Question
Make a sketch of human nerve cell. What function do nerve cells perform?
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Answer
The function of nerve cell: The nerve cell receives and transfers messages, thereby helping to control and coordinate the working of different parts of the body.Need a full question paper?
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Read the statements given below and fill up the blanks with the correct words listed in the box.
$i.$ The meal that includes all $............$ is a balanced diet.
$ii.$ Insufficient production of $............$ in the tadpoles leads to their incomplete development.
$iii.$ Endocrine glands are also called $............$ glands.
$iv.$ After attaining puberty boys develop a $............$ voice.lanks with the correct words listed in the box.
→$i.$ The meal that includes all $............$ is a balanced diet.
$ii.$ Insufficient production of $............$ in the tadpoles leads to their incomplete development.
$iii.$ Endocrine glands are also called $............$ glands.
$iv.$ After attaining puberty boys develop a $............$ voice.lanks with the correct words listed in the box.
Give examples to show that friction depends on the nature of two surfaces in contact.
What is a rubber sucker? How does it work? State any one use of a rubber sucker.
Explain why, frictional force is said to be a contact force.
What makes the middle zone of a candle flame luminous (or light-giving)?
Which of the following will cause regular reflection of light and which diffuse reflection of light?
$i.$ Polished wooden table.
$ii.$ Chalk powder.
$iii.$ Cardboard.
$iv.$ Mirror.
$v.$ Paper.
$vi.$ Marble floor with water spread over it.
→$i.$ Polished wooden table.
$ii.$ Chalk powder.
$iii.$ Cardboard.
$iv.$ Mirror.
$v.$ Paper.
$vi.$ Marble floor with water spread over it.
What is irrigation? Why is irrigation necessary?
Explain how sex is determined in the unborn baby.
Name the object $($or part$)$ which vibrates to produce sound in the following musical instruments:
$a.$ Sitar.
$b.$ Dholak.
$c.$ Flute.
$d.$ Cymbals.
$e.$ Veena.
$f.$ Tabla.
→$a.$ Sitar.
$b.$ Dholak.
$c.$ Flute.
$d.$ Cymbals.
$e.$ Veena.
$f.$ Tabla.
Describe how, fossil fuels were formed.