CBSE Class 6 Science Getting To Know Plants Worksheet Set 06

I) Fill in the blanks :

1. Roots, stem and leaves constitute the _________________________parts of the plant.

2. Flowers and fruits are the ____________________ parts of the plant.

3. _______________________is the flat green part of a leaf.

4. _______________________is the female reproductive organ of a flower.

5. The root system consisting a main root from which lateral roots develop is called ___________________________

6. The pattern of veins on the leaf is called ____________________

7. Loss of water in the plants through stomata is called _____________________

8. A flower which has both male(stamen) and female(pistil) parts is known as a _____________________ flower.

II) Write True or False :

1. Dodder(cuscuta) is a flowering plant with a no leaf. 

2. A small plant with a green soft stem is called shrub. 

3. Pollen grains are fine dust-like particles produced inside anthers of a flower.

4.Leaves are attached to the stem at places called nodes. 

5. The stalk of a leaf is called pedicel. 

III) Name the following :

1. Two complete flowers.

2. Two incomplete flowers.

3. Two plants showing parallel venation.

4. Two climbers.

IV) Diagrams :

1. Tap root and Fibrous roots (Page :72)

2. Structure of a leaf (Fig 7.8 & 7.9 Pg :76)

Getting To Know Plants

FILL IN THE BLANKS

1 The innermost part of a flower is called ___________

2 Plants synthesis food by the process of ___________

3 Plants with green tender stems are called ____________

4 The pattern of veins on the leaf is called ____________

5 The broad green part of the leaf is called ___________

6 The part of a leaf by which it is attached to the stem is called _________

NAME THE FOLLOWING

1. Any two creepers .___________ ____________

2 Two types of root systems ______________ _____________

3. Three types of plants ___________ ________ ____________

4 Two types of venation _____________ _______________

TRUE OR FALSE

1 Ovary is a part of stem ._____________

2 The stem help in holding the plant firmly in the soil.___________

3 Leaves give out water vapour through the process of transpiration._______________

4 Plants with weak stem that cannot stand upright and spread on the ground are called ______________

5 Plants can carry out photosynthesis without carbon dioxide._______________

DEFINE THE FOLLOWING

1 Herbs

2 shrub

3 tree

4 Creeper

5 climber

6 venation

7 photosynthesis

8 transpiration

DISTINGUISH BETWEEN THE FOLLOWING

1 Taproot system and fibrous root system

2 Reticular venation and parallel venation

3 Roots and stem

4 Herbs , Shrubs and Trees

I. Fill in the blanks:

1. Roots, stem, leaves constitute the _____________ parts of the plant.

2. Flowers and fruits are the _____________ parts of the plant.

3. _____________is the flat green part of a leaf.

4. _____________ is the female reproductive organ of a flower.

5. The root system consisting a main root from which lateral roots develop is called ____________.

6. The pattern of veins on the leaf is called _____________.

7. Loss of water in the plants through stomata is called ____________.

8. A flower which has both male (stamen) and female (pistel) parts is known as a __________ flower.

II. Write True or False:

1. Dodder (cuscuta) is a flowering plant with no leaf. { }

2. A small plant with a green soft stem is called shrub.{ }

3. Pollen grains are fine dust-like particles produced inside anthem of a flower{ }

4. Leaves are attached to the stem at places called nodes.{ }

5. The stalk of a leaf is called pedicel. { }

III. Name the following :

1. Two complete flowers.

2. Two incomplete flowers.

3. Two plants showing parallel venation.

4. Two climbers.

IV. Diagrams:

1. Tap root and Fibrous roots (Page 72)

2. Structure of a leaf. fig: 7.8 & 7.9 pg.8

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1.Plants having leaves with reticulate venation have___.
(A) Fibrous roots.
(B) Supporting roots.
(C) Tap root.
(D) None of these

2.On a hot summer day the leaves of a plant drop down because
(A) The plant becomes weak.
(B) Excessive transpiration takes place.
(C) Excessive photosynthesis takes place.
D) No transpiration occurs

3.Which plant part absorbs water and minerals from the soil?

4.What do you mean by the term venation?

5.Which plant part gives out water vapours during the process of transpiration?

6.Name the term used for thick vein present in the middle of the leaf.

