[Important Q's] Class 6 Science Chapter 4 Getting to know Plants Extra Questions.
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Most Important Extra Questions for class 6th science Chapter 4 - Getting to know Plants.
# Class 6 Science Chapter 4 - Definitions :
Q. Define Herbs.
Ans. Plants with green and tender stems are called herbs. They are usually short and may not have many branches.
Q. Define Shrubs.
Ans. Plants that develop branches near the base of stem. The stem is hard but not very thick. Such plants are called shrubs. Shrubs are slightly larger than herbs.
Q. Define Trees.
Ans. Plants which are very tall and have hard and thick woody stem and stems have branches in the upper part, much above the ground, such plants are called trees.
Q. Define Creepers.
Ans. Plants with weak stems that cannot stand upright but spread on the ground are called creepers.
Q. Define Climbers.
Ans. Plants that take support & climb up are called climbers.
Q. Define Roots.
Ans. Root is that part of the plant which is found under the soil. It provides stability to the plant by anchor the plant to the soil. They also absorbs water and minerals from soil.
Q. Define Fibrous root Plant.
Ans. The plant in which all roots seem similar they are called fibrous roots plant.
Q. Define Tap root Plant.
Ans. The plant which have multiple root structure is called tap root plant.
Q. Define Lateral roots.
Ans. The smaller roots that are connected to the main tap root are called lateral roots.
Q. Define Root hair.
Ans. The fine hair like structures on the branches of lateral roots are called root hair.
Q. Define Stem.
Ans. Stem gives the structural support to the plant and helps in transportation of the water, minerals and food to different parts of the plant. It also bear leaves, branches, buds, flowers and fruits.
Q. Define Leaves.
Ans. Leaves are the most important part of the plant. Most of them are green in colour and are different in shape and size. They perform photosynthesis and transpiration.
Q. Define Petiole.
Ans. The part of leaf by which it is attached to the stem is called petiole.
Q. Define Lamina.
Ans. The broad, green part of the leaf is called lamina.
Q. Define Midrib.
Ans. A prominent line in the middle of the leaf is called the midrib.
Q. Define Veins.
Ans. The lines on the leaf are called veins.
Q. Define Leaf Venation.
Ans. The design made by veins in a leaf is called the leaf venation.
Q. Define Reticulate Venation.
Ans. In Reticulate Venation the venation in the leaf has net like structure on both sides of midrib.
Q. Define Parallel Venation.
Ans. In Parallel Venation the venation in the leaf are parallel to one another.
Q. Define Fruits.
Ans. A fruit is the soft, pulpy part of a flowering plant that contains seeds. It is formed from the Ovaries (female part) and is the end result of reproduction in flowering plant.
Q. Define Seeds.
Ans. A seed is an enclosed dormant embryo of a plant. They are found in the fruits and when sown, gives rise to a new plant.
Q. Define Monocot Seeds.
Ans. The seeds which have only one cotyledons are called Monocotyledon seed/Monocot Seed.
Q. Define Dicot Seeds.
Ans. The seeds which have two cotyledons are called Dicotyledon seed/Dicot Seed.
Q. Define Flowers.
Ans. A flower is the reproductive part of a flowering plant. Flower is made up of four important parts. The sepals, the petals, the male stamens and female Pistil.
Q. Define Petals.
Ans. Petals are the coloured leaf like structure of a flower. Different flowers have petals of different colours.
Q. Define Sepals.
Ans. Sepals are the outermost covering of a flower which is a green leaf like structures that protects the inner parts of a bud of the flower.
Q. Define Stamens.
Ans. Stamens are the male reproductive part of a flower. Each stamen is made up of two parts :
Q. Define Filament.
Ans. Filament is a tube like structure of stamen which supports the anther for pollination.
Q. Define Anther.
Ans. Anther is the head of male reproductive part of a flower. It contains pollen grains which produce male gametes
Q. Define Pistil.
Ans. Pistil is the female reproductive part of a flower. It is the innermost part of flower which is consists of stigma, style and ovary.
Q. Define Stigma.
Ans. Stigma is the sticky bulb like structure of the Pistil where the pollen lands and starts the process of fertilization.
Q. Define Style.
Ans. Style is the tube like structure of Pistil that supports the stigma for fertilization.
Q. Define Ovary.
Ans. It is the lowermost and swollen part of the pistil. It contains one or more ovules which produce female gamete (egg).
Q. Define Photosynthesis.
Ans. Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of starch and sugar.
Q. Define Transpiration.
Ans. Transpiration is a process that involves loss of water vapour through the stomata of plants.
