Senses
1. How many senses
do the humans have?
Answer:
Humans have
five basic senses.
2. List out the
senses you have?
Answer:
We have the
following senses.
|
Sl.
No. |
Senses |
|
1 |
touch |
|
2 |
sight |
|
3 |
hear |
|
4 |
taste |
|
5 |
smell |
3. How does an
eagle find a roti on a ground?
Answer:
An eagle has
the super sense of sight, which helps to find a roti on a ground.
4. How do ants
gather around a food?
Answer:
Due to the
super sense of smelling ants gather around a food.
5. How did the ant
know that the other ants were not from its group?
Answer:
The ant knew
that the other ants were not from its group by the help of smell.
6. How did the
guard ant recognize this ant?
Answer:
The guard ant recognizes
this ant with the help of its smell.
7. How do the ants
move in a line?
Answer:
When the ants
move, they leave a smell on the ground. The other ants follow the smell to find
the way and move in a line.
8. How can a
silkworm find its female worm from many kilometres away?
Answer
A silkworm can
find its female worm from many kilometres away by her smell.
9. How do the
mosquitoes find us?
Answer
Mosquitoes can
find us
- by the smell of
our body
- by the smell of
the sole of our feet
- by the heat of our
body.
10. How do dogs
make out if another dog has come into their area?
Answer
11. In what ways do human beings make use of this special sense of smell of dogs?
Answer:
Human beings
use the special sense of smell of dogs as follows.
Police use dogs
to catch thieves and other criminals.
People use dogs
to watch houses.
Security personnel
use to detect bombs and other explosives.
12. How is your
sense of smell helpful to you?
Answer
Our sense of
smell helps us in many ways as
to find leakage
of cooking gas
to find burning
of food
to know spoiling
of food
to detect electric
short circuit etc.
13. Write the name
of a bird which has eyes in front of its head ( like in humans ).
Answer
Owl has eyes in
front of his head ( like in humans ).
14. Write the names
of any four birds which have eyes on either side of the head.
Answer
The birds
having eyes on either side of the head are parrot, eagle, crow and sparrow.
15. Why do birds
move their neck very often?
Answer
In birds, eyes
are fixed and can not move. So they turn their heads to see around.
16. How many times can
the kites, eagles and vultures see than us?
Answer
Kites, eagles
and vultures can see four times as far as we can.
17. Which animals
can see some colours and which animals can see in black and white colours?
Answer
Animals that are awake in the day time can see some colours but the animals awake at night can see in black and white colours.
18. Why can’t we see the birds’ ears?
Answer
Birds’ ears are
small holes covered with feathers. So we can’t see them.
19. Write any four
animals whose ears are bigger than our ears.
Answer
The animals are
Elephant
Cow
Buffalo
Donkey
20. How do snakes hear?
Answer
Snakes do not have external ears. They only feel the vibrations on the ground.
21. Who warns other
animals about dangers by sitting high up on a tree? How?
Answer
A langur warns
other animals about dangers by sitting high up on a tree by making a special
warning call.
22. How do fishes
give alarm call?
Answer
Fishes give
alarm call by electric signals.
23. How do dolphins
give messages to each other?
Answer
Dolphins give
messages to each other by making different sounds.
24. What is
hibernation?
Answer
Some animals go
into a long deep sleep in winter season. This is called hibernation.
25. Write a
paragraph on Sloth
Answer
Sloth
Sloth is an
endangered animal. It looks like a bear but is not. It sleeps for almost 17
hours a day. It sleeps hanging upside down on a tree branch. It lives for about
40 years. It moves around only 8 trees throughout the life time.
26. Write the
sleeping hour of the following animals.
Answer
|
Animals |
Sleeping
hour |
|
Sloth |
17
hours |
|
Cow |
4
hours |
|
Python |
18
hours |
|
Giraffe |
2
hours |
|
Cat |
12
hours |
27. Write a paragraph about tigers.
Answer
Tiger
Tiger is an
endangered animal. It can see six times better than us. The whiskers of a tiger
help him / her to find the prey. Tiger’s roar can be heard up to 3 km. Tigers
can make the difference between rustling of leaves and the sound of animals.
These are killed for their skin.
28. List out any
five endangered animals.
Answer
- Sloth
- Tiger
- Elephant
- Musk deer
- Rhinoceros
29. Why are the
following animals killed?
Answer
|
Animals |
Purpose |
|
Tiger |
Skin |
|
Elephant |
Tusk |
|
Musk
deer |
Scent |
|
Rhinoceros |
Horn |
|
Crocodile |
Skin |
|
Snakes |
Skin |
30. Why are the
animals killed? What are they called those who kill them?
Answer
Animals are killed
for different body parts like skin, horn, scent, tusk etc.
Those who kill
the animals are called hunters or poachers.
31. What are
national parks and sanctuaries?
Answer
National parks
and sanctuaries are reserving areas set by government for protecting animals
and birds.
32. List out any
five national parks or sanctuaries and the state they belong to.
Answer
|
National
Park |
State |
|
Jim
Corbett |
Uttarakhand |
|
Ghana |
Rajasthan |
|
Silmilipal |
Odisha |
|
Gir |
Gujarat |
|
Periyar |
Kerala |
Homework
1. List out the
senses and the sense organs.
Answer:
|
Sl.
No |
Senses |
Sense
organs |
|
1 |
……………….. |
……………….. |
|
2 |
……………….. |
……………….. |
|
3 |
……………….. |
……………….. |
|
4 |
……………….. |
……………….. |
|
5 |
……………….. |
……………….. |
3. List out any
five things separately whose smell you like and dislike.
Answer
|
Things
whose smell I like |
Things
whose smell I dislike |
|
……………………….. |
……………………….. |
|
……………………….. |
……………………….. |
|
……………………….. |
……………………….. |
|
……………………….. |
……………………….. |
|
……………………….. |
……………………….. |
4. Draw or paste pictures of any five animals which go on hibernation during winter.
5. Show the
sleeping hour of the following animals in circular diagrams.
|
sloth |
cow |
python |
giraffe |
cat |
6. Write the animals
against the national parks given below. Also write the name of the states.
|
National
park |
State |
Animal |
|
Kaziranga |
……………….. |
……………….. |
|
Kanha |
……………….. |
……………….. |
|
Bhitarkanika |
……………….. |
……………….. |
|
Ranthambore |
……………….. |
……………….. |
|
Hemis |
……………….. |
……………….. |
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