Question:
What are petals? Why are they generally coloured?
Answer:
The coloured big leaf-life structures present in flower are called petals. Petals are coloured so as to attract insects for pollination.
Getting to Know Plants
Q 1.
Write the names of the parts of a flower in sequence, from outside to inside.
Q 2.
Why do we see dew drops on leaves in the early morning?
Q 3.
List few plants found around your house.
Q 4.
What are lateral roots?
Q 6.
Name the part of plant which helps in holding the plant in the soil.
Q 7.
Why does white flowers bloom at night?
Q 9.
What is the function of a stem in a plant?
Q 11.
Name the prominent parts of a flower.
Q 13.
Name the female part of a flower. Write names of its parts and draw a diagram.
Q 14.
Name the process by which leaves can prepare their food.
Q 15.
Name two flowers, each with joined and separates sepals.
Q 16.
What are fibrous roots?
Q 17.
Name a plant that eats insect.
Q 18.
Name the part of the plant which produces its food. Name this process.
Q 20.
What are shrubs? Give two examples.
Q 21.
What are tap roots?
Q 23.
If a plant has fibrous root, what type of venation are its leaves likely to have?
Q 24.
Are all the plants same in size?
Q 25.
What are petals? Why are they generally coloured?
Q 26.
What are creepers? Write an example.
Q 27.
Can you find a plant in your house or in your neighbourhood which has a long but a weak stem? Write its name. In which category would you classify it?
Q 28.
Name two plants that belong to herbs.
Q 29.
What is leaf venation?
Q 30.
How many types of leaf venation are there?
Q 31.
Where does the photosynthesis take place in plants?
Q 32.
Give names of two plants which have tap root.
Q 33.
Does the stem prepare food for any plant?
Q 34.
Explain that sunlight is essential for photosynthesis.
Q 35.
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 36.
If a plant has leaves with reticulate venation, what kind of roots will it have?
Q 37.
What are the major parts of plants?
Q 38.
Give two examples of trees.
Q 39.
Where does the photosynthesis take place in plants?
Q 40.
What are sepals? What are their functions?
Q 43.
Explain the main functions of leaf.
Q 44.
What are unisexual and bisexual flowers?
Q 45.
What are unisexual and bisexual flowers?
Q 46.
What do you mean by a complete and incomplete flower?
Q 47.
Leaves need oxygen and carbon-dioxide (for photosynthesis). How do they get these gases?
Q 48.
What is the relation between leaf venation and the type of roots?
Q 49.
Is it possible for you to recognise the leaves without seeing them? How?
Q 50.
Name the part of the plant which produces its food. Name this process.