Class 6 Science Chapter 4 Extra Questions.
Here at MSEducator.in you get Complete FREE Study Material for Class 6 Science Chapter 4 - Getting to know Plants.
Which includes :-
# Class 6 Science Chapter 4 Explanation.
# Class 6 Science Chapter 4 Important Questions.
# Class 6 Science Chapter 4 - Very Short Answer Questions :
Q. Name two plants that are herbs.
Ans.
(a) Coriander
(b) Mint
Q. Name two plants that are shrubs.
Ans.
(a) Rose plants
(b) Heena (Mehndi)
Q. Name two plants that are trees.
Ans.
(a) Mango
(b) Neem
Q. Name two plants that are Creepers.
Ans.
(a) Watermelon plant
(b) pumpkin plant
Q. Name two plants that are Climbers.
Ans.
(a) Grape plant
(b) money plant
Q. What are the major parts of plants?
Ans. Stem, root, leaves and flowers.
Q. Name the process by which leaves can prepare their food.
Ans. Photosynthesis.
Q. What are the raw materials for photosynthesis?
Ans. Sunlight, Water, Carbon dioxide.
Q. Where does the photosynthesis take place in plants?
Ans. In the leaves.
Q. Name the part of plant which helps in holding the plant in the soil.
Ans. Roots.
Q. Names of two plants which have tap root.
Ans. Gram and mustard plant.
Q. Name two plants which have fibrous root.
Ans. Wheat and Maize plant.
Q. Name a plant that eats insect.
Ans. Pitcher plant
Q. Does the stem prepare food for any plant?
Ans. Yes, Cactus stem prepare food for plant.
Class 6 Science Chapter 4 Extra Questions.
Here at MSEducator.in you get Complete FREE Study Material for Class 6 Science Chapter 4 - Getting to know Plants.
Which includes :-
# Class 6 Science Chapter 4 Explanation.
# Class 6 Science Chapter 4 Important Questions.
# Class 6 Science Chapter 4 - Short Answer Questions :
Q. How many kinds of plants are there?
Ans. There are five kinds of plants :
(a) Herbs
(b) Shrubs
(c) Trees
(d) Creepers
(e) Climbers
Q. What are herbs? Give some examples.
Ans. The Plants with green and tender stems are called herbs. They are usually short and may not have many branches.
E.g. Coriander, Mint, etc.
Q. What are shrubs? Give some examples.
Ans. Plants that develop branches near the base of stem. The stem is hard but not very thick. Such plants are called shrubs. Shrubs are slightly larger than herbs.
E.g. Rose plants, Heena (Mehndi), etc.
Q. What are trees? Give some examples.
Ans. Plants which are very tall and have hard and thick woody stem and stems have branches in the upper part, much above the ground, such plants are called trees.
E.g. mango, neem, etc.
Q. What are creepers? Write some example.
Ans. The plants with weak stem that cannot stand upright and spread on the ground are called creepers.
E.g. Watermelon plant, pumpkin plant, etc.
Q. What are climbers? Give some examples.
Ans. The plants that take support of neighboring structures and climb up are called climbers. They have weak stem.
E.g. Grape plant, money plant, etc.
Q. What are weeds?
Ans. The unwanted plants that grow in the fields with the main crops or in their surroundings are called weeds. these plants are not grown by the farmers.
E.g. Crabgrass, Chickweed, etc.
Q. Explain various kinds of roots with the help of an example.
Ans. There are two types of roots :
(a) Tap roots : The roots which have one main root and other smaller lateral roots are called tap roots.
E.g. Mustard, Gram, etc.
(b) Fibrous roots : The roots which have no main root but all the roots appear similar are called fibrous roots.
E.g. Maize, Wheat, etc.
Q. What are the functions of root ?
Ans. The functions of root are :
(a) They absorb water from the soil.
(b) The roots help in holding the plants firmly in the soil.
(c) They anchor the plant to the soil.
Q. Explain the main functions of leaf.
Ans. There are following two main functions of leaf.
(a) Transpiration : Transpiration is a process that involves loss of water vapour through the stomata of plants.
(b) Photosynthesis : The process by which leaves prepare their food from water and carbon dioxide, in the presence of sunlight is called photosynthesis.
Q. How many types of leaf venation are there?
Ans. There are two types of leaf venation :
(a) Reticulate venation : In Reticulate Venation the venation in the leaf has net like structure on both sides of midrib.
(b) Parallel venation : In Parallel Venation the venation in the leaf are parallel to one another.
