Available Answers

1. 1.

   Tick (√) the correct options:

   1. Thee thick woody stem of trees is called ________________.
      1. node
      2. intermode
      3. scale
      4. truck
   2. Rhizobium bacteria fix ________________ 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. starmen
      3. pistil
      4. ovary
   2. Male reproductive part of a flower is called ________________.
      1. starmen
      2. filament
      3. anther
      4. carpel
   3. Thee transfer of pollen grains from anther to the stigma of a pistil 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 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. ________________ prepare food, they are called the food factories or kitchen of the plant.
5. 5.

   What is the main function of flower?

6. 6.

   Name two plants that have reticulate venation.