CBSE Class 9 Science The Fundamental Unit of Life MCQs

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..Animal cell lacking nuclei would also lack in
(a) Endoplasmic reticulum
(b) Chromosome
(c) Lysosome
(d) Ribosome

Answer :   B

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

Answer :   B

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

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. 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.

Answer :   C

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

Answer :    D

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. 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

Answer :   A

Question. The primary function of smooth endoplasmic reticulum in liver cells is
(a) protein synthesis
(b) catabolism of proteins
(c) detoxification
(d) carbohydrate metabolism

Answer :   C

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.

Answer :   D 

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

Answer : C

Question. Cell membrane engulfed food from its external environment called
(a) Reverse Osmosis
(b) Diffusion
(c) Endocytosis
(d) Circulation

Answer : C

Question. Human body is originated from……………
(a) mother
(b) Stomach of mother
(c) Single cell
(d) None of them

Answer : C

Question. Priya Is Writing Some Statements, Choose The Correct Statement And Help Him:
(a) Lysosomes serve as intracellular digestive system so it is as called digestive bags.
(b) Lysosomes are also known as suicide bags of the cell and works as a kind of garbage disposal system.
(c) During the transformation of a tadpole into frog, the embryonic tissues such as gills and tail are digested by the lysosomes and utilized by other body cells.
(d) All the above

Answer : D

Question. …………………….. is allows or permits the entry and exit of some material in and out of the cell
(a) Cell envelope
(b) Cell cover
(c) Cell membrane
(d) Cell protector

Answer : C

Question. ……………………. Is a complex substance and provides structural strength to plant
(a) Cellulose
(b) Carbohydrates
(c) Minerals
(d) Lipids

Answer : A

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

Answer : B

Question. ………………Is not multicellular organism
(a) Human
(b) Plant
(c) Amoeba
(d) Cactus

Answer : C

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 : B

Question. Rod shaped structure present in nucleus called………….
(a) Cytoplasm
(b) Vacuole
(c) Proteins
(d) Chromosomes

Answer : D

Question. White or colorless plastids known as……………
(a) Plasmodium
(b) Plastid
(c) Chloroplast
(d) Leucoplast

Answer : D

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

Answer : B

Question. The cell is swell up by ……………… solution
(a) Hypertonic solution
(b) Hypotonic solution
(c) Isotonic solution
(d) None of them

Answer : B

Question. Nucleus plays vital role in cellular ……………
(a) Circulation
(b) Transportation
(c) Reproduction
(d) Digestion

Answer : C

Question. Fluid content present in cell called………….
(a) Cytoplasm
(b) Vacuole
(c) Proteins
(d) Chromosomes

Answer : A