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