Case Study Questions Class 6 Science Getting to Know Plants

Case Study Questions Class 6 Science Chapter 7 Getting to Know Plants

CBSE Class 6 Case Study Questions Science Getting to Know Plants. Important Case Study Questions for Class 6 Board Exam Students. Here we have arranged some Important Case Base Questions for students who are searching for Paragraph Based Questions Getting to Know Plants.

At Case Study Questions there will given a Paragraph. In where some Important Questions will made on that respective Case Based Study. There will various types of marks will given 1 marks, 2 marks, 3 marks, 4 marks.

CBSE Case Study Questions Class 6 Science Getting to Know Plants

Case study 1

Plants can be classified into three categories: herbs, shrubs and trees.Plants with green and tender stemsare called herbs. They are usually shortand may not have many branches. For example- Tomato.Some plants develop branches nearthe base of stem. The stem is hard butnot very thick. Such plants are calledshrubs. For example- lemon. Some plants are very tall and havehard and thick stem. The stems havebranches in the upper part, muchabovethe ground. Such plants are called trees. For example- mango.

Plants with weak stems that cannot stand upright but spread on the ground are called creeper, while those that take support and climb up are called Climber. These are different from the herbs, shrubs and trees.

Que. 1)………………………………………………..……………………. Is an example of herb?

(a) Mango

(b) Tomato

(c) Pumpkin

(d) Lemon

Que. 2) Plants that spread on the ground are called Climbers?

(a) True

(b) False

Que. 3) Name the plant type, in which the stems have branches in the upper part, much above the ground.

(a) Shrubs

(b) Climbers

(c) Trees

(d) Creepers

Que. 4) What kind of plants are called Creepers?

Que. 5) Briefly explain with an example, what do you mean by “shrubs?”

Answer Key

Que. 1. b)Tomato

Que. 2. b)False

Que. 3. c)Trees

Que. 4) Answer: Plants with weak stems that cannot stand upright but spread on the ground are called creeper.

Que. 5) Answer: Some plants develop branches near the base of stem. The stem is hard but not very thick. Such plants are called shrubs. For example- lemon.

Case study 2

The stem of a plant helps in upward movement of water. The water and minerals go to leaves and other plant parts attached to the stem.

The part of leaf by which it is attached to the stem is called petiole. The broad, green part of the leaf is called lamina.The lines on the leaf are calledVeins. A prominent line in the middle of theleaf is calledthe midrib. Thedesign made byveins in a leaf iscalled the leaf venation. If this design isNet-like on both sides of midrib, thevenation is reticulate. Inthe leaves of grass you might have seen that the veins are parallel to one another. This is parallel venation.

Que. 1) The middle line of the leaf is called …………………………………………………………………………………..……….

a) Lamina

b) Petiole

c)Vein

d)Midrib

Que.2)…………………………………………………………………….… is the green part on the leaf?

a) Venation

b) Midrib

c) Petiole

d) Lamina

 

Que.3) When the veins of Leaves of Grass are parallel to each other. It is called ………………………………………………………………………………………?

a) Parallel venation

b) Reticulate venation

c)Midrib

d) None of the above

Que. 4) Write the function ofstem in plants?

Que. 5) Explain Reticulate venation in leaves?

Answer Key

Que.1. d)Midrib

Que.2. d)Lamina

Que.3. a)Parallel venation

Que.4) Answer: The stem of a plant helps in upward movement of water. The water and minerals go to leaves and other plant parts attached to the stem.

Que.5) Answer: The design made by veins in a leaf is called the leaf venation. If this design is Net-like on both sides of midrib, the venation is reticulate.

Case study 3

Do this activity during day time on a sunny day. Use a healthy, well-watered plant that has been growing in the sun. Enclose a leafy branch of the plant in apolythene cover and tie up its mouth. Tie up the mouth of another empty polythene cover and keep it also in the sun. After a few hours, observe the inner surface of the covers. You’ll observe droplets of water inside it.Water comes out of leaves in the formof vapour by a process calledtranspiration. Plants release a lot of waterinto the air through this process.

Leaves also have another function, to know that,we would require a leaf, spirit, a beaker, test tube, burner, water, a watch glass and iodine solution for this activity.

Take a leaf in a test tube and pour spirit to completely immerse the leaf. Now, place the test tube in a beaker half filled with water. Heat the beaker till all the green colour from the leaf comes out into the spirit in the test tube. Take out the leaf carefully and wash it in water. Place it on a watch glass and pour some Iodine solution over it. You’ll observe that it has turned blue black, showing the presence of Starch in it.For instance, a slice of raw potato also shows the presence of starch. Potatoes get this starch from their leaves and store it. Leaves prepare their food in the presence of sunlight and a green coloured substance present in them. For this, they also use water and carbon dioxide. This process is called photosynthesis. Oxygen is given out in this process. The food prepared by leaves ultimately gets stored in different parts of plant.

