Science Paper Class 9TH

Subject: Science Class:  IX
Time: 30 minutes Marks: 25

Name: ______________________                                           Date: ____________
Questions 1 2 3 Total Marks
Marks Obtained
Instructions:
 Attempt all Questions.
Overwritten/re-written answers will be considered as wrong.
1    Chose the correct option.  /9
The parts of neuron which receives messages are:
cell bodies
dendrites
axons
nuclei
Sensory neurons carry messages towards:
muscles
muscles & glands
sense organs
brain & spinal cord
The part of body which filters wastes from blood:
Liver
Kidney
Intestine
stomach
Chromosomes are made up of:
DNA only
Proteins
DNA, proteins & fats
DNA & proteins
The characters which are passed from parents to offspring:
Inheritable characters
Non-Inheritable characters
Environmental characters
Natural characters

In humans, a sperm has 23 chromosomes. Egg cell has:
23 chromosomes
46 chromosomes
no chromosomes
69 chromosomes
Zygote is formed by the fusion of:
Two sperm cells
Two egg cells
Two somatic cells
Sperm cell & egg cell
The SI unit of pressure:
Watt
Joule
Pascal
newton
The speed of sound in air is  about:
130 m/s
230 m/s
330 m/s
430 m/s
Q. 2. Fill in the blanks. /10
__________________________ consists of brain and spinal cord.
Accumulation of salts in kidneys results into _______________.
The chemical reaction during which heat is evolved is called _______________ reaction.
The transmission of characters from parents to offspring is called ____________.
The basic physical and functional unit of heredity is called ___________.
The characters which are transmitted to next generation are called ______________  characters.
The force which acts normally per unit area is called __________________.
The SI unit of pressure is __________________.
The water pressure in a vessel increases with the _________________ in depth.
The products using ‘sol’ systems are called _________________.
Q. 3   Write the answers of the following questions.
Give at least two examples of voluntary actions. /2

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What is gene? /2

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Define a chemical reaction. /2
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