Answer:
A thick vein in the middle of the leaf is called midrib.
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 4.
List few plants found around your house.
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 9.
What are lateral roots?
Q 11.
Name the prominent parts of a flower.
Q 12.
What is the function of a stem in a plant?
Q 13.
What are petals? Why are they generally coloured?
Q 15.
What are creepers? Write an example.
Q 16.
What are tap roots?
Q 17.
Name a plant that eats insect.
Q 18.
Name two flowers, each with joined and separates sepals.
Q 19.
Give names of two plants which have tap root.
Q 20.
What are shrubs? Give two examples.
Q 21.
Explain the main functions of leaf.
Q 22.
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 23.
What are the major parts of plants?
Q 24.
Name the process by which leaves can prepare their food.
Q 26.
Name the types of roots shown in the Fig. 7.7.
Q 27.
Name two plants which have fibrous root.
Q 28.
If a plant has leaves with reticulate venation, what kind of roots will it have?
Q 29.
How many kinds of plants are there?
Q 30.
What are fibrous roots?
Q 31.
Classify plants and give an example of each.
Q 32.
In which part of a flower you are likely to find the ovary?
Q 33.
Are all the plants same in size?
Q 34.
What is leaf venation?
Q 35.
Does the stem prepare food for any plant?
Q 37.
What are unisexual and bisexual flowers?
Q 38.
What is the relation between leaf venation and the type of roots?
Q 39.
Name the male part of a flower. Write names of its parts and draw a diagram.
Q 40.
Which of the following leaves have reticulate venation?
Wheat, tulsi, maize, grass, coriander (dhania), china rose.
Q 41.
Name the part of the plant which produces its food. Name this process.
Q 43.
What are trees? Give two examples.
Q 44.
Name a plant that has underground as well as aerial (above the ground) root system.
Q 45.
Why are petals colourful?
Q 46.
Leaves need oxygen and carbon-dioxide (for photosynthesis). How do they get these gases?
Q 47.
What are sepals? What are their functions?
Q 48.
Name various parts of stamen.
Q 50.
What are herbs? Give two examples.