Que.1) Starch is present in the ………………………………………………………………………….……….. of potatoes.

a) Stem

b) Leaves

c) Root

d) Both (b) and (c)

Que.2) Leaves have only one function that is of transpiration.

a) True

b) False

Que.3) ……………………………………………………………………….…… is given out during the process of photosynthesis?

a) Carbon dioxide

b) Water

c) Vapour

d) Oxygen

Que.4) Explain the process of transpiration?

Que.5) How do plants prepare food? Mention the process involved?

Answer Key

Que.1. b) Leaves

Que.2. b) False

Que.3. d) Oxygen

Que.4) Answer: Water comes out of leaves in the form of vapour by a process called transpiration. Plants release a lot of water into the air through this process.

Que.5) Answer: Leaves prepare their food in the presence of sunlight and a green coloured substance present in them. For this, they also use water and carbon dioxide. This process is called photosynthesis. Oxygen is given out in this process. The food prepared by leaves ultimately gets stored in different parts of plant.

Case study 4

Roots help in holding the plant firmly to the soil. Theyanchor the plant to the soil. Go to an open ground where many wildPlants are growing. Dig out a few, washthe soil off the roots and observe them.You will find that all of them have eitherthe kind of roots shown in Fig. 1or as in Fig.2. For roots of the kind shown in Fig.1, the main root is called tap root and the smaller roots are called lateral roots. Plants with roots as shown in Fig.2 do not have a main root. All roots seem similar and these are called fibrous roots.

We have learnt that roots absorbwater and minerals from the soil and the stem conducts these to leaves and other parts of the plant. The leaves prepare food. This food travels through the stem and is stored in different parts of plant. We eat some of these as roots— like carrot, radish, sweet potato, turnip and tapioca. We also eat many other parts of a plant where food is stored.

Fig. 1                            Fig. 2

Que.1) Among these plants, whose roots do we eat as vegetables?

a) Radish

b) Carrot

c) Sweet potato

d) All of the above

Que.2) A type of roots, having the main root is called ………………………………………………………………………………..……….

a) Taproots

b) Lateral roots

c) Fibrous roots

d) None of the above

Que.3) Stem holds the plant firmly to the soil?

a) True

b) False

Que.4) Briefly explain the function of the roots in plants?

Que.5) What are fibrous roots?

Answer Key

Que.1. d)All of the above

Que.2. a)Taproots

Que.3. b)False

Que.4) Answer: Roots help in holding the plant firmly to the soil. They anchor the plant to the soil. Roots absorb water and minerals from the soil and the stem conducts these to leaves and other parts of the plant. The leaves prepare food. This food travels through the stem and is stored in different parts of plant. We eat some of these as roots— like carrot, radish, sweet potato, turnip and tapioca.

Que.5) Answer: Plants with roots that do not have a main root and where all roots seem similar. These are called fibrous roots.

Case study 5

We would require one bud and two fresh flowers each, of any of the following–Datura, china rose, mustard, brinjal,Lady’s finger, gulmohur. Also a blade, aglass slide or a sheet of paper, amagnifying glass and water.Observe carefully and look atthe prominent parts of the open flower. These are the petals. Different flowers have petals of different colours.The partthat is made of small leaf-like structures, are called Sepals. To see the inner parts of the flower clearly, you have to cut it open, if its petals are joined. For example, in datura and other bell-shaped flowers, the petals have to be cut out so that the inner parts can be seen clearly. Remove the sepals and petals to seethe other parts. Study the Fig. 1 and carefully, compare and identify the stamens, anthers and pistil in your flower.The innermost part of flower is called the Pistil.

Let us now study the structure of ovary. It is the lowermost and swollen part of the pistil. We will cut this part to study what is inside! Cut the ovary in two different ways to prevent them from drying, put a drop of water on each of the two pieces of the ovary, you have cut.Observe the inner parts of the ovary using a lens. You will see somesmall bead like structures inside the Ovary. They are called ovules.

The number of sepals, petals, stamens and pistils may also be different in different flowers. Some of these parts may even be absent at times!

Que.1) Dhatura is a flower, having joined petals.

a) True

b) False

Que.2) Name the inner most part of the flower?

a) Sepals

b) Pistil

c) Ovary

d)Ovules

Que.3) The small bead like structures inside the ovary is called ……………………………………………………………………………….……..

a)Pistil

b) Ovules

c) Stamens

d) Anthers

Que.4) What are Petals and Sepals in flowers?

Que.5) Define Ovary and how we can study its structure?

Answer Key

Que.1. a)True

Que.2. b)Pistil

Que.3. b)Ovules

Que.4) Answer: The prominent parts of an open flower are called the petals. Different flowers have petals of different colours. The part that is made of small leaf-like structures, are called Sepals.

Que.5) Answer: Ovary is the lowermost and swollen part of the pistil.To study the structure of ovary, cut the ovary in two different ways to prevent them from drying, put a drop of water on each of the two pieces of the ovary, you have cut. Observe the inner parts of the ovary using a lens. You will see some small bead like structures inside the Ovary. They are called ovules.

Updated: March 12, 2022 — 12:44 pm

4 Comments

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  1. good questions you got there

  2. Thank you so much. Very helpful

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