7.Tomato plant has a green and tender stem, it is a:
(A) Herb
(B) Shrub
(C) Climber
(D) Tree

8.Plants with weak stemsthat climb on neighbouring objects are:
(A) Herb
(B) Creeper
(C) Climber
(D) Shrub

9.Function of a root is:
(A) Preparing food.
(B) Bearing leaves
(C) Absorption of water and minerals.
(D) Conduction of water

10.Conduction of water is the function of:
(A) Leaf
(B) Stem
(C) Root
(D) Flower

11.When the venation appears as a net-like design on both sides of the midrib it is called:
(A) Parallel
(B) Simple venation
(C) Reticulate
(D) None of these

12.When a polythene bag is tied around the leaf of a plant, the water droplets appear on it due to:
(A) Perspiration.
(B) Transpiration.
(C) Evaporation.
(D) Polythene lost

13.Transpiration occurs mainlythrough the ______ of a plant.
(A) Roots.
(B) Stem.
(C) Bud.
(D) Leaves

14.Which gas is released by the plants during photosynthesis?
(A) O₂.
(B) CO₂.
(C) H₂.
(D) N₂

15.Which chemical is used to test the presence of starch?
(A) Spirit.
(B) Iodine.
(C) NaOH.
(D) Water

16.Before testing for starch, the plant is put in a dark room to:
(A) Remove the already stored starch.
(B) Make the plant unhealthy.
(C) Make the leaves yellow.
(D) Stop starch formation

17.The part of the leaf with which it is attached to the stem is:
(A) Lamina
(B) Stalk
(C) Petiole
(D) Vein

18.Green leaves prepare food in presence of sunlight using ____ and ___.
(A) Carbon dioxide and water.
(B) Water and Oxygen.
(C) Oxygen and Nitrogen.
(D) Oxygen and carbon dioxide

19.In which form is the prepared food stored in potato?
(A) Glucose
(B) Fat
(C) Starch
(D) Glycogen

20.Before testing the leaf for the presence of starch, it is covered with a black paper because
(A) Black is good absorber of sunlight.
(B) It prevents the leaf from preparing food.
(C) It will give a good starch test.
(D) It has no effect on the starch test

21.The root system in which the main root grows vertically downwards giving out lateral root is:
(A) Fibrous root
(B) Adventitious root
(C) Tap root
(D) Stilt root

22.Plants wth fibrous roots have this kind of venation in their leaves:
(A) Parallel
(B) Reticulate
(C) Lateral
(D) None of these

23.The outermost part of a flower which also encloses the bud is called:
(A) Petal
(B) Pistil
(C) Stamen
(D) Sepal

24.The innermost part of the flower is:
(A) Pistil
(B) Stamen
(C) Petal
(D) Sepal

25.Select the parts of the pistil in a flower from the following:
Stigma, style, ovary, petals, anther, filament.
(A) Stigma, petals, anther
(B) Stigma, style, ovary
(C) Anther, filament, style
(D) Stigma, ovary, anther, style

26.Ovules are present in :
(A) Ovary
(B) Stigma
(C) Style
(D) Filament

27.Which of the following leaves have reticulated venation:
Wheat, Tulsi, Maize, Grass, China rose?
(A) Tulsi, Wheat
(B) Maize, Grass
(C) Wheat, China Rose
(D) Tulsi, China Rose

28.The petals are joined in which of the following plants:
(A) Datura
(B) Gulmohar
(C) China rose
(D) Rose

29.Match the following and choose the correct answer from the code given below :
    Column I                         Column II
i) Sepals                     A) loss of water in the form of water vapours
ii) Transpiration           B) green in colour
iii) Grass                     C) flattened part of the leaf
iv) Lamina                  D) parallel venation
(A) i)-A); ii)-B); iii)-D); iv)-C
(B) i)-C); ii)-A); iii)-D); iv)-B)
(C) i)-B); ii)-A); iii)-D); iv)-C
(D) i)-A); ii)-D); iii)-B); iv)-C )

30.Plant which does not have distinct roots and stem is-
(A) Algae.
(B) Moss.
(C) Both (a) and (b).
(D) None of these

31.A plant in which leaf is modified into tendril is-
(A) Rose plant.
(B) Sunflower plant.
(C) Pea plant.
(D) None of these

32.Find the odd one out.
(A) Banyan.
(B) Rose.
(C) Mango.
(D) Neem

33.Which of the following is a true statement?
(A) The roots that grow on the stem of a plant are called fibrous roots.
(B) Stem is the underground part of the plant.
(C) The anthers carry several pollen grains.
(D) Plants can synthesize their food without sunlight.

