Class 5 EVS Chapter 1 Super Senses
Choose the Correct Option:
What sense do snakes primarily use to perceive their environment?
- a) Sight
- b) Smell
- c) Hearing
- d) Taste
Answer: b) Smell
Which animals are known to communicate using electric signals?
- a) Dogs
- b) Birds
- c) Fishes
- d) Dolphins
Answer: c) Fishes
What is the main reason elephants are hunted by humans?
- a) Their meat
- b) Their tusks
- c) Their skin
- d) Their trunk
Answer: b) Their tusks
How do most birds’ eyes differ from humans?
- a) They can see in the dark.
- b) They can see a wide range of colors.
- c) Their eyes can focus on two different things at once.
- d) They have a highly developed sense of taste.
Answer: c) Their eyes can focus on two different things at once.
What do some animals use to mark their territory and identify other animals?
- a) Sounds
- b) Visual signals
- c) Smell
- d) Vibrations
Answer: c) Smell
State True or False
Dogs primarily use their sense of sight to identify other dogs in their territory. False
Dolphins use a special language to communicate with each other. True
Snakes have external ears for hearing sounds. False
Most animals that are awake during the daytime can see colors. True
Elephants are hunted primarily for their meat. False
Langurs and some birds use different sounds to warn about different types of dangers. True
Fishes communicate with each other using visual signals. False
Some animals can detect earthquakes or storms before they happen and change their behavior accordingly. True
Rhinoceroses are often killed for their skin. False
Mosquitoes locate humans primarily by detecting body heat. True
Class 5 EVS Chapter 1 Super Senses Extra Que Ans
Q: How do some animals use their sense of smell?
A: Some animals use their sense of smell to find prey, recognize their friends, locate mates, and detect danger. For example, ants leave scent trails to communicate, male insects can identify females by their smell, mosquitoes locate humans by body odor and heat, and dogs use smell to mark territory and identify other dogs.
Q: How do birds’ eyesight differ from humans?
A: Most birds have eyes on the sides of their heads, allowing them to focus on two different things simultaneously. When looking straight ahead, both their eyes focus on the same object. Some birds like kites, eagles, and vultures have exceptional long-distance vision, being able to see things from a much greater distance than humans.
Q: How do snakes hear?
A: Snakes do not have external ears that you can see. Instead, they feel vibrations on the ground, which allows them to detect sound and perceive their environment.
Q: How do animals give warning signals to each other?
A: Animals give warning signals to each other in various ways. For example, langurs and birds use special calls to alert their group members about potential dangers. Fishes communicate through electric signals. Dolphins use different sounds to convey messages to each other. Animals often have specific signals for different types of threats, such as aerial or ground-based predators.
Q: Why animals are killed by humans?
A: Animals are often killed by humans for various reasons, including ivory from elephants, horns from rhinoceroses, skins from tigers, crocodiles, and snakes, and musk from musk deer. The people who kill animals for such purposes are called hunters and poachers, and this practice has led to the endangerment or extinction of many species.
