Q1. Multiple choice questions (MCQs)
(a) which of the following is true in the context of aerial animals?
Ans. 3.Animals spending most of their time in air
(b) which of the following adaptations un polar bear helps to protect itself in cold temperatures?
Ans. 1. Scale
(c) which of the following adaptations helps a stick insect defend itself against predators?
Ans. 1.Hibernation
(a) omnivores eat both plants and other animals.
(b) Arbireal animals are animals which spend most of their time in/on Trees.
(c) Animals which hunt and catch their prey are called predators.
(d) Hibernation is a long winter sleep of animals.
(e) An animal which can bring back food from its stomach and chews it again is known as ruminants.
(a) snake ----------- External ear absent
(b) polar bear----- Hibernation in winter
(c) owl --------------- Nicturnal animal
(d) dolphins ------- lungs
(e) deer -------------- Rumen
Q4. Name one animals of each type.
(a) herbivore - cow
(b) Aquatic - fish
(c) carnivore - Tiger
(d) Terrestrial - Rat
(e) Arboreal - monkey
(f) Aerial - bat
(g) omnivore - bears
(h) parasitic - bed bugs
Q5 Read the following two statements and choose the correct option.
Statement1. The feet of frogs and ducks are webbed.
Statement 2. Webbed feet adaptation in frogs and ducks helps them in grabbing and eating insects.
Ans. Statement 1 is correct but statement 2 is incorrect.
Q6. Short answer type questions
(a) what is adaptation?
Ans. Adaptation is the process of an animal developing special characteristics in order to adapt to change in its environment or habitat.
(b) what are nocturnal animals? Give examples.
Ans. Animals that come out at night in search of food and water are called nocturnal animals.
(c) write the adaptative features of a camel.
Ans. Camel have thick skin which protects them from the heat. They also have special organs to store water.
(d) classify animals on the basis of their eating habits.
Ans. Animals are classified into four categories depending on their eating habit.
1. Herbivores animals
2. Carnivorous animals
3. Omnivores animals
4. Parasitic
(e) how are the strips on the body of zebra helpful to them?
Ans. Zebra have strips on their bodies which help them mix with their surrounding to evade predator.
7. Long answer type questions.
(a) what do you understand by terms rumen and ruminnants? Write two adaptive feature of herbivores animals.
Ans. Ruminants are herbivores animals that first swallow their food without chewing and collect it in a special bag in their gut called rumen. Later on while resting they bring it back into the mouth to chew it. For example:- cow and Buffalo. Adaptive feature of herbivores animals are 1. They usually have sharp flat teeth to cut grass and leaves of plants. They also have strong broad back teeth to grind their food. 2.they have long and strong legs which enable them to run long distances.
(b) write four adaptive feature of terrestrial animals.
Ans. 1.these animals have legs to walk and lungs to breathe.
2.they have well- developed sense organs and a nervous system for quick response to change in their surroundings.
3.Animals living in cold regions like polar bear and yak have fur or long hair on their bodies to keep the worm.
4.Animals living in desert region like camel have thick skin and short fur to store water.
(C) How do animals protect themselves from enemies?
Ans. Some animals protect themselves from their enemies by changing the colour of their skin to match the colour of their surrounding. Zebra have strips on their bodies which help them mix with their surrounding yo evade predators. The white colour of a polar bear helps it to merge with the white snow chameleon change body colour to match leaves are branches of trees. Animals like elephant and hippopotamus have large body size to scare away their enemies ,some animals also have strong legs that help them to flee in case of danger.
(d) Differentiate between arboreal and aerial animals.
Ans. Arboreal animals:- 1. Animals which live mostly on trees are called arboreal animals
2. They have strong legs and arm. They also have strong claws and a broad hip girdle to support while climbing. Their streamlined bodies enable them to cut through air easily.
3. Some examples of arboreal animals are monkey, chimpanzees, chameleons etc
Aerial animals:- 1. Animals that fly are called aerial animals.
2.They have wings that enable them to fly birds have light hollow bones and feathers which make their flight possible
3. Some examples of aerial animals are birds such as sparrows, eagles, crows etc.
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