Available Answers

1. 1.

   Tick (√) the correct options:

   1. The thick woody stem of trees is called _______________.
      1. node
      2. internode
      3. scale
      4. trunk
   2. Rhizobium bacteria fix atmospheric _______________ in the soil.
      1. oxygen
      2. carbon dioxide
      3. nitrogen
      4. hydrogen
2. 2.

   Tick (√) the correct options:

   1. The flat green portion of the leaf is called _______________.
      1. lamina
      2. stalk
      3. midrib
      4. vein
   2. The arrangement of veins on lamina is called _______________.
      1. leaf base
      2. venation
      3. margin
      4. petiole
3. 3.

   Tick (√) the correct options:

   1. Female reproductive part of a flower is called _______________.
      1. pollen
      2. stamen
      3. pistil
      4. ovary
   2. Male reproductive part of a flower is called _______________.
      1. stamen
      2. filament
      3. anther
      4. carpel
   3. The transfer of pollen grains from anther to the stigma of a flower is called _______________.
      1. fertilisation
      2. germination
      3. pollination
      4. anther
   4. After fertilisation, the ovules grow into _______________.
      1. fruits
      2. seeds
      3. leaves
      4. stalks
   5. Which of the following is the part of a leaf?
      1. petiole
      2. lamina
      3. midrib
      4. all of these
   6. It is not easy to pull out the weed plant from the soil because it has strong _______________.
      1. stem
      2. roots
      3. leaves
      4. flowers
   7. We see red-coloured veins on the white flowers of cut balsam stem dipped in a glass containing red coloured water. This shows conduction of water by _______________.
      1. roots
      2. stem
      3. flowers
      4. leaves
4. 4.

   Fill in the blanks:

   1. The green leaf-like parts in the outermost circle of the flower are called _______________.
   2. The part of the plant that grows under the ground is called the _______________.
   3. The fusion of male and female sex cells is called _______________.
   4. Bleaching removes _______________ from the leaf.
   5. _______________ are called the food factories or kitchen of the plant.
5. 5.

   What is the main function of a flower?

6. 6.

   Name two plants that have reticulate venation.