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SCIENCE (IX) THE FUNDAMENTAL UNIT OF LIFE |
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MULTIPLE CHOICE QUESTIONS
(MCQs) |
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Who discovered the nucleus of the cell? a. Robert Hooke b. Leeuwenhoek c. Robert Brown d. Purkinje |
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Who coined the term protoplasm? a. Virchow b. Leeuwenhoek c. Purkinje d. Robert Hooke |
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Amoeba acquires its food through a process, termed: a. exocytosis b. endocytosis c. plasmolysis d. Both a. and b. |
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Chromosomes are made up of: a. DNA b. protein c. DNA and protein d. RNA |
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Kitchen of the cell is: a. mitochondria b. chloroplast c. endoplasmic reticulum d. Golgi apparatus |
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Which of the following cell organelle is called suicidal bag of cell?
a. Mitochondria b. Golgi body c. Lysosome d. Cytoplasm |
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Root hair absorbs water from soil through: a. osmosis b. diffusion c. active transport d. endocytosis |
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ASSERTION AND REASON QUESTIONS
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Assertion (A): Plasma membrane allows the entry or exit of selected materials in and out from the cell. Reason (R): Plasma membrane
is a living membrane and is selectively permeable in nature. |
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Assertion (A): The cells
that have membrane bound organelles are called eukaryotic. Reason (R): The cells that
lack membrane bound organelles are called prokaryotic. |
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Assertion (A): The
endoplasmic reticulum which lacks ribosomes is called Smooth Endoplasmic
Reticulum (SER). Reason (R): SER is mainly
involved in protein synthesis. |
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Assertion (A): Cell is
called the structural and functional unit of life. Reason (R): It performs
functions like respiration, obtaining nutrition, clearing of waste material,
or forming new proteins. |
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VERY SHORT ANSWER QUESTIONS |
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12 |
Which of the following organisms lack a nuclear membrane?
Chlamydomonas, mosquito, butterfly, snake, Paramecium. |
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13 |
Name three functional regions of a cell. |
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14 |
Name the following: (i) Suicide bag of a cell. (ii) Kitchen of a cell |
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15 |
Which kind of plastid is more common in: (i) roots of the plant (iii)
flowers and fruits (ii) leaves of the
plant |
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Name the plastids which store starch, oils and protein granules. |
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SHORT ANSWER TYPE QUESTIONS |
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A plant cell is placed in a hypotonic solution. What will happen?
Will the cell burst? Why or why not? |
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Describe the structural features of cell membrane and cell wall. |
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Where are chromosomes located in a cell? What are they composed of ?
What important Information do they contain? |
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20 |
Differentiate between diffusion and osmosis. |
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21 |
Name a cell organelle found only in a plant cell and mention its
various types. |
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22 |
Which organelle is known as the powerhouse of the cell? Write the
functions of it. |
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23 |
Make a labelled diagram of plant and animal cell? |
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LONG ANSWER TYPE QUESTIONS |
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(i) Why does nuclear membrane have pores? (ii) Why do chromosomes contain DNA in the nucleus? (iii) What will happen if the organisation of a cell is damaged due
to certain physical or chemical reasons? |
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(1) What do you mean by cell division? Explain with diagram. (2) What do you mean by karyokinesis? (3) Describe the term cytokinesis. |
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(i) Distinguish between chloroplast and leucoplast with respect to
their pigments and function. (ii) How would(a) a plant cell and (b) an animal cell behave when
placed in hypotonic solution of sodium chloride? Explain giving reason. |
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27 |
(1) Differentiate between prokaryotic and eukaryotic cell. (2) Differentiate between unicellular and multicellular organisms |
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28 |
(i) What is lacking in a virus which makes it dependent on a living
cell to multiply? (ii) Expand RER and SER. Differentiate between their structure and
function. |
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CASE BASED STUDY QUESTIONS |
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29 |
Read the
following passage and answer the following questions: A cell is the basic structural and functional unit
of a living organism, which makes anything alive and is self-sufficient to
carry out all the fundamental functions of an organism. A small organ-like
structure present inside the cell is called a cell organelle. It has a
particular structural makeup and performs a specific function. They
coordinate and function efficiently for the normal functioning of the cell. A
few of them function by providing shape and support, whereas some are
involved in the locomotion and reproduction of a cell. 1. Name the scientist who discovered first living
cell. 2. Why cells have different shapes? 3. What do you mean by cell volume? 4. Differentiate between living and non- living
cell. |
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30 |
Read the following passage and
answer the questions given below: Plants and animals are made up of millions of cells and these cells
have several similarities and differences. Structurally, plant and animal
cells are very similar because they are both eukaryotic cells. They both
contain membrane-bound organelles such as the nucleus, mitochondria,
endoplasmic reticulum, Golgi apparatus, lysosomes, and vacuoles. 1. Differentiate between plant and animal cell. 2. Name the organelles that have its own DNA and ribosomes. 3. Differentiate between nucleus and nucleoid. 4. Name the largest single isolated cell in animal. |
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