Question:
Explain various kinds of roots with the help of an example.
Answer:
There are following two types of roots:
(i) Tap roots: The roots which have one main root and other smaller lateral roots are called tap roots. For example, mustard plant, gram.
(ii) Fibrous roots: The roots which have no main root but all the roots appear similar are called fibrous roots. For example, maize, wheat.
Getting to Know Plants
Q 2.
Name a plant that eats insect.
Q 3.
Name the part of the plant which produces its food. Name this process.
Q 4.
What are petals? Why are they generally coloured?
Q 5.
What is leaf venation?
Q 6.
What are lateral roots?
Q 7.
What are herbs? Give two examples.
Q 8.
What is the relation between leaf venation and the type of roots?
Q 9.
Does the stem prepare food for any plant?
Q 11.
Where does the photosynthesis take place in plants?
Q 12.
How can one destarch the leaves of potted plant without plucking, them?
Q 13.
Give two examples of shrubs.
Q 14.
Name the process by which leaves can prepare their food.
Q 15.
What is the function of a stem in a plant?
Q 16.
Name two plants that belong to herbs.
Q 17.
Classify plants and give an example of each.
Q 19.
What are trees? Give two examples.
Q 20.
Pitcher plant has green leaves which can prepare food by photosynthesis then why does it eat insects?
Q 21.
Explain that sunlight is essential for photosynthesis.
Q 22.
Name the part of the plant which produces its food. Name this process.
Q 23.
Are all the plants same in size?
Q 25.
What is transpiration?
Q 26.
Where does the photosynthesis take place in plants?
Q 27.
Why does white flowers bloom at night?
Q 28.
Leaves need oxygen and carbon-dioxide (for photosynthesis). How do they get these gases?
Q 29.
Which of the following leaves have reticulate venation?
Wheat, tulsi, maize, grass, coriander (dhania), china rose.
Q 31.
What are shrubs? Give two examples.
Q 32.
If a plant has leaves with reticulate venation, what kind of roots will it have?
Q 33.
What are the raw materials for photosynthesis?
Q 34.
Give names of two plants which have tap root.
Q 35.
What are fibrous roots?
Q 36.
Does the stem prepare food for any plant?
Q 37.
Name a plant that has underground as well as aerial (above the ground) root system.
Q 38.
Correct the following statements and rewrite them in your notebook.
(a) Stem absorbs water and minerals from the soil.
(b) Leaves hold the plant upright.
(c) Roots conduct water to the leaves.
(d) The number of sepals and petals in a flower is always equal.
(e) If the sepals of a flower are joined together, its petals are also joined together,
(f) If the petals of a flower are joined together, then the pistil is joined to the petal.
Q 39.
Give two examples of trees.
Q 40.
What do you mean by a complete and incomplete flower?
Q 41.
If a plant has fibrous root, what type of venation are its leaves likely to have?
Q 45.
Why are petals colourful?
Q 46.
Is it possible for you to recognise the leaves without seeing them? How?
Q 47.
Name the various parts of pistil.
Q 48.
What are the major parts of plants?
Q 49.
Name various parts of stamen.
Q 50.
What are unisexual and bisexual flowers?
