Life Process | Unit-5 | Science Notes | Class 5

Class 5 Notes of Science subject, Category – Science and Environment Education, Unit:5 – “Life Process”.

Under category ‘Science and Environment Education’ of Class 5 Science subject Unit:5 – “Life Process”, Students and teachers can find the notes and solutions of fill in the blanks, true and false statements, definitions, match the followings, definitions, give reasons, question answers, order the alphabets to make meaningful words, glossary and extra important questions.

EXERCISE:

1. Fill in the blanks using the words given.

urineplantsoxygenenergy
carbon dioxidekidneyresinsfood chain

a. All the living beings obtain energy from food.

b. Plants take carbon dioxide during the photosynthesis.

c. Oxygen gas is needed for the process of respiration.

d. Plants and animals help to balance oxygen and carbon dioxide in the environment.

e. The kidney filters blood and removes out in the form of urine.

f. Resins are the waste materials of plants.

g. Kidney is the main excretory organ of animals.

h. The process of eating and being eaten is called food chain.

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2. Write ‘T’ for true and ‘F’ for false statements.

a. Herbivores can prepare their food themselves. F

b. Animals and plants do not depend upon each other. F

c. Plants need air and water for their growth. T

d. All plants can prepare food themselves. F

e. Lungs, kidneys and skin form the excretory system. T

f. Plants respire through xylem and phloem. F

g. Carnivores eat plants and herbivores eat carnivore. F

h. Microbes convert dead and decayed matters into simple form. T

3. Choose the correct answer.

a. Nutrition is the process of consuming food for energy. (Nutrition/Respiration/Digestion)

b. Oxygen helps in the combustion of food to release energy. (Oxygen/Carbon dioxide/Water vapour)

c. Plant do not need oxygen (oxygen/carbon dioxide/water) for photosynthesis.

d. Phloem transports food materials from leaves to different parts of the plant. (Xylem/Phloem/Root)

e. Mucus is a waste material of our body. (Mucus/Blood/Oxygen)

f. Circulatory system acts as internal transportation in an animal’s body. (Circulatory/Excretory/Respiratory)

g. The crow is a Omnivore. (Carnivore/Herbivore/Omnivore)

h. Microbes convert dead and decayed matters into minerals. (oxygen/carbon dioxide/minerals)

4. Match the following.

MushroomPlants
MicrobesSaprophytes
ExhalationLungs
Excretory organCarbon dioxide
ReproductionDecomposers
AutotrophsBirth

Answer:

MushroomSaprophytes
MicrobesDecomposers
ExhalationCarbon dioxide
Excretory organLungs
ReproductionBirth
AutotrophsPlants

5. Define the following terms.

a. Life processesf. Reproduction
b. Nutritiong. Autotrophs
c. Respirationh. Heterotrophs
d. Internal transportationi. Saprophytes
e. Excretionj. Parasites

a. Life process:- The important living activities performed in living organisms are called life process.
#What do you mean by Life process?

b. Nutrition:- The process of consuming food to get energy is called nutrition.
#What do you mean by Nutrition?

c. Respiration:- The process of breaking down of food materials into simpler food materials with the release of energy is called respiration.
#What do you mean by Respiration?

d. Internal Transportation:- The process of supplying food to each and every parts of the body is called internal transportation.
#What do you mean by Internal Transportation?

e. Excretion:- The process of removing waste materials our from the body is called excretion.
#What do you mean by excretion?

f. Reproduction:- The process of producing their own kinds is called reproduction.
#What do you mean by reproduction?

g. Autotrophs:- The organisms which can make their food themselves are called autotrophs.
#What do you mean by autotrophs?

h. Heterotrophs:- The organisms which depend on plants and other animals for food are called heterotrophs.
#What do you mean by heterotrophs?

i. Saprophyte:- Those plants that live on dead organisms and get their food from them are called saprophyte.
#What do you mean by Saprophyte?

j. Parasites:- Those plants and animals that live on other living organisms and get their food from them are called parasites.
#What do you mean by Parasites?

6. Give reasons.

a. Why is a mushroom saphrophyte?

Answer: Mushroom is a saprophyte because it lives on dead organisms and get food from them.

b. Why is tiger a carnivore?

Answer: A tiger is a carnivore because it eats flesh of other animals.

c. Why do we need internal transportation?

Answer: We need internal transportation to supply food, oxygen, blood and other necessary materials to all the parts of our body.
Or,
We need internal transportation because each and every parts of our body needs energy to live.

d. Why can not plants survive if there is no carbon dioxide?

Answer: Plants can not survive if there is no carbon dioxide because plants can not prepare their own food without carbon dioxide.

7. Answer the following questions.

a. How is carbon dioxide obtained by plants?

Answer: Carbon dioxide is obtained by plants from the atmosphere (by animals) through the small pore called stomata of the leaves.

Plants take carbon dioxide and throw oxygen through the leaves.

b. What are the things needed by plants to prepare food?

Answer: Carbon dioxide, sunlight and water are the things needed by the plants to prepare food.

c. What are the four life processes in living things?

Answer: The four life process in living things are 1. Respiration, 2. Excretion, 3. Internal Transportation and 4. Nutrition.

d. How do plants depend on animal?

Answer: Plants depend on animals for carbon dioxide and nutrition.

e. How are plants and animals related to each other?

Answer: Plants and animals are related each other by exchanging gases (Carbon dioxide and Oxygen) during respiration and photosynthesis.

f. Why is reproduction necessary?

Answer: Reproduction is necessary for the continuity of life.

g. What is the function of blood in our body?

Answer: The function of blood in our body is to transport food, oxygen and other necessary materials to all parts of the body.

h. Give two examples of the following.

i. Autotrophsii. Herbivoresiii. Carnivores
iv. ParasitesSaprophytes

Answers:

i. Autotrophs:- The two examples of the autotrophs are rose and sunflower.

ii. Herbivores:- The two examples of the herbivores are goat and cow.

iii. Carnivores:- The two examples of the carnivores are tiger and lion.

iv. Parasites:- The two examples of the parasites are louse and leech.

v. Saprophytes:- The two examples of the saprophytes are fungi and bacteria.

8. Order the alphabets to make meaningful words.

a. TRINOITNUb. SPIREIONRATc. TERIONCEX
d. LOBODe. ENGOYXf. CUDTIONRROPE

Answer:

a. NUTRITIONb. RESPIRATIONc. EXCRETION
d. BLOODe. OXYGENf. REPRODUCTION

GLOSSARY:

Exhalation – breathing out. (#exhalation meaning in Nepali language is श्वास् छोड्ने.)

Inhalation – breathing in. (#inhalation meaning in Nepali language is श्वास् लिने/लिनु.)

Consuming – using up. (#consuming meaning in Nepali language is उपभोग गर्दै.)

Transportation – means of movement. (#transportation meaning in Nepali language is यातायात.)

Stimuli – causes of response to something. (#stimuli/stimulus meaning in Nepali language is उत्तेजना, उत्तेजक.)

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