Question:
Why do we see dew drops on leaves in the early morning?
Answer:
At night the water lost by leaves does not get evaporated and gets collected on the leaves in the form of dew drops.
Getting to Know Plants
Q 1.
Write the names of the parts of a flower in sequence, from outside to inside.
Q 2.
Name the female part of a flower. Write names of its parts and draw a diagram.
Q 4.
List few plants found around your house.
Q 5.
Why do we see dew drops on leaves in the early morning?
Q 6.
Why does white flowers bloom at night?
Q 7.
Name the part of plant which helps in holding the plant in the soil.
Q 8.
What is the function of a stem in a plant?
Q 10.
Name a plant that eats insect.
Q 11.
What are trees? Give two examples.
Q 12.
What are unisexual and bisexual flowers?
Q 13.
What are lateral roots?
Q 14.
Explain an activity to show that stem conducts water and other substances.
Q 15.
In which part of a flower you are likely to find the ovary?
Q 16.
What is transpiration?
Q 17.
Name the prominent parts of a flower.
Q 19.
What are herbs? Give two examples.
Q 21.
What is the relation between leaf venation and the type of roots?
Q 22.
What are tap roots?
Q 23.
Classify plants and give an example of each.
Q 24.
Explain an activity to test the presence of starch in a leaf.
Q 25.
Name two flowers, each with joined and separates sepals.
Q 27.
Name the process by which leaves can prepare their food.
Q 28.
Where does the photosynthesis take place in plants?
Q 29.
Name the types of roots shown in the Fig. 7.7.
Q 31.
What do you mean by a complete and incomplete flower?
Q 32.
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 33.
Name the part of the plant which produces its food. Name this process.
Q 34.
Where does the photosynthesis take place in plants?
Q 35.
Give names of two plants which have tap root.
Q 36.
Name two plants which have fibrous root.
Q 37.
What are creepers? Write an example.
Q 38.
What are unisexual and bisexual flowers?
Q 39.
Leaves need oxygen and carbon-dioxide (for photosynthesis). How do they get these gases?
Q 40.
How many kinds of plants are there?
Q 41.
Name two plants that belong to herbs.
Q 42.
Give two examples of shrubs.
Q 43.
Give two examples of trees.
Q 44.
What do you mean by leaf venation? Explain various types of leaf venation with example.
Q 45.
How many types of leaf venation are there?
Q 46.
What are fibrous roots?
Q 47.
Does the stem prepare food for any plant?
Q 48.
What are petals? Why are they generally coloured?
Q 49.
Name the various parts of pistil.
