Question:
What is the function of a stem in a plant?
Answer:
A stem performs following functions:
(i) The stem and its branches hold leaves to get maximum sunlight.
(ii) It transports water from roots to different parts of the plant.
(iii) It transports food from leaves to different parts of the plant.
(iv) It bears leaves, flowers and fruits.
Getting to Know Plants
Q 1.
Write the names of the parts of a flower in sequence, from outside to inside.
Q 2.
List few plants found around your house.
Q 3.
Why do we see dew drops on leaves in the early morning?
Q 4.
Name the female part of a flower. Write names of its parts and draw a diagram.
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 are lateral roots?
Q 10.
What is the function of a stem in a plant?
Q 12.
Name the prominent parts of a flower.
Q 14.
What are petals? Why are they generally coloured?
Q 15.
What are tap roots?
Q 16.
Name a plant that eats insect.
Q 17.
Name two flowers, each with joined and separates sepals.
Q 18.
What are creepers? Write an example.
Q 19.
Name the types of roots shown in the Fig. 7.7.
Q 20.
What are shrubs? Give two examples.
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.
Name two plants which have fibrous root.
Q 24.
Explain the main functions of leaf.
Q 25.
If a plant has leaves with reticulate venation, what kind of roots will it have?
Q 26.
Name the part of the plant which produces its food. Name this process.
Q 27.
Name the process by which leaves can prepare their food.
Q 28.
Give names of two plants which have tap root.
Q 29.
What are fibrous roots?
Q 30.
What is the relation between leaf venation and the type of roots?
Q 31.
What are the major parts of plants?
Q 32.
How many kinds of plants are there?
Q 33.
What are unisexual and bisexual flowers?
Q 34.
Does the stem prepare food for any plant?
Q 35.
What are sepals? What are their functions?
Q 36.
Classify plants and give an example of each.
Q 38.
How many types of leaf venation are there?
Q 39.
Where does the photosynthesis take place in plants?
Q 41.
Explain an activity to show that stem conducts water and other substances.
Q 42.
Pitcher plant has green leaves which can prepare food by photosynthesis then why does it eat insects?
Q 43.
Name the male part of a flower. Write names of its parts and draw a diagram.
Q 44.
Explain an activity to test the presence of starch in a leaf.
Q 45.
Name the part of the plant which produces its food. Name this process.
Q 46.
Are all the plants same in size?
Q 47.
Name two plants that belong to herbs.
Q 48.
Give two examples of shrubs.
Q 49.
Give two examples of trees.
