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Worksheet
Practice. Learn. Succeed
Sub : Science
Grade: IX
Name: ..............................................................
Date: ...................................................
ID No..................................................
Tick the Choice Question
1.
The basic structural and functional unit of all living organisms is a/an
(a) organ
(b) tissue
(c) cell
(d) proteins
2.
The cell was discovered by
(a) Robert Brown
(b) Leeuwenhoek
(c) Robert Hooke
(d) Flemming
3.
The cell will swell if
a. the medium surrounding the cell has a higher water concentration than the cell
b. the medium has exactly the same water concentration as the cell
c. the medium has lower concentration of water than the cell
d. concentration of water molecules does not matter
4.
Chromosomes are made up of
(a) DNA
(b) protein
(c) both DNA and protein (d) RNA
5.
Cell theory was given by
(a) Schleiden and Schwann
(b) Virchew
(c) Hooke
(d) Haeckel
6.
Amoeba acquires its food through a process known as
(a) plasmolysis (b) endocytosis
(c) exocytosis
(d) both exocytosis and endocytosis
7.
The plant cell wall is mainly composed of
(a) proteins (b) lipids
(c) cellulose (d) none of these
8.
An undefined nuclear region containing only nucleic acid in prokaryotes is known as
(a) nucleolus
(b) nucleus
(c) nucleoid (d) none of these
9.
The organisms lacking nucleus and membrane-bound organelles are
(a) prokaryotes
(b) diploids
(c) eukaryotes
(d) none of these
10. Two immiscible liquids are separated by
(a) distillation
(b) fractional distillation
(c) chromatography
(d) separating funnel
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WKS - IXSCI136