|Table of contents|
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Q1. Correct the following statements and rewrite them in your notebook.
(a) Stem absorbs water and minerals from the soil.
Ans: Roots absorb water and minerals from the soil.
(b) Leaves hold the plant upright.
Ans: Stem hold the plant upright.
(c) Roots conduct water to the leaves.
Ans: Stem conduct water to the leaves.
(d) The number of petals and sepals in a flower is always equal.
Ans: The number of petals and sepals in a flower may not be always equal.
(e) If the sepals of a flower are joined together, its petals are also joined together.
Ans: If the sepals of a flower are joined together, its petals are separate and not joined
(f) If the petals of a flower are joined together, then the pistil is joined to the petal.
Ans: If the petals of a flower are joined together, then the pistil may or may not be joined to the petal.
Q2. Draw (a) a leaf, (b) a taproot and (c) a flower, you have studied for Table 7.3.
Q3. Can you find a plant in your house or in your neighborhood, which has a long but a weak stem? Write its name. In which category would you classify it?
Ans: Money Plant has a long but weak stem. It is a climber.
Q4. What is the function of a stem in a plant?
Ans: Following are the functions of stem in a plant:
Q5. Which of the following leaves have reticulate venation?
Wheat, tulsi, maize, grass, coriander (dhania), China rose
Ans: Tulsi, Coriander (Dhania) and China rose.
Q6. If a plant has fibrous root, what type of venation do its leaves likely to have?
Ans: Parallel venation.
Q7. If a plant has leaves with reticulate venation, what kind of roots will it have?
Q8. Is it possible for you to recognize the leaves without seeing them? How?
Ans: Yes, We can identify the type of leaves by looking at its roots. Plants having leaves with reticulate venation have tap roots while plants having leaves with parallel venation have fibrous roots.
Q9. Write the names of the parts of a flower.
Ans: The parts of a flower are sepals, petals, stamens and pistil.
Q10. Which of the following plants have you seen? Of those that you have seen, which of them have flowers?
Grass, maize, wheat, chilli, tomato, tulsi, pipal, shisham, banyan, mango, Jamun, guava, pomegranate, papaya, banana, lemon, sugarcane, potato, groundnut
Ans: I have seen all these plants. Plants with flower are
Chilli, Tomato, Tulsi, Mango, Lemon, Jamun, Guava, Pomegranate, Papaya, Banana
Q11. Name the part of the plant which produces its food. Name this process.
Ans: Leaves produce food through a process called as Photosynthesis.
Q12. In which part of a flower, you are likely to find the ovary?
Ans: Ovary is located in the lowermost and swollen part of the pistil of flower.
Q13. Name two flowers, each with joined and separated sepals.
Ans: Plants with joined sepals : Datura and Tomato flower.
Plants with separated sepals : Lotus and Rose.