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