) Wind, ocean and coal (c) Wind, wood and Sun (b) Kerosene, wind and tide Which of the following groups constitutes a food chain?(d) Petroleum, wood and Sun (a) Grass, wheat and mango (b) Grass, goat and human (c) Goat, cow and elephant (d) Grass, fish and goat i) The disappearance of spindle and uncoiling of chromosomes takes place: (a) Anaphase (b) Telophase () Pachytene kiv) Which of the following is a harmful effect of noise pollution? (a) Increased concentration and focus (d) Meiosis (c) Hearing loss (b) Improved sleep quality (d) Enhanced communication skills (xv) Which of the following is a function of phytohormones in plants? (a) Enhancing photosynthetic efficiency (b) Controlling plarnt growth and development (c) Regulating the water content of plant cells (d) Preventing pest infestation Question 2. ) Name the following: (a) Vshaped chromosome having the centromere at the centre. (b) Vein which starts from an organ and ends in another organ besides the heart. (c) Inner region of the kidney, which is light in colour and subdivided into conical renal pyramids. (d) Name the bony box in which the heart is located. (e) The hormone which abnormally increases urine formation. ( ) Arrange and rewrite the terms in each group in the correct order so as to be in alogical sequence beginning with the term that is underlined. (a) Shoot, Root, Apical meristem, Soil (b) callosum, medulla oblongata, thalamus, Cerebrum Corpusventricle, left atrium, right atrium, right ventricle (c) Left (d) Stomach, buccal cavity duodenum. oesophagus e) Metaphase, telophase, anaphase, prophase (ii) Fill in the blanks with suitable words: (b) in 1902. The term (a). and was proposed by The theory of inheritance is the hereditary unit. In mammals, the (c)in 1906. (d). was introduced by female is homozygous while the male is (e) v) ChoOse the odd one out from the followingterms and name the category to which the others belong Genetchromosomal ics (a) Gernes, Chromosomes, Alleles, Ovule. RBC, ATP,WBC, Platelets. Potassium nitrate. (c) (d) (e) Azotobacter, Azospirillum, RhiProgestin, z obi u m, Condomns, IUD, Cervical caps. Ovum, Corpus luteum, Scrotal sacs, Ovary. ones in column II and r (v) Match the items given in column I withthe most appropriate matching pairs. rewrite the correct Column II Column I molecules of perfume spread in the (1) The process by which the when the bottle is open. (b) Heart attack (2) Twelve pairs of nerves. (3) Chromosomes become arranged in a horizontal plane at the equator., (c) Renal artery (a) Cranial nerves(4) That brings waste filled- blood from the aorta to the kidney. (a) Metaphase (e) Diffusion room (5) Blocking of coronary artery. Section-B (Atempt any four questions from this section) Question 3. (i) Define Leptotene. (1) Do genetic combinations of mothers play asignificant role in determining the sex of anew borm? (ii1) What is transpiration? List its two functions. (iv) What are plant hormones? (V) Study the diagram below and answer the questions that follow: (a) (a) Name the diagram labelled as (a). (b) (c) (b) Name the diagram labelled as (b). (c) Name the diagram labelled as (c). Question 4. (i) Expand the abbreviation - ATP. (ii) Name any two nitrogenous bases. (iii) Answer the following: (a) What is the scientific name of the pea plant? (b) Name two genetic diseases in humans. (iv) Give appropriate terms for each of the following: (a) Rupture of follicle and release of ovum from the ovary. (b) The onset of the reproductive phase in ayoung female. (v) The diagram below represents an experiment conducted to prove the importance of a factor in photosynthesis. Study the same and then answer the questions that follow: Black Paper Clip' factor (a) Name thethe Why was What will we Qurstlon5. What do you being studied in plant kept in a dark this roomexpermet. before the experiert observe in the experiment leaf at conducting, the end of the starch test? mean by phosphorylation? Differentiate between the 8 following pairs on the basts of what is indicated in fhe la) Leaf and Liver [form in which (b) Hypotonic solution and glucose is stored) bracketsc for theHypertonic solution fcondition of planttcell when placed in hen following (a) Study of the size and shape of on achart. chromosomes (b) The process by which WBCs squeeze out of the blood capillaries. Name the following: The fluid which surrounds the human foetus to protect it from mechanical ) Waste material that can be broken down to non-poisonous substances. shocks. w Given below is the diagram of a cell as seen under the microscope after having been placed in a certain solution : ) Give the technical term 1 2 3 (a) What isthe technical term used for the state/condition of the cell given above? (b) Give the technical term for the solution in which the cell was placed. () Name the parts numbered 1 to 4. Question 6. ) Define Natality. () Differentiate between Binary fission and Multiple fission. (i) Differentiate between the following pairs based on their functions: (b) Sensory neuron and motor neuron. ) Corpus callosum and corpus luteum. ) Briefly answer the following questions: (a) What is root (b) Mention one use of turgidity. pressure? tall plant bearing red flowers is crossed with arecessive homozygous ) fa dominant homozygous of the F, plants which are self-pollinated. and wart plant bearing white flowers. Draw a diagram write the genotype and phenotype of theresulting E, generation. Ques0)tion wastes. ) Define Biodegradable the questions: followingreaction (a) of photosynthesis, which substanceis the raw material and the product? AnswerIn the chemical a spinal injury? (b) Which kind of signal will get disrupted in case of ) Give reasons: (a) (b) Why does-biodegradable the leaf? appearsubstances green? persist in the environmentfor: alonger time? Why non livy Diferentiate between the following pairs onthe basis of what is indicated in the brackets: ATP and IAA |Abbreviations). (b) Ureter and Urethra (Functions). (v) Given below is a diagram Studythe same and answer eye. human a of depicting adefect the that follow: queston (a) Name the parts labelled 1 -4. (b) Name the defect and the lens used to correct the eye defect. the lens named by you above. (c) Draw a diagram to show how this defect is corrected by Question 8 i) Define Cerebrospinal fluid. (ii) Give technical terms for the following: (a) Across between two pairs of contrasting characters. (b) Aprocess by which WBCs move out of the capillary walls. (i i) Name the following: (a) The compound that turns into acid and causes acid rain (b) The rate at which the deaths occur (iv) Answer the following questions: (a) Where are sperms produced? (b) Name the accessory glands found in the human male reproductive system. Give their functions also. (v) Sketch and label the V. S. of pituitary gland.

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