34.The kitchen of a plant is ____.
(A) Stem.
(B) Leaf.
(C) Root.
(D) Flower

35.Transport of water and minerals in plant is done by-
(A) Root.
(B) Leaf.
(C) Stem.
(D) Flower

36.The pattern of veins on leaf is known as-
(A) Catenation.
(B) Venation.
(C) Transpiration.
(D) None of these

37.Find the odd one out.
(A) Radish.
(B) Carrot.
(C) Turnip.
(D) Cactus

38.Sweet potato is a modified________.
(A) Root.
(B) Stem.
(C) Leaf.
(D) Fruit

39.The process of losing water in the form of vapours by leaves is called_____.
(A) Photosynthesis.
(B) Transpiration.
(C) Respiration.
(D) Evaporation

40.Which of the following is not the function of roots?
(A) Prepare food for plants by photosynthesis.
(B) Absorb water and minerals from the soil.
(C) Hold the plant firmly in the soil.
(D) Prevent soil erosion

41.The part of plant that bears leaves, flowers and fruits is-
(A) Primary root.
(B) Stem.
(C) Secondary root.
(D) None of these

42.Match the items of column 'A' with the items of column 'B': 
    Column 'A'            Column 'B'
I. Grass                 (A) Shrub
II. Rose                 (B) Tree
III. Mango             (C) Creeper
IV. Cucumber (D) Herb
(A) I-B, II-A, III-C, IV-d
(B) I-D, II-A, III-B, IV-C
(C) I-C, II-D, III-A, IV-B
(D) I-C, II-A, III-B, IV-D

43.A flower with joined sepals is-
(A) Rose.
(B) Sunflower.
(C) Mustard.
(D) None of these

44.Which of the following is the male part of a flower?
(A) Pistil.
(B) Sepals.
(C) Stigma.
(D) Stamen

45.Chlorophyll is present in-
(A) Roots.
(B) Green leaves.
(C) Stem.
(D) Branches

46.Which of the following is not a flower's part?
(A) Sepals.
(B) Pistil.
(C) Lamina.
(D) Petals

47.Which of the following has fibrous root?
(A)Wheat.
(B) Peas.
(C) Radish.
(D) Neem

48.Grouping of plants is on the basis of their-
(A) Height.
(B) Stems.
(C) Branches.
(D) All the above

49.The plants with weak stem and which take support of neighbouring structures for climbing upwards are called-
(A) Creepers.
(B) Herbs.
(C) Climbers.
(D) Shrubs

50.All green plants are-
(A) Heterotrophs.
(B) Autotrophs.
(C) Herbivores.
(D) None of these

51.Small and non woody plants are known as-
(A) Trees.
(B) Shrubs.
(C) Herbs.
(D) Climbers

52.Define Transpiration.

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53.Mention two functions of a stem.

54.Name the main part of a plant, which produces its food. Name this process.

55.How are plants classified?

56.What is meant by photosynthesis?

57.What are the functions of a root

58.How can you identify the type of root system of a Plant has without pulling it out of the soil?

59.How can you justify that stem acts like a two-way street?

Q1. Differentiate between herbs and shrubs.

Q2. A boy goes to a garden and describes various types of plants. Identify the characteristics of plants on the basis of which they are classified as herbs, shrubs and plants. Give examples.

Q3. Differentiate between climbers and creepers. Give examples.

Q4. Why do some plants need support to climb upwards?

Q5. Enlist the functions of a stem.

Q6. A student keeps a twig in red ink. After few hours, he observes red lines in stem and leaves. Explain, what has happened?

Q7. Write a short note on modified stems.

Q8. Draw a well labelled diagram of a leaf.

Q9. A girl in biology laboratory observes a design on different leaves. She identified two particular kinds of pattern. Identify those patterns and write difference between two.

Q10. ‘Stem has two way traffic.’ Comment.

Q11. ‘Stem is a two way street.’ Comment.

Q12. Draw a well labelled diagram of stomata.

Q13. Write down the functions of stomata.

Q14. A boy covers a leaf with a polythene bag and leaves it for 24 hours. What will he observe and why?

Q15. Enlist all the functions of a leaf.

Q16. Mention a test to detect presence of starch in a leaf.

Q17. What is the function of veins and midrib in a leaf?

Q18. Write down the functions of roots.

Q19. Write two points of difference between tap root and fibrous roots.

Q20. If we want to identify the kind roots of a plant, how can we find out by observing the leaves?

Q21. Why is it difficult to separate the sprouted young plants from the cotton wool?

Q22. Give few examples of edible roots.

Q23. Write a short note on modified root.

Q24. Name 4 whorls of a flower.

Q25. Why are pistil and stamen very important in a plant?

Q26. Draw a well labelled diagram of a flower (vertical section).

