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Getting to know plants

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NCERT Solutions for Class 6 Science Chapter 4

The chapter getting to know plants introduces students to the fascinating world of plants and their crucial role in our lives. Here’s a summary of the key points NCERT Solutions for Class 6 Science Chapter 4 getting to know plants:

1. Introduction to Plants:

  • Plants are living organisms that are immovable.
  • They are mostly green in color due to the presence of chlorophyll, a pigment vital for photosynthesis.
  • Plants provide us with food, oxygen, shelter, and medicine.

2. Classification of Plants:

  • Plants are classified into three main groups based on their stem characteristics:
    • Herbs: Soft, green stems, usually small and with few branches (e.g., basil, coriander).
    • Shrubs: Hard stems that branch out near the base (e.g., rose bushes, lemon trees).
    • Trees: Tall and thick, woody stems with branches higher up (e.g., mango trees, neem trees).

3. Parts of a Plant:

  • Root: Absorbs water and minerals from the soil and anchors the plant.
  • Stem: Supports the plant, transports water and nutrients, and may store food.
  • Leaf: Makes food through photosynthesis using sunlight, water, and carbon dioxide.
  • Flower: Reproductive part of the plant that produces seeds.

4. Importance of Plants:

  • Photosynthesis: Plants absorb sunlight, water, and carbon dioxide to produce food (sugar) and release oxygen, which is essential for respiration in humans and animals.
  • Food Source: We directly consume various parts of plants like fruits, vegetables, and grains.
  • Habitat and Shelter: Plants provide homes and shelter for animals and humans.
  • Medicine: Many medicines are derived from plants or plant extracts.

5. Additional Points:

  • Plants can reproduce sexually (through seeds) or asexually (vegetatively).
  • Different plants have different adaptations to survive in various environments.

NCERT Solutions for Class 6 Science Chapter 4 Getting to know plants

Exercises

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 petals and stamens 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.

Ans : 

(a) Roots absorb water and minerals from the soil.

(b) Stem holds the plant upright

(c) stem conducts water to the leaves.

(d) The number of petals and stamens in a flower is not always equal.

(e) If the sepals of a flower are joined together, then its petals may or may not be connected.

(f) If the petals of a flower are joined together, it is not necessary that the pistil is also joined to the petals.

2. Draw (a) a leaf, (b) a taproot and (c) a flower

3. 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 : Plants with Long, Weak Stems:

  1. Money plant : This popular houseplant has long, trailing stems that often cascade or require support to climb. It falls under the category of creeper.
  2. Morning glory : This vine-like plant has long, slender stems that climb and twine around support structures. It’s also classified as a creeper.
  3. Watermelon: While not typically grown indoors, watermelon vines have long, trailing stems that spread along the ground. They also fall under the category of creeper.

4. What is the function of a stem?

Ans :
1. Provides support and structure: The stem acts as the main support system for the plant, holding it upright and allowing it to grow taller. This allows leaves to reach sunlight for photosynthesis and flowers to be positioned for pollination.

2. Conducts water and minerals: The stem has specialized tissues called xylem and phloem. Xylem transports water and minerals absorbed by the roots to different parts of the plant, including the leaves. Phloem, on the other hand, transports food (sugars) produced in the leaves to other parts of the plant for growth and energy.

3. Stores food: Some plants store food in their stems for later use. This is particularly common in underground stems like tubers (e.g., potatoes) and rhizomes (e.g., ginger).

5. Which of the following leaves have reticulate venation?
Wheat, tulsi, maize, grass, coriander (dhania), China rose

Ans : These leaves have reticulate venation:

  • Tulsi
  • Coriander (dhania)
  • China rose

6. If a plant has fibrous root, what type of venation do its leaves have?

Ans:

If a plant has a fibrous root system, its leaves are more likely to have parallel venation.

Here’s the connection:

  • Fibrous root system: This type of root system consists of many thin, branching roots of similar size, rather than a single taproot. It is commonly found in monocot plants.

Example:

  • Plants with fibrous roots and parallel venation: wheat, maize, grass, rice.

7. 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 is likely to have a taproot system.

Here’s the connection:

  • Reticulate venation: This type of leaf venation forms a network-like pattern with main veins branching out into smaller veins throughout the leaf blade. This arrangement is commonly found in dicot plants.

Examples:

  • Plants with reticulate venation and taproot systems: Tulsi, China rose, Mango, Oak

8. 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 : While there is a general association between leaf venation and root type, it’s not always possible to definitively determine whether a plant has a taproot or fibrous root system just by looking at the impression of its leaf on a sheet of paper.

Here’s why:

  1. Exceptions exist: While plants with reticulate venation are more likely to have taproots, and plants with parallel venation are more likely to have fibrous roots, there are exceptions to this rule. Some dicot plants might have fibrous roots, and some monocots might have net-like veins.
  2. Leaf impression limitations: The impression on paper only captures the vein pattern, not details about the root system. Additional information about the plant, such as its species or family, is often necessary for accurate identification of its root type.

9. What are the parts of a flower.

Ans : 1. Sepals

2. Petals

3. Stamens

4. Pistil

10. 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 : 

  • Chilli
  • Tomato
  • Tulsi
  • Peepal
  • Shisham
  • Banyan
  • Mango
  • Jamun
  • Guava
  • Pomegranate
  • Papaya
  • Lemon

11. Name the part of plant which produces food. Name the process.

Ans : The part of the plant that produces food is the leaf. The process by which plants produce food is called photosynthesis.

12. In which part of a flower, you will find the ovary?

Ans : The ovary of a flower can be found in the pistil, which is the female reproductive organ located in the center of the flower.

13. Name two plants in which one has joined sepals and the other has separate sepals.

Ans :

  1. Joined Sepals: Hibiscus (China rose)
  2. Separate Sepals: Rose

NCERT Solutions for Class 6 Science Chapter 4 getting to know plants

FAQ’S

What topics are covered in NCERT Solutions for Class 6 Science Chapter 4 Getting to know plants?

Chapter 4 of Class 6 Science covers various aspects of plants, including their parts, types, and functions.

How do NCERT Solutions for Class 6 Science Chapter 4 help in understanding plants?

These solutions provide detailed explanations and illustrations to help students understand the structure, growth, and importance of plants.

What are some key concepts related to plants discussed in NCERT Solutions for Class 6 Science Chapter 4 getting to know plants?

Concepts include the structure of roots, stems, leaves, flowers, and fruits, as well as the process of photosynthesis and the role of plants in the ecosystem.

Are there any real-life examples or activities provided in NCERT Solutions for Class 6 Science Chapter 4 to help understand plants better?

Yes, the solutions may include activities such as plant identification, observation of plant parts under a microscope, and experiments to demonstrate photosynthesis.

How can students apply the knowledge gained from NCERT Solutions for Class 6 Science Chapter 4 in their daily lives?

Students can apply their understanding of plants to activities such as gardening, identifying different plant species in their surroundings, and understanding the importance of plants in food, medicine, and the environment.

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