CBSE Class 9 Biology Fundamental Unit Of Life Worksheet Set 03

Question: Which out of the following is not a function of vacuole?
a) Storage
b) Providing turgidity and rigidity to the cell
c) Waste excretion
d) Locomotion
Answer: d

Question: Amoeba acquires its food through a process, termed
a) exocytosis
b) endocytosis
c) plasmolysis
d) exocytosis and endocytosis both
Answer: b

Question: The proteins and lipids, essential for building the cell membrane, are manufactured by
a) rough endoplasmic reticulum
b) golgi apparatus
c) plasma membrane
d) mitochondria
Answer: a

Question: Plasmolysis in a plant cell is defined as
a) break down (lysis) of plasma membrane in hypotonic medium
b) shrinkage of cytoplasm in hypertonic medium
c) shrinkage of nucleoplasm
d) none of them
Answer: b

Question: Which of the following are covered by a single membrane?
a) Mitochondria
b) Vacuole
c) Lysosome
d) Plastid
Answer: b

Question: Cell wall of which one of these is not made up of cellulose?
a) Bacteria
b) Hydrilla
c) Mango tree
d) Cactus
Answer: a

Question: Find out the false sentences
a) Golgi apparatus is involved with the formation of lysosomes
b) Nucleus, mitochondria and plastid have DNA; hence they are able to make their own structural proteins
c) Mitochondria is said to be the power house of the cell as ATP is generated in them.
d) Cytoplasm is called as protoplasm
Answer: a

Question: Chromosomes are made up of
a) DNA
b) protein
c) DNA and protein
d) RNA
Answer: c

Question: Organelle other than nucleus, containing DNA is
a) endoplasmic reticulum
b) golgi apparatus
c) mitochondria
d) lysosome
Answer: c

Question: The undefined nuclear region of prokaryotes are also known as
a) nucleus
b) nucleolus
c) nucleic acid
d) nucleoid
Answer: d

Question: Which of the following can be made into crystal?
a) A Bacterium
b) An Amoeba
c) A Virus
d) A Sperm
Answer: c

Question: Which of these is not related to endoplasmic reticulum?
a) It behaves as transport channel for proteins between nucleus and cytoplasm
b) It transports materials between various regions in cytoplasm
c) It can be the site of energy generation
d) It can be the site for some biochemical activities of the cell
Answer: c

Question: Silver nitrate solution is used to study
a) endoplasmic reticulum
b) golgi apparatus
c) nucleus
d) mitochondria
Answer: b

Question: The cell organelle involved in forming complex sugars from simple sugars are
a) endoplasmic reticulum
b) ribosomes
c) plastids
d) golgi apparatus
Answer: d

Question: Following are a few definitions of osmosis. Read carefully and select the correct definition
a) Movement of water molecules from a region of higher concentration to a region of lower concentration through a semipermeable membrane
b) Movement of solvent molecules from its higher concentration to lower concentration
c) Movement of solvent molecules from higher concentration to lower concentration of solution through a permeable membrane
d) Movement of solute molecules from lower concentration to higher concentration of solution through a semipermeable membrane
Answer: a

Question: Which cell organelle plays a crucial role in detoxifying many poisons and drugs in a cell?
a) Golgi apparatus
b) Lysosomes
c) Smooth endoplasmic reticulum
d) Vacuoles
Answer: c

Question: A cell will swell up if
a) The concentration of water molecules in the cell is higher than the concentration of water molecules in surrounding medium
b) The concentration of water molecules in surrounding medium is higher than water molecules concentration in the cell
c) The concentration of water molecules is same in the cell and in the surrounding medium
d) Concentration of water molecules does not matter
Answer: b

Question: Find out the correct sentence
a) Enzymes packed in Lysosomes are made through RER (rough endoplasmic reticulum)
b) Rough endoplasmic reticulum and smooth endoplasmic reticulum produce lipid and protein respectively
c) Endoplasmic reticulum is related with the destruction of plasma membrane
d) Nucleoid is present inside the nucleoplasm of eukaryotic nucleus
Answer: a

Question: Cell arises from pre-existing cell was stated by
a) Haeckel
b) Virchow
c) Hooke
d) Schleiden
Answer: b

Question: Living cells were discovered by
a) Robert Hooke
b) Purkinje
c) Leeuwenhoek
d) Robert Brown
Answer: c

Question: Lysosome arises from
a) endoplasmic reticulum
b) golgi apparatus
c) nucleus
d) mitochondria
Answer: b

Question: Lipid molecules in the cell are synthesized by
a) smooth endoplasmic reticulum
b) rough endoplasmic reticulum
c) golgi apparatus
d) plastids
Answer: a

Question: Cell theory was given by
a) Schleiden and Schwann
b) Virchow
c) Hooke
d) Haeckel
Answer: a

Question: The only cell organelle seen in prokaryotic cell is
a) mitochondria
b) ribosomes
c) plastids
d) lysosomes
Answer: b

Question: Select the odd one out
a) The movement of water across a semipermeable membrane is affected by the amount of substances dissolved in it.
b) Membranes are made of organic molecules like proteins and lipids
c) Molecules soluble in organic solvents can easily pass through the membrane.
d) Plasma membranes contain chitin sugar in plants
Answer: d

Question: Organelle without a cell membrane is
a) ribosome
b) golgi apparatus
c) chloroplast
d) nucleus
Answer: a

Question: 1 μm is
a) 10⁻⁶ m
b) 10⁻⁹ m
c) 10⁻¹⁰ m
d) 10⁻³ m
Answer: a

Question: Kitchen of the cell is
a) mitochondria
b) endoplasmic reticulum
c) chloroplast
d) golgi apparatus
Answer: c

Question: Which of these options are not a function of Ribosomes?
(i) It helps in manufacture of protein molecules
(ii) It helps in manufacture of enzymes
(iii) It helps in manufacture of hormones
(iv) It helps in manufacture of starch molecules
(a) (i) and (ii)
(b) (ii) and (iii)
(c) (iii) and (iv)
(d) (iv) and (i)
Answer: c

Name the organelles which show the analogy written as under

Question: Transporting channels of the cell __________
Answer: Endoplasmic reticulum

Question: Power house of the cell __________
Answer: Mitochondria

Question: Packaging and dispatching unit of the cell __________
Answer: Golgi body

Question: Digestive bag of the cell __________
Answer: Lysosome

Question: Storage sacs of the cell __________
Answer: Vacuole

Question: Kitchen of the cell __________
Answer: Chloroplast

Question: Control room of the cell __________
Answer: Nucleus

In brief state what happens when

Question: dry apricots are left for sometime in pure water and later transferred to sugar solution?
Answer: First it swells due to endosmosis and then exosmosis occurs and it shrinks.

Question: a Red Blood Cell is kept in concentrated saline solution?
Answer: It will lose water and shrink.

Question: the Plasma-membrane of a cell breaks down?
Answer: The cell will die.

Question: rheo leaves are boiled in water first and then a drop of sugar syrup is put on it?
Answer: The cell gets killed on boiling so no plasmolysis.

Question: golgi apparatus is removed from the cell?
Answer: All sorts of vesicle formation stop.

Question: Name any cell organelle which is non membranous.
Answer: Ribosome