Q27. How are fruits and seeds produced?

Q28. Why does a cactus plant have fleshy leaf like photosynthetic branches?

Q29. Why are leaves termed as the “food factories of the plant”?

Q30. Why are leaves of few plants modified into tendrils? Give examples.

I. Name the following

Question 1. The male reproductive part of the flower.
Answer: Stamen (consisting of anther and filament)
In simple words: The stamen produces pollen grains, which contain the male gametes.

Exam Tip: Remember that 'Stamen' has 'men' in it, which helps associate it with the male part.

Question 2. The female reproductive part of the flower.
Answer: Pistil or Carpel (consisting of stigma, style, and ovary)
In simple words: The pistil contains the ovary where the female egg cells are produced.

Exam Tip: Distinguish clearly between stamen (male) and pistil (female).

Question 3. The part of the plant that conducts water and minerals.
Answer: Stem (specifically through xylem tissue)
In simple words: The stem acts like a pipe, carrying water and dissolved minerals upward from roots to leaves and other parts.

Exam Tip: Mention both the stem and xylem for complete credit.

Question 4. The part of the plant that prepares food.
Answer: Leaf
In simple words: Leaves make food for the plant using sunlight, carbon dioxide, and water through photosynthesis.

Exam Tip: Leaves are often called the food factory of the plant.

Question 5. The part of the leaf which is attached to the stem.
Answer: Petiole
In simple words: The petiole is the stalk that joins the leaf blade to the stem.

Exam Tip: Do not confuse petiole with lamina (the broad green part of the leaf).

Question 6. The process of preparation of food by plants.
Answer: Photosynthesis
In simple words: Plants use light energy to convert carbon dioxide and water into glucose and oxygen.

Question 7. Small bead like structures found inside the ovary.
Answer: Ovules
In simple words: Ovules are tiny structures inside the ovary that develop into seeds after fertilization.

Exam Tip: Ovules become seeds, and the ovary becomes the fruit.

Question 8. The part of the flower that protects the bud.
Answer: Sepal
In simple words: Sepals are the green, leaf-like parts at the base of a flower that protect it before it blooms.

Exam Tip: Sepals form the outermost whorl of a flower.

Question 9. The broad part of the leaf.
Answer: Lamina (or Leaf blade)
In simple words: The lamina is the wide, flat surface of the leaf responsible for capturing sunlight.

Exam Tip: Use the term lamina for scientific accuracy.

Question 10. The gas released during photosynthesis.
Answer: Oxygen
In simple words: Plants produce oxygen as a byproduct when making their food, which is essential for respiration in living organisms.

Exam Tip: Remember that plants take in carbon dioxide and release oxygen during this process.

II. Define the following

Question 1. Transpiration
Answer: Transpiration is the biological process by which water is lost in the form of water vapour from the aerial parts of plants, mainly through microscopic pores called stomata on the leaves.
In simple words: It is basically the evaporation of water from plant leaves into the atmosphere.

Exam Tip: Always mention stomata and water vapour for full marks.

Question 2. Leaf venation
Answer: Leaf venation refers to the arrangement of veins and veinlets in the lamina or blade of a leaf. It provides mechanical support and helps in the transport of water and nutrients.
In simple words: It is the design or pattern formed by veins on a leaf.

Exam Tip: Mention the two main types (reticulate and parallel) to make your definition comprehensive.

Question 3. Creepers
Answer: Creepers are plants with weak stems that cannot stand upright on their own and therefore spread or creep horizontally along the ground.
In simple words: Plants that grow flat along the ground because their stems are too weak to stand up.

Exam Tip: Give examples like watermelon or pumpkin to strengthen your answer.

Question 4. Climbers
Answer: Climbers are plants with weak stems that take support from neighbouring structures, trees, or fences and climb upwards using special adaptations such as tendrils.
In simple words: Plants with weak stems that climb up by taking support from objects around them.

Exam Tip: Mention examples like pea plant or grapevine.

Question 5. Weeds
Answer: Weeds are unwanted, uncultivated plants that grow naturally in fields alongside cultivated crops, competing with them for water, sunlight, nutrients, and space.
In simple words: Unwanted wild plants growing in crop fields.

Exam Tip: Emphasize that they compete with main crops for resources.

