Getting to Know Plants: Class 6 Science Q&A
33 free answers on Getting to Know Plants (Science) for Class 6 students, across CBSE, ICSE and State boards. Includes questions such as “Mention two function of stem”, “How many types of roots are there in plants? Explain.”, “Functions of Leaves”.
Question & Answer
Questions
- ScienceClass 6CBSE
Mention two function of stem
The stem is the main supporting structure of the plant. It grows above the ground and connects the roots with the leaves, flowers, and fruits. Functions of the StemThe stem carries water and minerals from the roots to different parts of the plant.It supports branches, leaves, flowers, and fruits. In some plants, stems also store food. For example, potato is a modified stem that stores food.
- ScienceClass 6CBSE
How many types of roots are there in plants? Explain.
Roots are the underground part of the plant that grow below the soil. They perform several important functions. Functions of RootsRoots anchor the plant firmly in the soil.They absorb water and minerals from the soil.In some plants, roots also store food. There are two main types of roots in plants. 1. Tap Root A tap root system has one main root that grows deep into the soil. Smaller roots branch out from the main root. Examples of ta
- ScienceClass 6CBSE
Functions of Leaves
The main function of leaves is photosynthesis, which is the process by which plants prepare their own food. During photosynthesis, leaves use: Carbon dioxide from the airWater from the soilSunlight as energyChlorophyll present in the leaves Using these components, plants produce food and release oxygen into the atmosphere. Leaves also help in transpiration, which is the loss of water vapour from the surface of leaves. This process helps in cooling the
- ScienceClass 6CBSE
Describe leaf?
A leaf is a thin, flat, and expanded part of a plant that grows from the node of a stem. Leaves are usually green in colour because they contain a pigment called chlorophyll. Leaves vary in shape and size depending on the type of plant. Some leaves are small and narrow, while others are broad and large.
- ScienceClass 6CBSE
How are the plants classified?
Plants are classified into different categories based on their height, type of stem, and branching pattern. The main groups are herbs, shrubs, trees, climbers, and creepers. 1. Herbs Herbs are small plants with soft, green, and tender stems. They usually live for a short period of time and are commonly found in gardens and fields. Examples include mint, coriander, wheat, and spinach. Herbs are often used as vegetables, spices, and medicinal plants. 2. Shrubs</p
- ScienceClass 6CBSE
1. Identify the wrong statements and correct them. (a) Anther is a part of the pistil. (b) The visible parts of a bud are the petals. (c) Lateral roots are present in a tap root. Leaves perform the function of transpiration only.
Solution: The statement is wrong – Anther is a part of the The statement is wrong – The visible parts of a bud are the The statement is The statement is wrong – Leaves perform various functions other than transpiration, such as gaseous exchange through tiny pores called stomata, photosynthesis etc.
- ScienceClass 6CBSE
1. Fill in the blanks with the terms that are listed below. Anther, male, ovary, ovule, petals, pistil, stamen, filament. Sepals, (a) , stamens and (b) are the parts of a flower. Stamen is made up of (c) and (d) and it represents the (e) part of the flower. The female part of the flower is called the (f) . The basal, swollen part of the pistil is called the (g) which contains the (h) .
Solution: petals pistil anther filament male pistil ovary ovules
- ScienceClass 6CBSE
1. Can the stem of a plant be compared with a street with two-way traffic? Give reason.
Yes, the stem of a plant can be compared with a street with two-way traffic. It is because in stem, water and mineral move in upward direction and food moves in downward direction. The stem transports water and minerals from the root to leaves and other parts of the plant (upward). The food prepared by the leaves travels through the stem to different parts of plant and roots (downward).
- ScienceClass 6CBSE
1. Will a leaf taken from a potted plant kept in a dark room for a few days turn blue black when tested for starch? Give reasons for your answer.
No, it will not turn blue black because all the starch present in the leaf would have been used up by the plant. And due to the non-availability of sunlight no starch would be synthesized in the leaves.
- ScienceClass 6CBSE
1. Boojho wanted to test the presence of starch in leaves. He performed the following steps. (1) He took a leaf and boiled it in water. He placed the leaf in a petri dish and poured some iodine over it. He did not get the expected result. Which step did he miss? Explain.
To remove the green colour of the leaf, firstly the leaf has to be boiled in water next it has to be boiled in alcohol so that chlorophyll comes out. Boojho missed the step of not boiling the leaf in the alcohol which removes the chlorophyll and therefore, he did not get the expected result (i.e. change in colour of the leaf).
