Detailed answers of all the NCERT questions of the chapter "Getting to Know Plants" are provided in the document to help you in clearing all your concepts covered in the syllabus.
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.
The roots are the part of the plant that grows underground. They have tiny hairs that help them take in water and minerals from the soil, which are essential for the plant's growth.
Roots
(b) Leaves hold the plant upright.
Ans: Stem hold the plant upright.
The stem is the main support of the plant. It holds the leaves and flowers up so they can get sunlight. If the stem is strong, the plant can stand tall.
(c) Roots conduct water to the leaves.
Ans: Stem conduct water to the leaves.
While the roots absorb water, it is the stem that transports this water all the way to the leaves where it is used for photosynthesis (the process plants use to make food using sunlight).
Parts of Plants and their Importance
(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.
In some flowers, there might be more petals than sepals or vice versa. The number of each can vary, and this diversity is what makes flowers look different from each other.
Petals and Sepals
(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 together.
(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 4.3.
Ans:
(a)
Parts of a Leaf (b)
Tap Root(c)
Parts of FlowerQ3. Can you find a plant in your house or in your neighborhood, which has a long but weak stem? Write its name. In which category will you place it?
Ans: Yes, there is a plant in our house which has a long but weak stem. It is called jasmine and it comes in the category of climbers.
Learn more about the different types of Plants like Trees, Herbs, Shrubs, Climbers, Creepers through this video:
Q4. What is the function of a stem?
Ans:
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.
Q5. Which of the following leaves have reticulate venation?
Wheat, tulsi, maize, grass, coriander (dhania), China rose
Ans: Reticulate venation refers to the arrangement of veins in a leaf where they form a web-like structure. Smaller and more delicate veins emerge from the midrib and spread in the entire leaf.
Among the provided options, three plants exhibit reticulate venation:
Leaf Venation
Q6. If a plant has fibrous root, what type of venation do its leaves have?
Ans: If a plant has a fibrous root, its leaves have parallel venation. This means that the veins in the leaves run parallel to each other, providing structural support and efficient transport of water and nutrients.
Q7. If a plant has leaves with reticulate venation, what kind of roots will it have?
Ans: If a plant has leaves with reticulate venation, it will have a tap root. In a taproot system, there is a primary, thick root (the taproot) from which smaller, lateral roots branch out.
Q8. Is it possible for you to find out whether a plant has taproot or fibrous roots by looking at the impression of its leaf on a sheet of paper?
Ans: Yes, it is possible to find whether a plant has taproot or fibrous roots by looking at the impression of its leaf on a sheet of paper. If the veins in the leaf impression exhibit parallel arrangement, the plant likely has fibrous roots. If the veins form a network or mesh-like pattern, the plant is likely to have a taproot system.
Venation and Roots
Q9. What are the parts of a flower?
Ans: The parts of a flower are sepals, petals, stamens and pistil. These parts play crucial roles in reproduction and are essential components of the plant's reproductive structures.
Parts of Flower
Q10. From the following plants, which of them have flowers?
Grass, maize, wheat, chilli, tomato, tulsi, peepal, shisham, banyan, mango, jamun, guava, pomegranate, papaya, banana, lemon, sugarcane, potato, groundnut
Ans: The plants which have flowers are grass, maize, wheat, chilli, tomato, tulsi, peepal, shisham, banyan (flowers lie inside its fruits), mango, jamun, guava, Pomegranate, papaya, banana, lemon, sugarcane, potato, groundnut
Q11. Name the part of plant which produces food. Name the process.
Ans: Leaves make food in a process called photosynthesis. It's like the plant's cooking method.
Photosynthesis
So, in short, leaves use photosynthesis to cook up their food with sunlight, air, and water.
Q12. In which part of a flower, you will find the ovary?
Ans: Ovary is located in the lowermost and swollen part of the pistil of flower.
Q13. Name two plants in which one has joined sepals and the other has separate sepals.
Ans:
Joined Sepals:
Separated Sepals:
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1. What are the different parts of a plant and their functions? |
2. How do plants reproduce? |
3. What is photosynthesis and why is it important for plants? |
4. What are the different types of plants based on their habitats? |
5. How do plants adapt to their environment? |
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