DAV SCIENCE STD III

  BIRDS AND THEIR NEST D1. Name three birds who work in pairs to make their nests. Ans:The birds who work in pairs to make nest are sparrow, dove and sunbird. D2. Why are birds called as aerial animals? Ans: Birds are called as aerial animals because they can fly in the air and spend most their time in air. D3. List some materials that are used by various birds to make their nests. Ans:The materials that are used by various birds to make their nests are: twigs, cotton, straw, own  feathers etc. D4. When and where does a barbet make its nests? Ans: Barbet makes its nest in the tree trunk during the summer season. D5. List some place where we find birds’ nests. Ans: The places where we find are- Meter room, top of the almirah, behind the shelf, electric pole, tree trunk etc. E1. Write any three features of birds that help them to fly. Ans:The feature that help bird to fly are: - i)The     hollow bone makes their body light. ii...

  D.1.State the function of a leaf. Ans:Leaf prepares food for the plant. 2.Write the role of the roots of a tree. Ans:Roots fix the plant on the soil and absorb water and minerals from soil. 3.What type of stem do climbers have? Ans: Climbers have thin and weak stem. 4.State the difference between the stem of a shrub and a herb. Ans:Shrubs have woody stems whereas herbs have thin,green and weak stems.

 

Feeding  habits of animals  A Fill in the blanks 1. swallow 2. plants 3. sticky 4. nibble 5. suck 6. chisel B Match the following  1. snake--frog 2 monkey-banana 3.lion--deer 4. elephant -sugarcane C.Tick the correct  option 1. Rat 2. pointed teeth 3. Grains 4. Cow D Answer the following  questions  in brief  1. Animals who eat the flesh of other animals are called carnivorous animals.  Ex lion, tiger, snake etc 2. The strong and broad back teeth help a cow to chew the grass. 3.Animals that gnaw their food are rabbits, squirrels, and rat. 4. The squirrels have sharp front chisel-like teeth that help them to bite even hard and rough food grains and other things. The two more animals having the same type of teeth are rats and rabbits. E  .Answer the following questions. 1.The difference between  herbivorous and carnivorous animals are A.Herbivores are plant eaters and carnivores are flesh eaters. B.Herbivores have strong, broad back teet...

ANIMALS   A.   Fill in the blanks 1 four 2.high 3.snow  4.fresh 5. Humans 6.Land B.Match the following Dog - people often keep it as a pet Camel-. Can live without water for Many days Toad---lives both land and water Polar bear-- has thick fur on its body C.Tick the correct options 1..Camel- 2..Penguin 3..Snake 4.Fur 5..Rabbit D Answer the following questions 1.Name any four land animals  Ans:Four land animals are  cow , goat ,horse, dog  and cat. 2.Name any two things that forests provide to animals. Ans:Two things that forests provide animals  are food and shelter. 3.How do fins and gills help a fish? Ans:Fins help a fish for swimming whereas gill help in breathing. 4.Why do frogs need water? Ans: Frogs need water to lay   eggs. 5. Why dogs and cats are favorite  pet of many people? Ans:Dogs and cats are the favorite pets of many people because they like to interact and play with  human. They also love their masters...

Q.1 Fill in the blanks- a) Poultry birds should be fed with _________________________and water. b) Animals eating both plants and animals are called ______________________animals. c) Squirrel has sharp front _______________like teeth. d) A __________________is a doctor for animals. Q.2. Name two of each- a) Animals having sucking type of mouthparts-i.______________________ii. _____________________ b) Gnawing animals-i. ___________________ii.___________________________ c) Poultry birds-i. __________________ii._______________________ d) Animals showing chewing the cud-i.__________________________ii.____________________ Q.3. Choose the appropriate answer- a) This animal has sticky tongue- i. Lizards                ii. Cow                    iii. Snake          ...