- ScienceClass 6CBSE
1. Match the parts of plant given in column I with their function in column II. Column I Column II (a) Flower (i) Excretion (b) Leaf (ii) Photosynthesis (c) Stem (iii) Reproduction (d) Root (iv) Bears branches (v) Anchorage
Solution: Column I Column II (a) Flower (iii) Reproduction (b) Leaf (ii) Photosynthesis (c) Stem (iv) Bears branches
- ScienceClass 6CBSE
1. Solve the riddles given below. (a) “I have a green tender stem and I am much shorter than you. Who am I?” (b) I come out first from the seed when it is soaked in water. I provide anchorage to plants. Who am I? Write another function that I perform.
I am an ‘Herb’. Herbs are the small plants with green and tender I am ‘Root’. Root comes out first from the seed when it is soaked in Another function of root is to absorb water and mineral from the soil.
- ScienceClass 6CBSE
Fill in the blanks. (a) The small green leaves at the base of flowers are known as . (b) The swollen basal part of the pistil is the which bears the . (c) Stamen has two parts called and . (d) The young unopened flower is termed as .
sepals ovary, ovules filament, anther
- ScienceClass 6CBSE
Which of the following terms constitute the female part of the flower? (a) Sepals, petal and stamen (b) Stigma, style and ovary (c) Ovary, stamen and stigma Ovary, style and stamen
Solution: (b): Stigma, style and ovary The female reproductive part of a flower is the Carpel (pistil). It consists of stigma, style and ovary. Sepals and petals are accessory parts. Stamens are male reproductive parts of a flower.
- ScienceClass 6CBSE
Read the following sentences about photosynthesis. (i) Sunlight, carbon dioxide, chlorophyll and water are necessary. (ii) Oxygen is absorbed. (iii) Leaves carry out photosynthesis. (iv) Proteins are made during photosynthesis. Choose the correct pair of sentences that are true to photosynthesis. (a) (iii) and (iv) (b) (i) and (iii) (c) (ii) and (iv) (i) and (iv)
b): (i) and (iii) Leaves carry out photosynthesis. For photosynthesis to happen, Sunlight, carbon dioxide, chlorophyll and water are necessary. Oxygen is released during photosynthesis. Carbohydrates (glucose) are made during photosynthesis.
- ScienceClass 6CBSE
Which of the following is not a correct match? (a) Petiole: attaches leaf to stem (b) Lamina: green flat part of leaf (c) Margin: gives shape to the leaf Veins: transpiration
Solution: (d): Veins: transpiration Veins transport water, minerals and food in the leaf, and provide support to the leaf. In transpiration, water evaporates which is done by stomata of the leaves.
- ScienceClass 6CBSE
Which of the following is not the primary function of stem? (a) Conduction of water (b) Photosynthesis (c) Formation of branches Bears flowers and fruits
: Photosynthesis The primary function of leaf is Photosynthesis. Main function of stem: it holds the plant upright, forms branches, bears flowers and fruits, helps in transporting water from roots to the leaves.
- ScienceClass 6CBSE
Which of the following is the correct match between the characteristics of stem and the category of plant? (a) Weak stem which cannot stand upright: Creeper (b) Green tender stem: Shrub (c) Thick, hard stem with branching near the base: Tree Thick, hard stem with branches high on the plant: Herb
: Weak stem which cannot stand upright: Creeper Herbs are plants which are the small in size with green and tender stem which cannot stand upright. Shrubs are the medium sized plants having thick, hard stem with branches near the base. Trees are the tall plants having thick, hard stem with branches high on the plant.
- ScienceClass 6CBSE
Which of the following combination of features would you observe in grass? (a) Parallel venation and fibrous root (b) Parallel venation and tap root (c) Reticulate venation and fibrous root Reticulate venation and tap root
Solution: : Parallel venation and fibrous root Parallel venation and fibrous roots are usually found in grass, maize, wheat etc. In parallel venation, veins run parallel to one another in the leaf. Fibrous roots are thin fibre like roots which arise in groups from the base of the stem
- ScienceClass 6CBSE
Name two plants in which one has joined sepals, and the other has separate sepals.
Solution: Plants with joined sepals – Datura and cotton Plants with separate sepals – Rose and Lotus