Available Answers

1. 1.

   Choose and write the correct answer (MCQs) :

   1. The number of chambers present in human heart are:
      1. 2
      2. 3
      3. 4
      4. 6
   2. The vascular tissues which translocate the food in the plant is :
      1. xylem
      2. phloem
      3. cambium
      4. pith
   3. An object that is moving is said to be in :
      1. oscillation
      2. motion
      3. vibration
      4. none of these
   4. Looking mirror is a :
      1. concave mirror
      2. convex mirror
      3. plane image
      4. none of these
   5. The black remain in sewage treatment is used as :
      1. pesticides
      2. fertilizer
      3. insecticides
      4. none of these
2. 2.

   Fill in the blanks:

   1. Bile pigments are important _______________ colour to urine.
   2. The transfer of food through the phloem in the plant is called _______________.
   3. The centre of hurricanes, called the _______________  is usually calm and cloudless.
   4. When electricity passes through a conductor, it behaves like a _______________.
   5. In the water cycle, water circulates continually between the _______________ and _______________.
   6. Rubber is the _______________ of rubber trees.
3. 3.

   Match the column A with column B:

   A	B
   1. Stigma	a. pollen grain
   2. Transfer of pollens	b. ovules
   3. Budding	c. pollination
   4. Anther	d. female reproductive organ
   5. Ovary	e. hydra

    

4. 4.

   Write and explain the components of blood?
5. 5.

   How is internal fertilization different from external fertilization?
6. 6.

   Explain how seed is dispersed in water.