Question:
Leaves need oxygen and carbon-dioxide (for photosynthesis). How do they get these gases?
Answer:
Leaves take in these gases from atmosphere through small pores present on them called stomata.
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 3.
Why do we see dew drops on leaves in the early morning?
Q 5.
List few plants found around your house.
Q 6.
Why does white flowers bloom at night?
Q 8.
Name the part of plant which helps in holding the plant in the soil.
Q 9.
What is the function of a stem in a plant?
Q 12.
What are lateral roots?
Q 13.
What are creepers? Write an example.
Q 14.
Name a plant that eats insect.
Q 15.
Name the types of roots shown in the Fig. 7.7.
Q 16.
Name the prominent parts of a flower.
Q 17.
What are trees? Give two examples.
Q 18.
What are petals? Why are they generally coloured?
Q 20.
What are tap roots?
Q 21.
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 22.
In which part of a flower you are likely to find the ovary?
Q 23.
Give names of two plants which have tap root.
Q 24.
Name two plants which have fibrous root.
Q 25.
What are sepals? What are their functions?
Q 26.
What is the relation between leaf venation and the type of roots?
Q 27.
Name the part of the plant which produces its food. Name this process.
Q 28.
Name two flowers, each with joined and separates sepals.
Q 29.
Classify plants and give an example of each.
Q 30.
Pitcher plant has green leaves which can prepare food by photosynthesis then why does it eat insects?
Q 31.
Name two plants that belong to herbs.
Q 32.
Give two examples of trees.
Q 33.
What is transpiration?
Q 34.
Name the process by which leaves can prepare their food.
Q 35.
What are the raw materials for photosynthesis?
Q 36.
Where does the photosynthesis take place in plants?
Q 37.
What are fibrous roots?
Q 38.
Does the stem prepare food for any plant?
Q 39.
Name various parts of stamen.
Q 40.
What do you mean by leaf venation? Explain various types of leaf venation with example.
Q 41.
If a plant has fibrous root, what type of venation are its leaves likely to have?
Q 42.
What are the major parts of plants?
Q 43.
How many kinds of plants are there?
Q 44.
Explain the main functions of leaf.
Q 45.
What do you mean by a complete and incomplete flower?
Q 46.
How can one destarch the leaves of potted plant without plucking, them?
Q 47.
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 48.
If a plant has leaves with reticulate venation, what kind of roots will it have?
Q 49.
Is it possible for you to recognise the leaves without seeing them? How?
Q 50.
How many types of leaf venation are there?
