Question:
What are sepals? What are their functions?
Answer:
The small green coloured leaf-life structures are called sepals. It protects flower when it is in stage of bud.
Getting to Know Plants
Q 2.
Name a plant that eats insect.
Q 3.
Name the part of the plant which produces its food. Name this process.
Q 4.
What are petals? Why are they generally coloured?
Q 6.
What are lateral roots?
Q 7.
What are herbs? Give two examples.
Q 8.
What is leaf venation?
Q 9.
Where does the photosynthesis take place in plants?
Q 10.
Does the stem prepare food for any plant?
Q 11.
What is the relation between leaf venation and the type of roots?
Q 12.
Give two examples of shrubs.
Q 13.
What is the function of a stem in a plant?
Q 14.
Classify plants and give an example of each.
Q 15.
What are trees? Give two examples.
Q 17.
Why does white flowers bloom at night?
Q 18.
How can one destarch the leaves of potted plant without plucking, them?
Q 19.
Explain that sunlight is essential for photosynthesis.
Q 20.
Which of the following leaves have reticulate venation?
Wheat, tulsi, maize, grass, coriander (dhania), china rose.
Q 21.
Name the part of the plant which produces its food. Name this process.
Q 22.
Name the process by which leaves can prepare their food.
Q 24.
Pitcher plant has green leaves which can prepare food by photosynthesis then why does it eat insects?
Q 25.
Leaves need oxygen and carbon-dioxide (for photosynthesis). How do they get these gases?
Q 26.
Are all the plants same in size?
Q 27.
Name two plants that belong to herbs.
Q 29.
What is transpiration?
Q 30.
What are the raw materials for photosynthesis?
Q 31.
Where does the photosynthesis take place in plants?
Q 32.
Give names of two plants which have tap root.
Q 33.
What are fibrous roots?
Q 35.
Name a plant that has underground as well as aerial (above the ground) root system.
Q 36.
If a plant has leaves with reticulate venation, what kind of roots will it have?
Q 37.
What do you mean by a complete and incomplete flower?
Q 38.
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 39.
Is it possible for you to recognise the leaves without seeing them? How?
Q 40.
Give two examples of trees.
Q 41.
If a plant has fibrous root, what type of venation are its leaves likely to have?
Q 42.
Does the stem prepare food for any plant?
Q 43.
Name the various parts of pistil.
Q 44.
What are shrubs? Give two examples.
Q 45.
What are unisexual and bisexual flowers?
Q 46.
Why are petals colourful?
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.
List few plants found around your house.
Q 49.
What are the major parts of plants?
Q 50.
How many types of leaf venation are there?
