Available Answers

1. 1.

   Write true or false. Correct the false statements.

   1. The four whorls of a typical flower arise from the tip of the pedicel.
   2. Anther, style and stigma are the parts of a carpel.
   3. A stamen has a long stalk called style.
   4. The transfer of the pollen grains from the anthers to the stigma of a flower is called fertilization.
   5. Most insect-pollinated flowers produce nectar.
2. 2.

   Tick the most appropriate answer.

   1. Flowers are generally attached to the stem through a stalk called the 
      1. petiole.
      2. filament.
      3. pedicel.
      4. plumule.
   2. The calyx consists of 
      1. sepals.
      2. stamens.
      3. anthers.
      4. petals.
   3. Which of the following consists of petals that are usually large, scented and brightly coloured ?
      1. plumule
      2. petiole
      3. radicle
      4. corolla
   4. Which of the following contains small, round egg-like structures called ovules?
      1. corolla
      2. ovary
      3. androecium
      4. plumule
   5. Which part of a flower gives rise to the seeds?
      1. pollen grains 
      2. ovary
      3. ovules
      4. stigma
   6. the gynoecium consists of 
      1. stigma and anthers.
      2. anthers and filaments.
      3. stigma, pollen grains and ovary.
      4. stigma, style and ovary.
3. 3.

   Fill in the blanks.

   1. The __________________ is the outermost whorl of a flower.
   2. Plants with brightly coloured flowers are usually pollinated by __________________.
   3. __________________ contains male reproductive units called stamens.
   4. The anther consists of fine particles called __________________ which take part in reproduction.
   5. When the pollen grains are transferred from the anthers to the stigma of the same flower, or another flower of the same plant, it is called __________________ pollination.
4. 4.

   Match the columns.

   1. part of the flower that produces pollen grains	a. petiole
   2. green leaf-like structure protecting the inner parts of the flower	b. anther
   3. seeds such as rice and wheat, which have only one cotyledon	c. ovules
   4. fusion of the male reproductive cell with the egg cell	d. calyx
   5. parts of a flower that develops into seeds	e. fertilization
   6. the outer thin and leathery part of a seed	f. monocot seeds
   	g. epicarp

    

5. 5.

   Find the odd one out. Give reasons.

   1. sunflower, hibiscus, pea, grass
   2. calyx, corolla, stamen, seed
   3. rose, marigold, Vallisneria, hibiscus
   4. leaf, stigma, style, ovary
6. 6.

   State the agents of pollination for each of the following:

   1. silk cotton tree
   2. rice
   3. Rafflesia
   4. maize
   5. jasmine
   6. Hydrilla