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DAV Class- 6 Structure and Function of the Living Organisms – Plants Question and Answer
Something To Know
A. Fill in the blanks.
1. Maize, wheat and rice are examples of fibrous roots.
2. Ginger and potato are two examples of modified stems.
3. The main function of the leaf is to prepare food for the plant.
4. Banyan is an example of prop roots.
5. Flower is the most attractive, and colourful, part of the plant.
6. The leaves of cacti are modified into spines.
7. The leaf blade is also known as lamina.
B. Write True or False for the following statements.
1. All plants possess the tap root system.
Answer 1: False
2. The wheat and maize plants have a fibrous root system.
Answer 2: True
3. Cactus plants photosynthesise through their stems.
Answer 3: True
4. Leaves manufacture food for themselves.
Answer 4: True
5. Flower is meant for the reproduction of the plant.
Answer 5: True
6. The pistil is the female part of a flower.
Answer 6: True
7. Stigma and ovary have no role in reproduction of plants.
Answer 7: False
8. Seeds store food for the future plant.
Answer 8: True
C. Tick the correct option.
1. The roots, that are consumed as food, are-
Answer 1: potato and radish
2. The plants manufacture food through the process of-
Answer 2: photosynthesis
3. Leaves are attached to stem at the-
Answer 3: stalk
4. The total number of whorls, in a flower, is/are-
Answer 4: four
5. The reproductive organ, of a plant, is the-
Answer 5: flower
6. The part of the flower, that provides protection to the bud, before it blooms, is the-
Answer 6: sepal
D. Answer the following questions in brief.
1. Name the two main systems of a plant.
Answer 1: The root system and the shoot system
2. Name the different parts of the shoot system.
Answer 2: The different parts of the shoot system are: Stem, leaves, flowers, seeds and fruits.
3. Name different types of modified stems.
Answer 3: Stems that stores food, Stem that provides support and Stem that manufactures food.
4. State the role of spines-the modified leaves.
Answer 4: Spines act as a defence organ for protection against grazing animals.
5. Name the different parts of a flower.
Answer 5: The different parts of a flower are: Sepals, Petals, Stamens, Pistil/Carpel, Pedicel.
E. Answer the following questions.
1. State the differences between the two main systems of a plant.
Answer 1: The root system of a plant is the portion of the plant that grows below ground. It is made up of roots that absorb water and minerals from the surrounding soil. The shoot system refers to the section of the plant that is found above the soil. The stem, leaves, flowers, seeds, and fruits make up the plant.
2. Define root system. Give two functions of roots:
Answer: The roof system is that part of the plant which grows below the ground.
The two functions of roots are:
(1) It holds the plant to the soil
(2) It absorbs water, and minerals, from the soil.
3. Define shoot system. Give two functions of the stem.
Answer 3: The shoot system refers to the section of the plant that is above ground.
The stem has two purposes:
(1) It maintains the plant’s vertical position.
(2) It transports food, prepared by the leaves, to all parts of the plant.
4. How is a tap root different from a fibrous root? Give one example of each type.
Answer 4: Tap root is a single root that develops downwards into the soil. Mustard is a good example.
While Fibrous root refers to a group of roots that emerge at the same time from the stem’s base. Wheat is a good example.
5. What is a leaf? Draw a diagram showing different parts of a leaf.
Answer 5: The leaf is the green coloured, thin, broad and flat part of a plant. It grows on the shoot at a node.
6. Name any two types of stem modifications, giving one example for each type.
Answer 6: The two parts of a stamen are:
(1) Anther, which produces pollen grains that take part in reproduction.
(2) Filament, which provides support to the anther.
8. What are the functions of a fruit?
Answer: Functions of fruit are:
(1) fruits are the edible part of a plant.
(2) It protects the seed against injury and other Unfavorable climatic conditions.
(3) It stores food material, as in the case of tomato, apple and mange.
(1) It helps in the dispersal of seeds.
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