Available Answers

1. 1.

   Choose and write the correct option:

   1. To stalk attaching the leaf blade to the stem is called the ______________.
      1. vein
      2. petiole
      3. lamina
   2. Pine, deodar and fir are ______________ trees.
      1. yellow
      2. evergreen
      3. non-green
   3. Lotus and water lilly are ______________ plants.
      1. floating
      2. fixed
      3. underwater
   4. Seals, turtles and wheals have ______________ to swim in water.
      1. fins
      2. lungs
      3. spiracles
   5. ______________ has sharp spine on its body to protect from enemies.
      1. polar bear
      2. spiny anteater
      3. snail
   6. Green leafy vegetations are a good source of ______________.
      1. calcium
      2. iron
      3. vitamin D
   7. The ______________ is the part of tooth that you see.
      1. enamel
      2. crown
      3. neck
   8. ______________ are used for biting and cutting food.
      1. incisors
      2. canines
      3. molars
   9. What type of clothes we should not wear while working in the kitchen?
      1. cotton clothes
      2. synthetic clothes
      3. woolen clothes
   10. Always fasten your ______________ while travelling in a car.
       1. waist belt
       2. seat belt
       3. sear cover
2. 2.

   Fill in the blanks:

   1. The process of making food by green plants is called ______________.
   2. Different plants need different ______________ conditions.
   3. ______________ protects the embryo and provides it with water.
   4. Animals that live on trees are called ______________ animals.
   5. Deer have ______________ to protect them from enemies.
   6. The first set of teeth is called ______________ teeth.
   7. ______________ are used to grip and tear the food.
   8. The food from the food pipe comes into the ______________.
   9. Digestion begins in the ______________ when we eat food.
   10. Do not touch electrical equipments with ______________ hands.
3. 3.

   Write true or wrong for the following statements:

   1. Different plants have some types of leaves.
   2. All animals and human beings are called producers.
   3. Trees growing in plains have curved leaves.
   4. Animals that live in water are called aquatic animals.
   5. Tick, lice and mosquito are parasites.
   6. Proteins give us energy to do work.
   7. Jams and jellies are prevented by adding sugar in it.
   8. Crown is the part of tooth that you cannot see.
   9. We should wash our hands before and after eating food.
   10. Always play with sharp objects like scissors, blades, razors, etc.
4. 4.

   Match the following:

   1. bird	a. mammal
   2. echidna	b. metamorphosis
   3. frog	c. fry
   4. fish	d. moulting
   5. cockroach	e. incubation

    

5. 5.

   Why do leaves have stomata?