Q. What is the relation between leaf venation and the type of roots?
Ans. Leaf venation and the type of roots in a plant are related as Plants with fibrous roots have parallel venation in their leaves and Plants with tap root have reticulate venation in their leaves.
Q. Why are petals colourful?
Ans. Petals are colourful because colourful petals attract insects for pollination.
Q. Can the stem of a plant be compared with a street having two way traffic? Explain.
Ans. Yes, the stem of a plant can be compared with a street with two ways traffic because just like a two-way street that allows traffic to travel in both directions, a stem has two ways mechanism of transportation in plant. i.e., one type of tubes in the stem carry water and dissolved minerals from the roots to the leaves and other parts and another type of tubes in the stem carry food prepared in the leaves to other parts of plant.
Class 6 Science Chapter 4 Extra Questions.
Here at MSEducator.in you get Complete FREE Study Material for Class 6 Science Chapter 4 - Getting to know Plants.
Which includes :-
# Class 6 Science Chapter 4 Explanation.
# Class 6 Science Chapter 4 Important Questions.
# Class 6 Science Chapter 4 - Long Answer Questions :
Q. Explain the structure of a leaf with the help of a labelled diagram.
Ans. The parts of a leaf are :
(a) Petiole : The part of the leaf by which it is attached to the stem is called petiole.
(b) Lamina : The broad, green part of the leaf is called lamina.
(c) Veins : There are various types of lines on the leaf. These lines are called veins
(d) Midrib : There is a thick vein in the middle of the leaf. This vein is called midrib.
Q. What do you mean by leaf venation? Explain various types of leaf venation with example.
Ans. The design made by veins in a leaf is called leaf venation.
There are two types of leaf venation :
(a) Reticulate venation : If the design of veins makes a net-like structure on both the sides of midrib then it is called reticulate venation.
E.g. mango leaf, Guava leaf, etc.
(b) Parallel venation : If the veins are parallel to each other or to midrib then such type of venation is called parallel venation.
E.g. Grass, Banana leaf.
Q. Explain the structure of a typical flower with the help of a diagram.
Ans. A flower is the reproductive part of a flowering plant. Flower is made up of four important parts. The sepals, the petals, the male stamens and female Pistil.
(a) Sepals : Sepals are the outermost covering of a flower which is a green leaf like structures that protects the inner parts of a bud of the flower.
(b) Petals : Petals are the coloured leaf like structure of a flower. Different flowers have petals of different colours
(c) Stamen : Stamens are the male reproductive part of a flower. Each stamen is made up of two parts Filament and Anther.
(d) Pistil : Pistil is the female reproductive part of a flower. It is the innermost part of flower which is consists of stigma, style and ovary.
Q. Explain an activity to test the presence of starch in a leaf.
Ans. Follow the steps given below :
- Take a leaf in a test tube and pour spirit till it completely covers the leaf.
- Now put the test tube in a beaker having water and Heat the beaker till all the green colour from the leaf comes out into the spirit in the test tube.
- Take out the leaf and wash it with water. Put it on a plate and pour some iodine solution over it.
The iodine solution is brown in colour but when it comes in contact with starch it turns blue-black. The iodine solution will turn blue-black when dropped on the leaf, this confirms the presence of starch in the leaf.
Q. Observe the picture and answer the following:
(a) Which process is demonstrated in the activity?
Ans. Transpiration.
(b) When will this activity show better results – on a bright sunny day or a cloudy day?
Ans. On a bright sunny day.
(c) What will you observe in the polythene bag after a few hours of setting up the activity?
Ans. Small drops of water inside the polythene cover.
(d) Mention any precaution you must take while performing this activity.
Ans. Precautions are :
a. The set-up must be airtight.
b. Polythene bag must be dry
c. The twig must be fresh with 10-12 leaves.
Class 6 Science Chapter 4 Extra Questions.
Here at MSEducator.in you get Complete FREE Study Material for Class 6 Science Chapter 4 - Getting to know Plants.
Which includes :-
# Class 6 Science Chapter 4 Explanation.
# Class 6 Science Chapter 4 Important Questions.
# Class 6 Science Chapter 4 - Value Based Questions :
Q. In a school, planting a tree on one’s birthday was introduced by the head girl. Initially, there was opposition by the students and they were not regular in bringing the sapling. Later, when everyone saw the barren land turning green, the response was good.
a. What are the benefits of planting trees?
Ans. Purify air, bring rain, prevent soil erosion, as home for birds and animals, etc.
b. What is the reason behind deforestation?
Ans. Construction of malls, building, industries and making paper, furniture, etc.
c. Which value did the head girl show?
Ans. Caring, aware, intelligent, thoughtful and have love of environment.
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