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