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Selina ICSE Solutions for Class 9 Biology Chapter 1 - Introducing Biology Exercise 1 A. MULTIPLE CHOICE TYPE Choose the most appropriate option in the following statements. (a) Paleontology is the study of (i) Embryos (ii) Blood (iii) Classification  (iv) Fossils (b) Clones of animals are being produced through the practice of (i) Genetics  (ii) Ecology  (iii) Embryology  (iv) Biotechnology Solution A. (a) (iv)  Fossils (b) (iv)  Biotechnology B.  VERY SHORT ANSWER TYPE (1) Name the following branches of biology (a) Application of biological processes in technologies (b) Science of growing fruits and vegetables (c) Study of prehistoric forms of life (d) Study of causes of immunity (resistance to or defense against diseases) (e) Study of fishes Solution B.1. (a) Biotechnology (b) Horticulture (c) Palaeontology (d) Immunology (e) Ichthyology (2)

Selina ICSE Solutions for Class 9 Biology Chapter 2 Cell :  The Unit Of Life Exercise 1 A. Multiple Choice Question.      1. Which one of the following cell organelles is correctly matched with its function?                     (a) Ribosomes    Synthesis of proteins          (b) Mitochondria    Secretion of enzymes          (c) Plasma membrane    Freely permeable          (d) Centrosome  Carries genes     2. All life starts as        (a) an egg        (b) a single cell        (c) a gene        (d) a chromosome    3. Which one of the following is found both in the cells of a mango plant and a monkey?         (a) chloroplasts         (b) centrioles         (c) cell wall         (d) cell membrane    4. A plant cell can be identified from an animal cell by the       (a) absence of centrosome        (b) presence  of cell membrane        (c) presence  of vacuoles       (d) none of the above   5. Plant cell has a ce