Available Answers

1. 1.

   Fill in the blanks.

   1.  The reproductive sex cells are known as _________________ .
   2.  Multiple fission occurs in certain algae like Chlamydomonas and _______________ .
   3.  _______________ takes place in plants which do not produce seeds.
   4.  Sugarcane and pineapple are grown by ________________ .
   5.  In grafting, the stem cutting called ________________ from ane plant is attached and tied to the rooted stem of another plant called _______________ .
2. 2.

   Tick the most appropriate answer.

   1.  The simple division of an organism into two smaller daughter cells of roughly equal size is called
      1.  binary fission
      2.  multiple fission
      3.  fragmentation
      4.  budding
   2.  Which of these can be reproduced by its stem?
      1.  Carrot
      2.  Bryophyllum
      3.  Rose
      4.  Papaya
   3.  An incomplete flower with only androecium is called a
      1.  hermaphrodite flower
      2.  pistillate flower
      3.  bisexual flower
      4.  staminate flower
   4.  Flowers which have all the four whorls are called
      1.  neutral flower
      2.  staminate flowers
      3.  complete flowers
      4.  incomplete flowers
   5.  A pollen tube grows through the
      1.  filament
      2.  style
      3.  anther
      4.  ovary
   6.  Seeds are produced from
      1.  ovules
      2.  anthers
      3.  pollen grains
      4.  eggs
   7.  A plant embryo consists of
      1.  cotyledons and embryonal axis
      2.  plumule and radicle
      3.  plumule and cotyledons
      4.  cotyledons, embryonal axis and radicle
   8.  Fertilization takes place inside the
      1.  ovary
      2.  ovule
      3.  ovum
      4.  gynoecium
   9.  In cross pollination pollen grains from the anther of a flower are transferred to the stigma of
      1.  the same flower
      2.  another flower on the same plant
      3.  flower of another plant of different variety
      4.  flower of another plant of same variety
   10.  Which of the following is an artificial process?
       1.  Binary fission
       2.  Budding
       3.  Grafting
       4.  Fragmentation
3. 3.

   Fill in the blanks.

   1.  Under unfavourable conditions certain organisms develop a _______________ for protection.
   2.  The small outgrowth arising from the yeast cell is called _______________ .
   3.  The gynoecium consists of ______________ , ________________ and _______________ .
   4.  Pollination taking place between two flowers present on two separate parent plants is called _______________ .
   5.  In peas, germination is ________________ .
4. 4.

   Define multiple fission.

5. 5.

   Define budding.

6. 6.

   Define gynoecium.