RBSE Class 6 Science Chapter 10 Question Answer Living Creatures : Exploring their Characteristics

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Living Creatures : Exploring their Characteristics Class 6 Questions and Answers

RBSE Class 6 Science Chapter 10 Living Creatures : Exploring their Characteristics Question Answer

Living Creatures : Exploring their Characteristics Class 6 Question Answer – InText

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Question 1.
How would you now categorise a seed, as living or non-living?
Answer:
We will classify seeds as living because the seed contains the embryonic stage of the plant which is in a state of dormancy and becomes active when favourable conditions arrive.

RBSE Class 6th Science Chapter 10 Question Answer – Exercise

Let us enhance our learning

Question 1.
List the similarities and differences in life cycles of plants and animals.
Answer:
Similarities in the life cycle of plants and animals—

1. There are many stages in the life cycle of both.
2. Both go through a period of growth and development.
3. The process of reproduction takes place in plants and animals for the continuity of life.

Differences in the life cycle of plants and animals—

1. The life cycle of plants starts from the seed while the life cycle of animals starts from the egg-
2. Plants grow throughout their life while animals grow only for a certain period.
3. The growth processes of animals are more complex as compared to plants.

Question 2.
The table on the next page shows some data. Study the data and try to find out examples appropriate for the conditions given in the second and third columns. If you think that an example for any of the conditions given below is not possible, explain, why?

Answer:

Question 3.
You have learnt that different conditions are required for seed germination. How can we use this knowledge for proper storage of grains and pulses?
Answer:
Water, air, soil and light are required for germination of seeds. Hence, conditions devoid of moisture, air and light are required for proper storage of cereals and pulses.

Question 4.
You have learnt that a tail is present in a tadpole but it disappears as it grows into a frog. What is the advantage of having a tail in the tadpole stage?
Answer:
In the tadpole stage, the tail helps them to swim in water.

Question 5.
Charan says that a wooden log is non-living as it cannot move. Charu counters it by saying that it is living because it is made of wood obtained from trees. Give your arguments in favour or against the two statements given by Charan and Charu.
Answer:
Charan’s argument— The wooden log is lifeless because it does not move. Charan’s argument is correct because after getting separated from the tree, it does not show any signs of living beings and it becomes a non-living.

Charu’s argument— It is living because it is obtained from the trees. Charu’s argument was correct only till the time the wooden log was attached to the tree but after getting separated from the tree, it does not remain a living being.

Question 6.
What are the similarities and distinguishing features in the life cycles of a mosquito and a frog?
Answer:
Similarities—

1. The life cycle of both begins with an egg.
2. Both have a larval stage in their life cycle.
3. The initial period of life of both is spent in water.

Distinguishing features—

1. There is a pupa stage in the life cycle of a mosquito, whereas there is no such stage in the life cycle of a frog.
2. The adult stage of a mosquito lives in the air, whereas the adult stage of a frog can live both in water and in land.

Question 7.
A plant is provided with all the conditions suitable for its growth (Fig.). Draw what you expect to see in the shoot and the root of the plant after one week. Write down the reasons.

Answer:
After one week, the shoot of the plant will be seen bending and growing upwards and the root will be seen bending and growing downwards. The reason for this is that the shoot grows towards the source of light and the root grow s m the opposite direction of the light source.

Question 8.
Tara and Vijay set up the experiment shown in the picture (Fig.). What do you think they want to find out? How will they know if they are correct?

Answer:
Tara and Vijay probably want to find out from this set-up whether the plant grows in a particular direction. They want to see in which direction the plant grows when light is received from all directions. The shoots of a plant grow upwards and the roots downwards. They can find out that they are right by observing the shoots above the surface and the roots below the surface in all three cases.

Question 9.
Design an experiment to check if temperature has an effect on seed germination.
Answer:
The following experiment can be conducted to test the effect of temperature on seed germination:

1. We take seeds of the same type and put them in three beakers of different sizes.
2. Now: puts the first beaker in the refrigerator for low temperature, the second beaker in the room for normal temperature and the third beaker in the sun for high temperature.
3. Put equal quantity of water in all the three beakers and observe at fixed time intervals.
4. Note the rate of germination and compare w hether the seeds germinate quickly and well at given temperature.

