Class 9 Science MCQ The Fundamental Unit of Life

Question : Who discovered the cell?
(a) Robert Hooke
(b) Leeuwenhoek
(c) Robert Brown
(d) T. Schwann

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

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

Question : Which of the following statement marks as a difference between plant cell and animal cell?
(a) Plant cells have cell wall which animal cells do not.
(b) Plant cells do not have vacuole while animal cells do have.
(c) Plant cells have only cell membrane while animal cells have both cell wall as well as cell membrane.
(d) Plant cells have more plastids while animal cells have few plastids.

Question : In The Last Year Board Examination, Rahul Were Asked A Question Where He Had To Choose The Statement Which Was/Were Correct? Will You Be Able To Answer This Question?
(a) The chromatin material is a thin, thread like intertwined mass of chromosome material and composed of the genetic substance DNA and proteins.
(b) DNA store all the information necessary for the cell to functions to grow and to reproduce further cells of the next generation.
(c) Chromosomes are thread like structures usually present in the nucleus that become visible only during cell division.
(d) All the above.

Question : The cell wall of a plant cell is made up of:
(a) glucose
(b) fructose
(c) protein
(d) cellulose

Question : Engulfing of food materials or foreign bodies by cells like Amoeba is called
(a) diffusion
(b) endocytosis
(c) osmosis
(d) plasmolysis

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

Question : You must have observed that a fruit when unripe is green but it becomes beautifully coloured when ripe. According to you what is the reason behind this colour change.
(a) Chloroplasts change to chromosplasts
(b) Chromosplasts change to chromosomes
(c) Chloroplasts change to chromosomes
(d) Chromosplasts change to chloroplasts

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

Question : Which of the following is known as the ‘Power House’ of a cell?
(a) Nucleus
(b) Golgi Bodies
(c) Ribosome
(d) Mitochondria

Question : Middle lamella occurs:
(a) Inner to primary wall
(b) Inner to secondary wall
(c) Outer to secondary wall
(d) Outer to primary wall

Question : Plasmolysis in a plant cell is defined as
(a) breakdown (lysis) of plasma membrane in hypotonie medium
(b) shrinkageof cytoplasm in hypertonic medium
(c) shrinkage of nucleoplasm
(d) none of them

Question : The process of plasmolysis in plant cell is defined as:
(a) Breakdown of plasma membrane in hypotonic solution.
(b) Shrinkage of cytoplasm in hypertonic medium.
(c) Shrinkage of Nucleoplasm.
(d) None of these.

Question : The Cell Organelle Involved In Forming Complex Sugars From Simple Sugars Are
(a) Endoplasmic reticulum
(b) Ribosomes
(c) Plastids
(d) Golgi apparatus

Question : Which is the longest cell of the human body?
(a) Nerve cell
(b) Liver cell
(c) Kidney cell
(d) Cardiac cell

Question : Cell wall is absent in
(a) Plants
(b) Bacteria
(c) Fungi
(d) Mycoplasma

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

Question : Among the following statements which one is incorrect?
(a) Golgi apparatus is involved with formation of lysosomes.
(b) Nucleus, mitochondria and plastid have DNA, hence they are able to make their own structural proteins.
(c) Lysosomes are called the suicide bags as they eat up their own cells.
(d) Cytoplasm is called known as protoplasm.

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

Question : Who proposed the “Black Reaction”?
(a) Benda
(b) Camillo Golgi
(c) Schleiden
(d) None of them

Question : Nuclei were first discovered by
(a) Strasburger
(b) Fonatana
(c) Robert Brown
(d) Robert Koch

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

Question : The proteins and lipids, essential for building the cell membrane, are manufactured by:
(a) Endoplasmic reticulum
(b) Golgi apparatus
(c) Mitochondria
(d) Peroxisomes

Question : Which of the following are formed in bone marrow?
(a) RBC
(b) Cartilage cell
(c) Blood platelets
(d) Fibres

Question : Golgi apparatus takes part in synthesis of:
(a) Glycolipids
(b) Glycoproteins
(c) Hormones
(d) All the above

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

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

Question : In a cell DNA is found in:
(a) Nucleus, mitochondria and plastid
(b) Nucleus, mitochondria and Golgi body
(c) Mitochondria, Golgi body and plastid
(d) Nucleus, Golgi body and plastid

Question : The kitchen of the cell is:
(a) mitochondria
(b) endoplasmic reticulum
(c) chloroplast
(d) Golgi apparatus

Question : The cell organelle which is involved in the formation of lysosome is
(a) endoplasmic reticulum
(b) vacuole
(c) Golgi body
(d) mitochondria

Question : The fluid in the vacuole of plant cell is known as
(a) tonoplast
(b) cell sap
(c) matrix
(d) stroma