krit.club logo

Super Senses and Animal Behavior - Amazing Senses in Animals

Grade 5CBSE

Review the key concepts, formulae, and examples before starting your quiz.

🔑Concepts

Animals have 'Super Senses' of sight, smell, hearing, and touch that are far more advanced than humans, helping them find food and protect themselves from danger.

Sense of Smell: Ants leave a chemical trail called pheromones for others to follow. Dogs can mark their territory using urine and recognize the scent of other dogs. Mosquitoes find humans by sensing body heat and the smell of the sole of the feet.

Sense of Sight: Birds of prey like eagles, kites, and vultures can see things from a distance of 88 meters that we can see from 22 meters. This means their vision is 44 times as sharp as humans.

Sense of Hearing: Animals like tigers can hear the slightest rustle of leaves. Bats use ultrasonic sounds and echolocation to navigate in the dark. Snakes do not have external ears; they feel vibrations on the ground.

Sleeping Patterns: Different animals have different sleep durations. For example, a Sloth sleeps for almost 1717 hours a day while hanging upside down. Many animals, like lizards, go into a long, deep sleep called hibernation during the winter season.

Warning Signals: Animals use different sounds or 'alarm calls' to warn others of danger. For example, birds and monkeys have different sounds for land predators versus air predators. Fishes give alarm calls by electric signals.

📐Formulae

VisionBird=4×VisionHumanVision_{Bird} = 4 \times Vision_{Human}

TTotal=TSleep+TAwake=24 hoursT_{Total} = T_{Sleep} + T_{Awake} = 24 \text{ hours}

f>20,000 Hz (Ultrasonic frequencies used by bats)f > 20,000 \text{ Hz} \text{ (Ultrasonic frequencies used by bats)}

💡Examples

Problem 1:

If a human can see an object clearly at a distance of 22 meters, at what distance can an eagle see the same object?

Solution:

88 meters

Explanation:

Since an eagle's vision is 44 times sharper than a human's, we calculate the distance as 2 m×4=8 m2 \text{ m} \times 4 = 8 \text{ m}.

Problem 2:

A sloth spends 1724\frac{17}{24} of a day sleeping. How many hours does it remain awake?

Solution:

77 hours

Explanation:

The total hours in a day is 2424. If the sloth sleeps for 1717 hours, the awake time is calculated as 2417=724 - 17 = 7 hours.

Problem 3:

Why do ants move in a straight line even when an obstacle is placed in their path?

Solution:

Due to pheromones.

Explanation:

As ants move, they leave a smell (pheromones) on the ground. The other ants follow the smell to find the way. Even with obstacles, they try to relocate the scent trail to maintain the line.