LIWA

Introducing Biology

ICSE Class 9 · Biology · Chapter 1

What this chapter covers

Past board exam questions

ICSE 2019 sample paper · 5 marks

Name the following: (i) The region of the axis between the point of attachment of cotyledons and the plumule. (ii) The undigested cellulose which is fibrous in nature. (iii) A vaccine for Poliomyelitis. (iv) A large hole at the back of the cranium through which the spinal cord passes. (v) A serious food poisoning disease caused due to a bacterium in tinned foods.

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(i) Epicotyl (ii) Roughage (dietary fibre) (iii) OPV – Oral Polio Vaccine (Sabin vaccine); IPV (Salk vaccine) is also correct. (iv) Foramen magnum (v) Botulism

ICSE 2019 sample paper · 5 marks

Given below are sets of five terms each. Rewrite the terms in correct order in a logical sequence beginning with the term that is underlined. (i) Sacrum, Thoracic, Coccyx, <u>Cervical</u>, Lumbar (ii) Larynx, Pharynx, Bronchioles, <u>Nostrils</u>, Alveoli (iii) Pollen tube, Stigma, Ovary, <u>Pollen grain</u>, Embryo sac. (iv) Rectum, <u>Pharynx</u>, Oesophagus, Duodenum, Stomach (v) Nuclear membrane, <u>Cell wall</u>, Cytoplasm, Nucleolus, Cell membrane

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(i) Cervical → Thoracic → Lumbar → Sacrum → Coccyx (ii) Nostrils → Pharynx → Larynx → Bronchioles → Alveoli (iii) Pollen grain → Stigma → Pollen tube → Ovary → Embryo sac (iv) Pharynx → Oesophagus → Stomach → Duodenum → Rectum (v) Cell wall → Cell membrane → Cytoplasm → Nuclear membrane → Nucleolus

ICSE 2019 sample paper · 5 marks

Differentiate between the following pairs on the basis of what is given in the brackets: (i) Tendon and Ligament (function) (ii) Parotid gland and Sublingual gland (location) (iii) Tidal volume and Residual volume (volume of air) (iv) Leucoderma and Albinism (type of disorder) (v) Epidemic disease and Endemic disease (Example)

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(i) Tendon: connects a muscle to a bone. Ligament: connects a bone to another bone at a joint. (ii) Parotid gland: just below and in front of each ear. Sublingual gland: below the tongue, in the floor of the mouth. (iii) Tidal volume: about 500 mL of air breathed in or out in one normal breath. Residual volume: about 1500 mL of air that always remains in the lungs even after a forceful expiration. (iv) Leucoderma: an acquired, non-hereditary (autoimmune) disorder in which white patches appear on the skin due to loss of pigment. Albinism: a genetic (hereditary) disorder in which melanin is absent from birth in the skin, hair and eyes. (v) Epidemic disease: cholera (or plague, influenza). …

ICSE 2019 sample paper · 5 marks

Mention the exact location of the following: (i) Pancreas (ii) Ovules (iii) Centrosome (iv) Sternum (v) Ceruminous glands

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(i) Pancreas: in the abdomen, lying in the loop (curve) of the duodenum, below and behind the stomach. (ii) Ovules: inside the ovary of the flower, attached to the placenta. (iii) Centrosome: in the cytoplasm of an animal cell, close to the nucleus. (iv) Sternum: in the middle of the front (ventral side) of the chest, to which the ribs are attached. (v) Ceruminous glands: in the skin lining the external auditory canal of the ear.

ICSE 2019 sample paper · 5 marks

Match the items given in Column A with the most appropriate ones in Column B and rewrite the correct matching pairs. | Column A | Column B | |---|---| | (i) Patella | (a) Maize flowers | | (ii) Adult man | (b) Plasmodium | | (iii) e-waste | (c) Knee joint | | (iv) Anemophilous | (d) Plastic | | (v) Malaria | (e) 16 teeth in each jaw | | | (f) Mobile batteries | | | (g) Elbow joint | | | (h) 14 teeth in each jaw |

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(i) Patella – (c) Knee joint (ii) Adult man – (e) 16 teeth in each jaw (iii) e-waste – (f) Mobile batteries (iv) Anemophilous – (a) Maize flowers (v) Malaria – (b) Plasmodium

ICSE 2019 sample paper · 5 marks

Choose the ODD one out from the following terms given and name the CATEGORY to which the others belong: (i) Carbolic acid, Boric acid, DDT, Benzoic acid (ii) Hepatitis, Cholera, Chicken pox, AIDS. (iii) Vegetable peel, Syringes, CDs, Styrofoam. (iv) Shark, Dogfish, Starfish, Trout (v) Gram seed, Pea seed, Rice, Bean Seed

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(i) Odd one: DDT. Category: antiseptics (the others are antiseptic/disinfectant chemicals; DDT is an insecticide). (ii) Odd one: Cholera. Category: viral diseases. (iii) Odd one: Vegetable peel. Category: non-biodegradable wastes. (iv) Odd one: Starfish. Category: fishes (Pisces). (v) Odd one: Rice. Category: dicotyledonous seeds.

ICSE 2019 sample paper · 5 marks

Give appropriate biological / technical terms for the following: (i) The mode of arrangement of flowers on the axis of the plant. (ii) The type of waste generated in hospitals and pathological laboratories. (iii) Different timings of maturation of androecium and gynoecium. (iv) The process of formation of a seedling from the embryo. (v) The energy currency of the cell. (vi) The category of immunity required in the treatment of a snake bite. (vii) The outermost covering of a vacuole. (viii) The membrane that encloses the lungs. (ix) The tissue which stores fat. (x) The device used to remove gaseous and particulate air pollutants.

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(i) Inflorescence (ii) Biomedical waste (iii) Dichogamy (iv) Germination (v) ATP (Adenosine triphosphate) (vi) Artificially acquired passive immunity (antivenom serum) (vii) Tonoplast (viii) Pleura (pleural membrane) (ix) Adipose tissue (x) Scrubber (wet scrubber)