Ncert – class 9- science-Chapter 5 – The Fundamental Unit of Life Welcome to your Ncert - class 9- science-Chapter 5 – The Fundamental Unit of Life 1. Match column I with column II and select the correct answer using the codes given below: Column IColumn II(A) Amoeba, Paramoecium,Chlamydomonas (p) Lysosomes(B) Protoplasm(q) Unicellular organisms(C) Suicide bags of a cell(r) Purkinje in 1839(D) Chromatin material and nucleolus(s) Schleiden and Schwann(E) Cell theory(t) Nucleus (A)→r,(B)→q,(C)→p,(D)→t,(E)→s (A)→q,(B)→p,(C)→r,(D)→t,(E)→s (A)→q,(B)→r,(C)→p,(D)→s,(E)→t (A)→q,(B)→r,(C)→p,(D)→t,(E)→s None 2. Water molecules move from their ______ concentration to their ______ concentration during osmosis. Higher, lower Higher, isotonic Isotonic, higher Lower, higher None 3. How do substances like carbon dioxide (CO2 ) and water (H2O) move in and out of the cell? Osmosis Diffusion and osmosis Active transport Facilitated diffusion and diffusion None 4. The fact that nucleus possessed the ability to control phenotype was first determined by Experiments with bacteria that identified DNA polymerase Grafting experiments with Acetabularia Experiments with radiolabelled phages Transformation experiments with Streptococcus pneumoniae None 5. The type of cell division that is essential for reproduction is _______. Both A and B None of these Mitosis Meiosis None 6. If the mother cell cell has 24 chromosomes, the 2 daughter cells formed after mitosis will have ______ chromosomes. 12 36 48 24 None 7. In a plant cell, cytokinesis occurs by Separation of the cytoplasm from the periphery to central region Separation of the cytoplasm throughout the equatorial plane simultaneously Separation of the cytoplasm from cell centre to its periphery Furrowing of cytoplasm from two sides at right angles to the plane of spindle pole None 8. Statement I : All prokaryotes have a cell wall, eukaryotes do not.Statement II : Prokaryotes have a true nucleus, eukaryotes have a primitive nucleus. Both statement I and statement II are false. Both statement I and statement II are true but statement II is not the correct explanation of statement I. Both statement I and statement II are true and statement II is the correct explanation of statement I. Statement I is true but statement II is false. None 9. Movement of ions or molecules against electrochemical gradient is called Pinocytosis Brownican movement Diffusion Active transport None 10. The smallest cell is a _____________ measured between 0.1 to 0.5 micrometre in size. Fungi Bacteria Virus RBC None 11. Match the following correctly. List IList IIA) Rough endoplasmic reticulum1) AmoebaB) Lysosome2) NucleusC) Nucleoid3) BacteriaD) Food vacuoles4)RibosomesE) Chromatin material and nucleolus5) Suicidal bag A- 4, B- 5, C- 3, D- 1, E- 2 A- 5, B- 4, C- 1, D- 2, E- 3 A- 3, B- 2, C- 4, D- 5, E- 1 A- 1, B- 3, C- 5, D- 2, E- 4 None 12. Root hairs absorb water from soil through_______________ Imbibition Diffusion Osmosis All of the above None 13. Name two organelles having their own genetic component. Mitochondria and cell wall Chloroplast and leucoplast Chloroplast and mitochondria Golgi apparatus and cell wall None 14. Which component of a plant cell gives it rigidity and shape? Cell wall Nucleus Cell membrane All of the above None 15. Identifying feature(s) of onion cell under microscope are___________. All of the above Large vacuole Peripheral nucleus Cell wall None 16. Geeta was asked to prepare a temporary mount of onion peel and list the steps. While writing, she wrote the following steps, which may not be in proper sequence. The correct sequence would be(i) Add a few drops of safranin to the watch glass(ii) Cover it with a coverslip(iii) Add a drop of Glycerine(iv) Take out onion peel(v) Place the peel in water in a watch glass(vi) Wash the peel with water and transfer to a clean slide(vii) Remove the extra water from the slide with blotting paper (viii) Examine the slide under a microscope iv, v, iii, ii, i, vii, vi, viii iv, v, i, vi, vii, iii, ii, viii i, ii, iii, iv, v, vii, vi, viii v, iv, i, vii, vi, viii, iii, ii None 17. Name one organelle present in a plant, that can make some of its proteins. None of the above Mitochondria Golgi apparatus Lysosome None 18. Which part of the cell helps the transfer of material from the nucleus to the cytoplasm? DNA Nuclear pores Chromatin fibres None of the above None 19. What is membrane biogenesis? Cell wall formation Process of building cell membrane All of the above Process of forming biological organism None 20. Which of the following is not true about meiosis? None of these 4 daughter cells are formed The daughter cells have twice the number of chromosomes as the mother cell It results in gamete formation None Time's up Please Share This Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Leave a Reply Cancel replyCommentEnter your name or username to commentEnter your email address to commentEnter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.
