Question 1. 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.
Solution 1. (a) Roots absorb water and minerals from the soil.
(b) stems hold the plant upright.
(c) stems conduct water to the leaves.
(d) The number of sepals and petals in a flower is usually equal.
(e) If the sepals of a flower are joined together, its petals are not compulsorily joined together.
(f) If the petals of a flower are joined together, then the pistil is not compulsorily joined to the petal.
Question 2. Draw (a) a leaf, (b) a tap root and (c) a flower, as you have studied in Table 7.3 of the textbook.
solution 2.
Question 3. Can you find a plant in your house or in your neighbourhood which has a long but weak stem? Write its name. In which category would you classify it?
Solution 3. Yes, we find a jasmine plant in our home. Jasmine is a climber.
Question 4. What is the function of a stem in a plant?
Solution 4. Following are the function of stems
- It holds the plants upright.
- Transportation of water from roots to different parts of the plant is done through the stem.
- It bears leaves, flowers and fruits.
Question 5. Which of the following leaves have reticulate venation?
Wheat, tulsi, maize, grass, coriander (dhania), china rose
Solution 5. Tulsi and china rose leaves have reticulate venation.
Question 6. If a plant has fibrous roots, what type of venation are its leaves likely to have?
Solution 6. If a plant has fibrous roots, then parallel venation is its leaves likely to have.
Question 7. If a plant has leaves with reticulate venation, what kind of roots will it have?
Solution 7. If a plant has leaves with reticulate venation, then it will have a tap root.
Question 8. Is it possible for you to recognize the leaves without seeing them? How?
Solution 8. We can get some idea of the leaves by touching and smelling but without seeing them we cannot exactly recognize the leaves.
Question 9. write the names of the parts of a flower in sequence, from outside to inside.
Solution 9. The names of various parts of a flower from outside to inside are:
(i) Sepals
(ii) Petals
(iii) Stamens
(iv) Pistil
Question 10. Which of the following plants have you seen? Of those that you have seen, which one has flowers?
Grass, maize, wheat, chilli, tomato, tulsi, pipal, shisham, banyan, mango, jamun, guava, pomegranate, papaya, banana, lemon, sugarcane, potato, groundnut
Solution 10. We have seen all the above-mentioned plants and all of them have flowers.
Question 11. Name the part of the plant which produces its food. Name this process.
Solution 11. The part of the plant which produces its food is its leaves. Leaves are also known as the kitchen of plants. The name of this process is photosynthesis.
Question 12. In which part of a flower, you are likely to find the ovary?
Solution 12. The ovary is present in the lowermost part of the pistil.
Question 13. Name two flowers, each with joined and separates sepals.
Solution 13. Name of the flowers with joined sepals
- Datura
- Loki
Name of the flowers with separate sepals
- Gurhal
- mustard