RBSE Class 6 Science Chapter 10 Important Questions

Multiple Choice Questions

1. An example of insectivorous plant is—
(a) Drosera
(b) Bougainvillea
(c) Chrysanium
(d) Sunflower
Answer:
(a) Drosera

2. Which plant’s leaves suddenly shrink when they are touched?
(a) Casuarina
(b) Mimosa
(c) Amla
(d) Petunia
Answer:
(b) Mimosa

3. Which of the following is non-living?
(a) Student
(b) Insect
(c) Mosquito
(d) Water
Answer:
(d) Water

4. Which plant closes it leaves after sunset?
(a) Petunia
(b) Neem
(c) Peepal
(d) Amla
Answer:
(d) Amla

5. What is necessary for seed germination?
(a) Air
(b) Water
(c) Light
(d) All of these
Answer:
(d) All of these

6. Which stage of mosquito lives in water?
(a) Larva and adult
(b) Larva and pupa
(c) Pupa and adult
(d) Egg and adult
Answer:
(b) Larva and pupa

7. How many stages are there in the life cycle of a silkworm?
(a) 4
(b) 3
(c) 2
(d) 5
Answer:
(a) 4

8. Correct sequence of events in the life cycle of frog is—
(a) Egg, froglet, tadpole, adult
(b) Tadpole, egg, froglet, adult
(c) Egg, tadpole, froglet, adult
(d) Adult, froglet, tadpole, egg
Answer:
(c) Egg, tadpole, froglet, adult

9. Which disease is transmitted by mosquito?
(a) Malaria
(b) Dengue
(c) Chikungunya
(d) All of these
Answer:
(d) All of these

10. (i) Coleus (ii) Petunia (iii) Calendula (iv) Zinnia, which of the following plant requires darkness to germinate?
(a) (i) and (ii)
(b) (ii) and (iii)
(c) (iii) and (iv)
(d) (i) and (iv)
Answer:
(c) (iii) and (iv)

Fill in the blanks

1. Insectivorous plants are dependent on …………………….. for their nutrition.
Answer:
insects

2. All living beings respond to …………………….. .
Answer:
stimuli

3. Removal of waste products from the body is called …………………….. .
Answer:
excretion

4. The outer covering of the seed is called …………………….. .
Answer:
seed coat

5. A cluster of eggs of a frog is known as …………………….. .
Answer:
spawn

6. Fully developed adult frogs live both in …………………….. and …………………….. .
Answer:
water, land

True/False

1. Flowers in plants bloom only during the day. (True/False)
Answer:
False

2. All living beings reproduce. (Trae/False)
Answer:
True

3. When a plant is kept upright, the shoot grows upwards and root grows downwards. (True/False)
Answer:
True

4. All seeds need light to germinate. (True/False)
Answer:
False

Match the words given in Column-I with Column-II

Question 1.

Column-I	Column-II
1. Stimulation	(a) Removal of waste material
2. Excretion	(b) To produce similar offsprings
3. Respiration	(c) Changes in the environment
4. Reproduction	(d) Breathing process

Anawer:

Column-I	Column-II
1. Stimulation	(c) Changes in the environment
2. Excretion	(a) Removal of waste material
3. Respiration	(d) Breathing process
4. Reproduction	(b) To produce similar offsprings

Question 2.

Column-I	Column-II
1. Seed	(a) Stomata
2. Frog	(b) Pupa
3. Mosquito	(c) Tadpole
4. Leaves	(d) Embryo

Answer:

Column-I	Column-II
1. Seed	(d) Embryo
2. Frog	(c) Tadpole
3. Mosquito	(b) Pupa
4. Leaves	(a) Stomata

Very Short Answer Type Questions

Question 1.
What is reproduction?
Answer:
The process of giving birth to new borns of their own kind by living beings is called reproduction.

Question 2.
What is meant by gerininated seed?
Answer:
When a sprout comes out of a seed, it is called germinated seed.

Question 3.
What do living beings need for their growth and development?
Answer:
Living beings need food (nutrition) for their growth and development.

Question 4.
How do plants respire?
Answer:
There are small pores on the surface of the leaves of a plant which are called stomata.

Question 5.
What is excretion?
Answer:
The process of excreting waste products from the body of living beings is called excretion.

Question 6.
Do plants also excrete?
Answer:
Yes, plants excrete excess water and minerals in the form of tiny droplets on the surface of leaves.

Question 7.
What is ‘stimulus’?
Answer:
Any object or any event which induces organisms to respond is called stimulus.

Question 8.
What is meant by the life cycle of a plant?
Answer:
The entire process from seed to plant and then to the next generation of seeds is called the life cycle of a plant.

Question 9.
When is a plant considered dead?
Answer:
When a plant stops growing and life activities gradually come to an end despite availability of all essential conditions, then that plant is considered dead.

Question 10.
Which stages do mosquitoes pass through in their life cycle?
Answer:
Mosquitoes pass through four stages in their life cycle— (i) egg (ii) larva (iii) pupa and (iv) adult stage.

Question 11.
Why do mosquito larvae and pupae repeatedly come to the surface of water?
Answer:
Mosquito larvae and pupae live in water and they need air to breathe, so they repeatedly come to the surface of water.

