NCERT MCQ Solutions for Class 5 EVS Looking Around Chapter 1 Super Senses

Ants leave a smell on the ground as they move, and other ants follow this smell to find their way. When an ant approaches a hole, the guard ant recognizes it by its smell. This scent-based recognition system is crucial for ant colonies to identify friend from foe and maintain their organized social structure.

Mosquitoes can find humans through multiple sensory inputs: the smell of your body, the smell of the sole of your feet, and the heat of your body. This combination of chemical and thermal detection makes mosquitoes very effective at locating their human targets even in darkness.

“I can find my female worm from many kilometres away by her smell.” This demonstrates the incredible sensitivity of some insects’ olfactory systems, allowing them to detect and respond to pheromones across vast distances for reproductive purposes.

Dogs mark out their own area on the road and can determine if another dog has entered their territory by smelling the urine or potty left behind. This scent-marking behavior is a common territorial practice among many mammals for communication and boundary establishment.

“Most of the birds have their eyes on either side of the head.” This positioning allows birds to have a wider field of vision and can focus on two different things simultaneously, though they can also focus both eyes on the same object when looking straight ahead.

In most birds, eyes are fixed and cannot move, so birds have to turn their heads to see around. This is why we observe birds frequently moving their necks – it’s their way of scanning their environment since they cannot move their eyes like humans do.

“Some birds like kites, eagles, vultures can see four times as far as we can. These birds can see things from a distance of eight metres what we can see from a distance of two metres.” This enhanced vision helps them spot prey from great heights.

“Those animals that are awake at night can see things only in black and white colours.” This is in contrast to animals that are awake during the daytime, which can see some colors. Night vision typically sacrifices color perception for enhanced light sensitivity.

Snakes do not have external ears (which you can see). They only feel the vibrations on the ground.” This adaptation allows snakes to detect movement and sounds through ground vibrations rather than through traditional hearing mechanisms.

A sloth “spends almost 17 hours a day sleeping while hanging upside down on a tree branch.” This makes sloths one of the longest-sleeping animals, with only about 7 hours of waking time per day for eating and minimal movement.

“Sloths live for about 40 years and in that time they move around only eight trees.” This demonstrates the incredibly slow and energy-efficient lifestyle of sloths, who spend their entire lives in a very small area due to their low-energy leaf diet.

A tiger’s “roar can be heard upto 3 kilometres away.” This powerful vocalization serves multiple purposes including territory marking, communication with other tigers, and intimidation of potential threats or rivals in their large territorial ranges.

“A tiger can see six times better at night than most of us.” This enhanced night vision is crucial for tigers as they are primarily nocturnal hunters, allowing them to effectively hunt prey in low-light conditions when their prey may be less alert.

“The tiger’s whiskers are very sensitive and can sense the movements or vibrations in air. They help the tiger move in the dark and find its prey.” These whiskers act like sensory antennae, detecting even small air movements that indicate nearby prey or obstacles.

The several animals killed for their body parts: “Elephants are killed for their tusks, rhinoceros for its horn, tigers, crocodiles and snakes for their skins.” Elephants specifically are targeted for their valuable ivory tusks, which has led to significant population declines.

“People who kill animals are called hunters and poachers.” These individuals illegally kill protected animals for profit, contributing to the decline in animal populations and threatening species extinction. The distinction often involves legal versus illegal killing.

“Jim Corbett National Park in Uttrakhand and ‘Ghana’ in Bharatpur district of Rajasthan” as examples of protected areas. Jim Corbett is specifically identified as being located in Uttarakhand state, making it one of India’s most famous tiger reserves.

“High up on a tree, a langur warns others of dangers like a tiger or leopard. The langur does this by making a special warning call.” This vocal communication system helps protect the entire group by alerting them to predators in the area.

“In December 2004, few tribes that live in the forests of the Andaman Islands noticed the animals behaving in a different manner. They guessed some danger. So they moved away to a safer part of the island. Soon after, the islands were hit by the tsunami but these people were saved.”

“Fishes give alarm call by electric signals.” This is a unique form of communication used by certain fish species to warn others of danger, different from the vocal calls used by mammals and birds, demonstrating the diverse ways animals communicate.