Here are topic-wise multiple-choice questions (MCQs) along with answers and explanations for each topic from the document:
Super Senses
MCQs
1. Which of the following animals has the sharpest sense of hearing?
a) Elephant
b) Dog
c) Tiger
d) Rabbit
2. How do ants recognize their friends?
a) By touching their antennae
b) By making sounds
c) By watching their movements
d) By sensing their body temperature
3. Why do birds move their necks frequently?
a) To scare away predators
b) Because their eyes are fixed and cannot move
c) To balance their body
d) To find food easily
4. Which of these animals can see in complete darkness?
a) Dog
b) Bat
c) Owl
d) Both b and c
5. Why do dogs sniff around different places?
a) To mark their territory
b) To find food
c) To detect other animals
d) All of the above
Answers and Explanation
1. b) Dog – Dogs have an extremely strong sense of hearing, capable of detecting sounds at higher frequencies than humans.
2. a) By touching their antennae – Ants use pheromones and antennae to recognize their colony members.
3. b) Because their eyes are fixed and cannot move – Birds cannot move their eyes like humans, so they move their heads to adjust their vision.
4. d) Both b and c – Bats use echolocation, and owls have highly adapted eyes for night vision.
5. d) All of the above – Dogs use their sense of smell for marking territory, finding food, and detecting the presence of other animals.
Why Does It Happen? Think and Tell
MCQs
1. Why do mosquitoes get attracted to humans?
a) They like human blood
b) They detect body heat and smell
c) They are attracted to bright colors
d) They get confused by human movement
2. What do animals use their sense of smell for?
a) Identifying friends and enemies
b) Finding food
c) Detecting predators
d) All of the above
3. What is the main function of a dog’s wet nose?
a) It helps them to detect faint smells
b) It keeps them cool
c) It attracts other dogs
d) It helps them see in the dark
4. How do some male insects locate their females?
a) By hearing their sounds
b) By detecting their body temperature
c) By following their scent
d) By observing their movement
5. What is the reason for birds having eyes on the sides of their heads?
a) To detect food better
b) To have a wider field of vision
c) To see better in the dark
d) To look smaller to predators
Answers and Explanation
1. b) They detect body heat and smell – Mosquitoes can sense body temperature and the smell of sweat and carbon dioxide.
2. d) All of the above – Animals use smell for various functions like food detection, communication, and identifying threats.
3. a) It helps them to detect faint smells – A dog’s wet nose enhances its ability to detect even the faintest smells.
4. c) By following their scent – Many insects, like the silkworm moth, locate their mates by following pheromones.
5. b) To have a wider field of vision – Having eyes on the sides allows birds to see in a wide range without moving their heads.
How Did the Ant Recognise a Friend?
MCQs
1. What do ants leave behind as they move?
a) Footprints
b) A trail of food
c) A chemical smell
d) Sound vibrations
2. How do ants communicate with each other?
a) By making sounds
b) By touching antennae
c) By showing movements
d) By changing color
3. What happens when an ant from a different colony tries to enter another colony’s area?
a) It is welcomed
b) It is attacked or chased away
c) It is ignored
d) It is given food
4. What sense do ants primarily use to recognize each other?
a) Sight
b) Hearing
c) Smell
d) Taste
5. What happens if an ant’s path is blocked?
a) It immediately turns back
b) It stops moving
c) It tries to find another route using its antennae
d) It waits for other ants to clear the way
Answers and Explanation
1. c) A chemical smell – Ants leave pheromone trails that other ants follow to find their way.
2. b) By touching antennae – Ants communicate using their antennae, which help them detect pheromones.
3. b) It is attacked or chased away – Ants from different colonies often fight over territory.
4. c) Smell – Ants rely on their sense of smell to recognize their colony members.
5. c) It tries to find another route using its antennae – Ants use their antennae to explore new paths and detect changes in their environment.
These MCQs are designed to test comprehension and encourage critical thinking about the given topics. Let me know if you need more!