Question 12.
What is known as a spawn?
Answer:
A cluster of frog eggs which looks like a jelly-like substance is known as a spawn.

Question 13.
Which stages are found in the life cycle of a frog?
Answer:
In the life cycle of a frog. (i) egg (ii) tadpole (iii) froglet (iv) adult stages are found.

Question 14.
Who ensures the continuity of living beings?
Answer:
The process of reproduction ensures the continuity of living beings.

Question 15.
Why is reproduction essential?
Answer:
It is essential for the continuity of life.

Short Answer Type Questions

Question 1.
Do plants also show movements? Give examples.
Answer:
Although plants do not move from one place to another, they show certain types of movements. Examples –

1. An example of movement in plants is the blooming of flowers.
2. Climbers also wind themselves around any object placed close to them.

Question 2.
What are the common characteristics found in all living beings?
Answer:
The essential features of living beings are that they move, eat, grow, breathe, excrete, respond to stimuli, reproduce and die.

Question 3.
Tell about two products of excretion in animals?
Answer:
Sweat—Sweat which is released from the body as a waste material contains water and salts. Urine—Urine is also formed as a product of excretion in animals which contains urea.

Question 4.
How can the life cycle of mosquitoes be interrupted? Explain by example.
Answer:
The life cycle of mosquitoes can be interrupted by sprinkling kerosene on stagnant water. Kerosene forms a thin layer on the surface of water. This layer separates water from air. And the larvae and pupae are unable to inhale air. As a result, they die.

Question 5.
When is a living being considered dead?
Answer:
When a living being is not able to exhibit symptoms like movement, respiration, growth, reproduction, excretion despite the availability of all the resources (food, air and water) for survival, it is called dead.

Question 6.
Is sunlight essential for germination of seeds?
Answer:
Generally most seeds do not require light for germination. But after germination, sunlight is required for the growth of the bud.

Question 7.
Draw a labelled diagram of a germinated seed of a bean.
Answer:

Long Answer Type Questions

Question 1.
Do plants also respond to stimuli? Explain by example.
Answer:
Yes, plants also respond to stimuli. Example—

1. Touch-me-not (mimosa, chhui-mui, lajjalu) plants fold their leaves when we touch them.
2. Some plants close their leaves after sunset. Like in Amla. Flowers of some plants close after sunset.
3. The flowers of some plants bloom only at night.

Question 2.
Explain the role of light and darkness in seed germination with an example.
Answer:
Some seeds of flowering plants, like Coleus and Petunia, require light to germinate. Covering these seeds with soil inhibits their sprouting. Seeds of flowering plants, like Calendula and Zinnia, need darkness to germinate. These seeds should be covered with sufficient soil.

Question 3.
Discuss the contribution of Jagadish Chandra Bose.
Answer:
Jagadish Chandra Bose was an Indian scientist who did some fascinating experiments with plants. He built a machine called a crescograph to record how plants respond to stimuli like light, heat, electricity and gravity. With this machine, he could measure how fast plants grow. He also showed that plants can sense and respond to stimuli.

Question 4.
Explain the life cycle and importance of silkworm.
Answer:
Silk moth passes through four life stages— egg, larva, pupa and adult. Eggs hatch into larvae, which then grow in size. Larvae secrete thread¬like material which they wrap around themselves, before changing to pupae.

Importance—The fibre secreted by the silk moth larva is used to make silk clothes.

Question 5.
Explain movement in plants with the example of insectivorous plant.
Answer:
Another example of movement in plants is seen in insectivorous plants. Insectivorous plants are dependent on insects for their nutrition. Drosera is one of the examples of an insectivore. Drosera is featured with saucer-shaped leaves having many hair-like projections of unequal length with sticky ends. Whenever an insect enters the saucer, hairs move inward and trap the insect with their sticky ends.

Question 6.
“Even though plants do not move from one place to another, they still show motility.” Explain the statement.
Answer:
Even though plants do not move from one place to another, they do show certain types of movements. Opening of flowers is one of the examples of movement in plants. Another example of movement in plants is seen in insectivorous plants. Insectivorous plants are dependent on insects for their nutrition. Climbers also wind themselves around any object placed close to them. That means, even though plants do not move from one place to another, they do show some movements.

Question 7.
Describe the different stages found in the life cycle of frog.
Answer:
There are four stages found in the life cycle of frog—
1. Egg stage—which progresses to the embryo stage.

2. Tadpole stage—consisting of an early stage with a tail and no legs, and a late stage with hind legs.

3. Froglet stage—Gradually, the tadpoles start looking like small frogs which are called froglets. They also live in water but start spending some time on land as well. They grow bigger and their tail disappears completely. Their legs become strong which helps them to jump and come on land.

