Available Answers

1. 1.

   Fill in the blanks.

   1. The ends of primary and secondary roots have hair-like structures called ____________.
   2. Fibrous roots are found in ___________ and ____________.
   3. ___________ fix the plant firmly to the soil.
   4. Banyan trees have ___________ roots which provide support to heavy branches.
   5. ___________ roots help in absorbing nutrients from the body of the host.
2. 2.

   State if the following statements are true or false. Correct the statement if it is false.

   1. The point on the stem from where leaves and branches arise is called internode.
   2. A growth in a terminal bud leads to an increase in the length of the stem.
   3. Rhizome is an enlarged, roughly spherical-shaped stem that stores food.
   4. The region between two successive notes of a stem is called node.
3. 3.

   State if the following statements are true or false. Correct the statement if it is false.

   1. The lamina has a thickened vein along its center veinlet.
   2. In reticulate venation, veins and veinlets are irregularly distributed over the entire lamina, forming a network.
   3. In a simple leaf, the leaf blade is clearly divided into many distinct parts are called leaflets.
   4. In alternate arrangement, a set of three or more leaves grows from the same node.
   5. Leaf spines help to reduce the loss of water by transpiration.
4. 4.

   Tick the most appropriate answer.

   1. Which of the following is not a function of the roots?
      1. To absorb water and minerals
      2. To anchor the plant to the soil
      3. To store food
      4. To manufacture food
   2. A flower is borne on a shot stalk called the
      1. petiole
      2. filament
      3. pedicel
      4. plumule
   3. Which of the following roots give mechanical support to the plant?
      1. Prop roots
      2. Ephiphytic roots
      3. Nitrogen-fixing roots
      4. Breathing roots
   4. The point on the stem where its leaves arise is
      1. internode
      2. node
      3. bark
      4. trunk
   5. The wide, thin, flat part of a leaf is called
      1. lamina
      2. petiole
      3. vein
      4. midrib
   6. The calyx consists of
      1. sepals
      2. stamens
      3. anthers
      4. petals
   7. The gynoecium consists of
      1. stigma and anthers
      2. anthers and filaments
      3. stigma, pollen grains and ovary
      4. stigma, style and ovary.
   8. Which part of a flower gives rise to the seeds?
      1. Pollen grains
      2. Ovary
      3. Ovules
      4. Stigma
5. 5.

   Fill in the blanks.

   1. Primary root is ____________ at its origin and ___________ at the tip.
   2. _____________ are the additional roots that arise from the lower part of the stem and fix the plant firmly in the ground.
   3. Plants with brightly-coloured flowers are usually pollinated by ____________.
   4. Cone-shaped roots that grow vertically upwards and come out of the ground are known as _____________.
   5. A _____________ is an enlarged, roughly spherical-shaped stem storing food.
   6. In a ___________ leaf, the leaf blade is clearly divided into many distinct parts.
6. 6.

   Match the following.

   DEFINITION	TERMS
   1. part of the flower that produces pollen grains	a. petiole
   2. green leaf-like structure protecting the inner parts of flower	b. anther
   3. root system where side roots develop from a main primary root	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. tap root
   6. points on the stem at which leaves arise	f. internodes
   7. ripened ovules	g. fertilization
   	h. seeds
   	i. nodes