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 the following correctly. List IList IIA) Rough endoplasmic reticulum1) AmoebaB) Lysosome2) NucleusC) Nucleoid3) BacteriaD) Food vacuoles4)RibosomesE) Chromatin material and nucleolus5) Suicidal bag A- 3, B- 2, C- 4, D- 5, E- 1 A- 5, B- 4, C- 1, D- 2, E- 3 A- 1, B- 3, C- 5, D- 2, E- 4 A- 4, B- 5, C- 3, D- 1, E- 2 None 2. 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 true and statement II is the correct explanation of statement I. Statement I is true but statement II is false. 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. None 3. How do substances like carbon dioxide (CO2 ) and water (H2O) move in and out of the cell? Facilitated diffusion and diffusion Diffusion and osmosis Active transport Osmosis None 4. Name two organelles having their own genetic component. Chloroplast and mitochondria Golgi apparatus and cell wall Chloroplast and leucoplast Mitochondria and cell wall None 5. Which part of the cell helps the transfer of material from the nucleus to the cytoplasm? Nuclear pores DNA Chromatin fibres None of the above None 6. The type of cell division that is essential for reproduction is _______. None of these Both A and B Mitosis Meiosis None 7. Which component of a plant cell gives it rigidity and shape? Cell wall Cell membrane Nucleus All of the above None 8. 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)→q,(B)→r,(C)→p,(D)→t,(E)→s (A)→q,(B)→r,(C)→p,(D)→s,(E)→t (A)→q,(B)→p,(C)→r,(D)→t,(E)→s (A)→r,(B)→q,(C)→p,(D)→t,(E)→s None 9. Which of the following is not true about meiosis? 4 daughter cells are formed It results in gamete formation None of these The daughter cells have twice the number of chromosomes as the mother cell None 10. 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, i, vi, vii, iii, ii, viii iv, v, iii, ii, i, vii, vi, viii i, ii, iii, iv, v, vii, vi, viii v, iv, i, vii, vi, viii, iii, ii None 11. Water molecules move from their ______ concentration to their ______ concentration during osmosis. Isotonic, higher Higher, isotonic Higher, lower Lower, higher None 12. In a plant cell, cytokinesis occurs by Separation of the cytoplasm from cell centre to its periphery Separation of the cytoplasm from the periphery to central region Furrowing of cytoplasm from two sides at right angles to the plane of spindle pole Separation of the cytoplasm throughout the equatorial plane simultaneously None 13. What is membrane biogenesis? Process of building cell membrane Cell wall formation Process of forming biological organism All of the above None 14. Name one organelle present in a plant, that can make some of its proteins. Lysosome None of the above Golgi apparatus Mitochondria None 15. The smallest cell is a _____________ measured between 0.1 to 0.5 micrometre in size. Fungi Bacteria Virus RBC None 16. Movement of ions or molecules against electrochemical gradient is called Active transport Diffusion Brownican movement Pinocytosis None 17. Root hairs absorb water from soil through_______________ All of the above Imbibition Diffusion Osmosis None 18. If the mother cell cell has 24 chromosomes, the 2 daughter cells formed after mitosis will have ______ chromosomes. 48 12 24 36 None 19. Identifying feature(s) of onion cell under microscope are___________. Cell wall All of the above Peripheral nucleus Large vacuole None 20. The fact that nucleus possessed the ability to control phenotype was first determined by Experiments with bacteria that identified DNA polymerase Transformation experiments with Streptococcus pneumoniae Grafting experiments with Acetabularia Experiments with radiolabelled phages 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.