4. Adult frog stage—Frogs start living in both water and land when they become fully grown adults.

Essay Type Questions

Question 1.
Describe those common characteristics which differentiate living beings from non-living things?
Answer:
The following characteristics are found in living beings which differentiate them from non-living things—
1. Movement—All living beings show mobility. Plants do not move from one place to another but they show certain types of movements.

2. Growth—All living beings have growth in their bodies.

3. Nutrition—All living beings require nutrition (food) for their growth and development.

4. Respiration—It is essential for living beings to breathe continuously to stay alive. Through the process of breathing, air is taken in and taken out of the body. In plants, microscopic pores are found on the leaves to help in this work.

5. Excretion—All living beings remove waste materials from their bodies through excretion. In animals it is in the form of sweat and urine while plants excrete water and minerals in the form of tiny droplets from the surface of their leaves.

6. Response to stimulus—All living beings respond to changes in their environment.

7. Reproduction—All living beings reproduce. It is essential for the continuin’ of life.

Question 2.
Describe the conditions necessary for seed germination :
Answer:
Below are the conditions necessary for seed germination :
1. Water—Seeds need water for germination. Water enables seeds to complete the essential process for their growth. Water softens the outer covering of the seed which is called the seed coat, which helps the tiny embryo inside it to develop into a plant.

2. Air and soil—Seeds need air for germination. Seeds use the air present in the space between the soil particles, and this helps the seed to grow easily in the soil.

3. Light and darkness—Generally, most of the seeds do not require light for germination. After seed germination, sunlight is required for the growth of the seedling.

Question 3.
How does sunlight affect the direction of growth of different parts of a plant? Explain by drawing a labelled diagram.
Answer:

In sunlight conditions, the direction of growth of the parts of a plant varies according to the following :
1. A plant kept upright in sunlight coming from all directions—When the plant is kept upright, the root grow s downwards and the shoot grows upwards.

2. Plant placed upside down in sunlight coming from all directions—If the plant is placed upside down, the root bends and grows downwards. The shoot also bends and grows upwards.

3. Plant placed upright in sunlight coming from one direction—If the plant receives sunlight from only one direction, the shoot grows in the direction of light, while the root grows downwards.

Question 4.
Explain the life cycle of a plant by drawing a diagram.
Answer:

The life cycle of a plant begins with the germination of the seed and thereafter it passes through various stages of growth and development. These include flowering and seed production. The seeds produced during its life cycle germinate into new plants and the cycle continues.

Question 5.
Explain the life cycle of a mosquito by drawing a diagram.
Answer:

Mosquitoes pass through four stages in their life cycle. A mosquito begins its life as an egg. The egg develops into a larva. The larva develops into a pupa and the pupa transforms into an adult mosquito. The adult mosquito that emerges from the pupa rests a little on the surface of water and then flies away. The adult mosquito can live for 10 to 15 days. The adult female mosquito lays eggs directly on or near water and this cycle continues.

Question 6.
Describe the life cycle of a frog with a diagram.
Answer:

There are four stages in the life cycle of a frog. The life cycle of a frog begins with the egg stage which is found in groups in the form of a jelly like substance called spawn The larva develops into an embryo. The embryo develops into the tadpole stage which has a tailless and legless initial stage and a later stage w ith hind legs. The tadpole develops into the froglet stage in which the tail disappears completely and the legs become strong. The froglet develops into an adult frog which is capable of living both in water and on land.

RBSE Class 6 Science Chapter 10 Notes

Class 6 Science Chapter 10 Notes RBSE – Living Creatures: Exploring their Characteristics Class 6 Notes

1. The objects around us can be categorised into two types—living and non-living.
2. The essential features of living beings are that they move, eat, grow, breathe, excrete, respond to stimuli, reproduce and die. Absence of any of these features indicates that they are not living beings.
3. When a seed sprouts, it is called a germinated seed. Germination of seeds depends upon the availability of water, air and suitable light and/or dark conditions.
4. During germination of seeds, roots generally grow downwards, while shoots grow upwards.
5. A plant’s life cycle starts with seed germination, followed by several stages of its growth and development. These includes flowering and seed production. Seeds produced during their life cycle would germinate into new plants and the cycle continues.
6. The life cycle of an animal as a result of reproduction, begin with a new born that undergoes various stages of growth and development followed by an adult stage and finally death.
7. The process of reproduction ensures the continuity of all living beings.
8. Female mosquitoes are bloodsucking insects that transmit several diseases like malaria, dengue and chikungunya.
9. Mosquitoes pass through the stages of egg, larva, pupa and adult. The life stages of a frog include eggs, tadpoles, froglets and adults.
10. In some living beings, such as mosquitoes and frogs, significant changes occur during the various stages of their life cycles. These changes can be seen in body shape, structure and sometimes even in the habitat.