III. Differentiate the following

Question 1. Tap root system and fibrous root system
Answer:
- Tap root system consists of one main prominent root (primary root) growing deep into the soil with smaller lateral roots branching off from it. Found in plants with reticulate venation (e.g., Mango, Neem).
- Fibrous root system consists of a cluster of similar-sized roots arising from the base of the stem with no main primary root. Found in plants with parallel venation (e.g., Grass, Wheat, Maize).
In simple words: Tap root has one big main root going down, while fibrous root has a bunch of thin, bushy roots of equal size.

Exam Tip: Present differences in tabular form or clear bullet points with examples.

Question 2. Reticulate venation and parallel venation
Answer:
- Reticulate venation features a net-like web or network of veins distributed all over the lamina. It is characteristic of dicotyledonous plants.
- Parallel venation features veins running parallel to one another from the base to the tip of the leaf blade. It is characteristic of monocotyledonous plants.
In simple words: Reticulate looks like a spider web, while parallel looks like railway tracks running alongside each other.

Exam Tip: Connect root types with leaf venation patterns as a bonus correlation in your answer.

IV. Answer the following questions

Question 1. Why are leaves green in colour?
Answer: Leaves are green in colour due to the presence of a green-coloured pigment called chlorophyll. Chlorophyll plays a crucial role in absorbing solar energy required for photosynthesis.
In simple words: They contain a green pigment named chlorophyll that traps sunlight.

Exam Tip: Always highlight the keyword 'chlorophyll'.

Question 2. Stem is considered as a two way street. Justify this statement.
Answer: The stem is called a two-way street because transport happens in two opposite directions:
1. Water and dissolved minerals absorbed by the roots are transported upward through the xylem to the leaves and branches.
2. Prepared food (glucose) manufactured in the leaves is transported downward and to other parts of the plant through the phloem.
In simple words: Water goes up from roots, and food goes down from leaves, making the stem a two-way transport route.

Exam Tip: Mention both xylem (upward transport of water) and phloem (transport of food) to score full marks.

Question 3. What are the functions of roots?
Answer: The primary functions of roots are:
1. Anchorage: They firmly anchor the plant securely in the soil.
2. Absorption: They absorb water and essential minerals from the soil to nourish the plant.
3. Storage: In some plants (like carrots, radishes, and turnips), roots store reserve food material.
4. Prevention of soil erosion: They bind soil particles tightly together.
In simple words: Roots hold the plant firmly, suck up water and minerals, and sometimes store food.

Question 4. Without uprooting a plant how will you identify its root system?
Answer: We can identify the root system of a plant without uprooting it by examining the venation of its leaves:
- If the leaves have reticulate venation (net-like pattern), the plant possesses a tap root system.
- If the leaves have parallel venation (veins running parallel to each other), the plant possesses a fibrous root system.
In simple words: Look at the leaf design; net-like veins mean tap roots, and parallel veins mean fibrous roots.

Exam Tip: State this universal botanical correlation clearly to impress the examiner.

Question 5. List the functions of stem.
Answer: The main functions of a stem are:
1. It provides structural support, holding branches, leaves, flowers, and fruits upright to receive maximum sunlight.
2. It conducts water and minerals from the roots upward to the leaves.
3. It transports prepared food from the leaves to all other parts of the plant.
4. In some plants, modified stems store food, water, or provide protection (e.g., potato, ginger, cactus spines).
In simple words: The stem holds the plant upright and carries water and food across different parts.

Exam Tip: Provide clear headings for each function.

Question 6. Write an activity to show that leaf prepare food and store as starch.
Answer:
Aim: To test the presence of starch in a leaf produced via photosynthesis.
Materials required: A potted plant with green leaves, beaker, water, burner, tripod stand, test tube, alcohol (ethanol), iodine solution, and a watch glass.
Procedure:
1. Pluck a green leaf from a plant that has been exposed to sunlight for a few hours.
2. Boil the leaf in water for a few minutes to kill the cells and soften it.
3. Place the boiled leaf into a test tube containing alcohol. Place the test tube in a beaker of boiling water (water bath) until the green chlorophyll pigment dissolves out completely into the alcohol, making the leaf pale white.
4. Wash the decolourised leaf carefully in warm water.
5. Place the leaf on a watch glass and add a few drops of iodine solution onto it.
Observation: The part of the leaf that was green turns blue-black in colour when treated with iodine, whereas parts kept in the dark do not show this colour change.
Conclusion: The blue-black colour confirms the presence of starch in the green leaf, proving that leaves manufacture food during photosynthesis and store it as starch.
In simple words: Boiling a leaf in alcohol removes its green color, and adding iodine turns it blue-black, proving that starch is present.

Exam Tip: Mention safety precautions (like using a water bath for heating alcohol) and the iodine test result (blue-black).