Science, unit 3, unit 4

Lesson - 3

Food of Animals and

Their Eating Habits

Main Points to Remember

👉 Different animals eat different types of food and they have different feeding habit.

👉 Animals that eat plants only are herbivores, animals that only eat the flesh of other animals are carnivores and animals that eat both plants and flesh of other animals are omnivores.

👉 Some herbivores eat by cud-chewing method and some eat by nibbling. Grain-eating animals swallow the grains directly and some animals cut nuts and grains with their small sharp teeth.

👉 The carnivores have sharp, strong teeth to tear the flesh and broad teeth to chew the food.

👉 Some carnivorous directly swallow their prey without chewing.

👉 The carnivorous birds have strong and curved beak.

👉 The omnivores have sharp teeth to bite the plants and strong teeth to tear the flesh.

👉 Some animals eat by different ways like sucking by suckers and proboscis.

1. Fill in the blanks with suitable words.

Answer 👉 

a. Cats eat both plants and flesh and are called omnivores.

b. Cow is a cud chewing animal.

c. Snakes have sharp cutting teeth.

d. Snake swallows the whole animal as food.

e. Eagles have strong beaks which help them to tear the flesh.

2. Write ‘True’ for the correct sentences and ‘False’ for the wrong ones.

Answer 👉 

a. True. Carnivores have sharp canine teeth for tearing flesh and broad molars for grinding bones.

b. False. Animals have different types of food. For example, herbivores eat plants, carnivores eat meat, and omnivores eat both plants and meat.

c. False. A cow eats by grazing. Grazing is the act of eating grass by biting off small pieces.

d. True. Frogs swallow their prey whole. They use their long, sticky tongues to catch insects, worms, and other small animals.

e. True. Squirrels have sharp incisors for breaking hard nuts. They use their teeth to crack the nuts open and then eat the seeds inside.

3. Match the following animals with their foods.

Answer 👉 

Lion - Deer

Pigeon - Grains

Elephant - Branches

Snake - Rat

Lizard - Grasshopper

4. Answer the following questions:

a. What are herbivores? Write any four examples

Herbivores are animals that primarily eat plants. Four examples of herbivores are cows, rabbits, deer, and horses.

b. What are cud-chewing animals? Give any two examples.

Cud-chewing animals are those that have a specialized digestive system capable of regurgitating and re-chewing their food. Two examples of cud-chewing animals are cows and goats.

c. What are carnivores? Give any four examples.

Carnivores are animals that primarily eat other animals. Four examples of carnivores are lions, tigers, wolves, and cheetahs.

d. What type of teeth do the carnivores have?

Carnivores typically have sharp teeth, including canines and sharp incisors, which are adapted for tearing and cutting flesh.

e. What are omnivores? Give any four examples.

Omnivores are animals that eat both plants and animals. Four examples of omnivores are bears, humans, raccoons, and pigs.

f. Give examples of any two animals that suck the blood of human beings or other animals?

Two examples of animals that suck the blood of human beings or other animals are mosquitoes and ticks.

g. Write down the name of any two animals that lick the liquid.

Two examples of animals that lick liquid are cats (licking milk) and dogs (licking water).

5. Draw the diagram of a butterfly sitting on a flower and colour it.

Do your self

 Lesson - 4

Animals seen in Different Times and

Seasons

Main Points to Remember

👉 There are different types of animals in our surrounding. All animals are not seen in all season and all time.

👉 Some animals like cow, goat, butterfly, crow, parrot, etc. remain active at day and passive at night. These are diurnal animals.

👉 Some animals like owl, bat, cat, etc. remain active at night and passive at day time. These are nocturnal animals.

👉 Animals like snake, frog, earthworm, etc. go for hibernation in winter season to protect themselves from cold and remain active during summer season.

👉 Animals like frog, mosquito, snail, slug, etc. get favorable conditions for reproduction and food in rainy season. So, they remain active in rainy season.

👉 Some animals with thick fur or feathers can remain active in winter season.

👉 The animals that can adjust themselves in all types of climate are warm blooded animals and the animals that cannot adjust themselves in all types of climate are cold blooded animals.

1. Fill in the blanks with suitable words.

Answer 👉 

a. Diurnal animals become active during the daytime.

b. An owl is a nocturnal animal.

c. Animals that go for hibernation remain active in the summer season.

d. Frogs have favorable conditions for reproduction in the rainy season.

e. Penguin is found in very cold places.

2. Write ‘True’ for the correct sentences and ‘False’ for the wrong ones.

Answer 👉 

a. False. Butterflies are diurnal animals, but moths are nocturnal animals.

b. True. Some carnivores like tigers, leopards, etc. remain active during the daytime.

c. False. Frogs are generally seen in the summer season.

d. True. Earthworms get favorable conditions in the rainy season.

e. False. Snakes are cold-blooded animals.

3. Write down the name of any three.

Answer 👉 

a. Diurnal animals: Robin, Squirrel, Eagle

b. Nocturnal animals: Bat, Owl, Raccoon

c. Cold-blooded animals: Snake, Turtle, Frog

d. Warm-blooded animals: Dog, Cat, Human

e. Animals seen in summer season: Butterfly, Grasshopper, Swallow

f. Animals seen in rainy season: Frog, Snail, Worm

4. Answer the following questions.

a. What are diurnal animals?

Diurnal animals are animals that are active during the day. They are most likely to be seen hunting, foraging, or socializing during the daylight hours. Some examples of diurnal animals include birds, mammals, and some reptiles.

b. What are nocturnal animals?

Nocturnal animals are animals that are active at night. They are most likely to be seen hunting, foraging, or socializing during the nighttime hours. Some examples of nocturnal animals include owls, bats, and skunks.

c. What is hibernation? Why do some animals go in hibernation?

Hibernation is a state of dormancy that some animals enter during the winter months. During hibernation, animals' heart rates, breathing, and body temperature slow down significantly. They may also lose weight and shed fur. Hibernation is a way for animals to conserve energy during the winter months when food is scarce. Some animals that hibernate include bears, groundhogs, and bats.

d. Are the snakes seen in winter? Why?

Yes, some snakes are seen in winter. However, not all snakes hibernate. Some snakes, such as garter snakes, remain active throughout the winter. Other snakes, such as rattlesnakes, may hibernate for part of the winter. Snakes that hibernate typically do so in burrows or other sheltered areas.

e. Why are the mosquitoes seen in rainy season?

Mosquitoes are seen in rainy season because the water that falls during the rainy season provides them with breeding grounds. Mosquitoes lay their eggs in water, and their larvae need water to survive. The rainy season also provides mosquitoes with an abundance of food, such as insects and small mammals.