class 7 cbse science worksheet

8/12/2019 class 7 cbse Science Worksheet

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CBSE Worksheet-01

Class – VII Science (Nutrition in Plants)

1. Plants prepare their food by the process of

a. Respiration

b. Photosynthesis

c. Transpiration

d. All of these.

2. The organism that can prepare their own food are called

a. Heterotrophs

b. Consumers

c. Decomposers

d. Autotrophs

. !hich of the following is not re"uired by plant for food synthesis#

a. !ater

b. $%ygen

c. Carbon dio%ide

d. Chlorophyll

&. !hich one is an insecti'orous plant#

a. (anyan tree

b. Cuscuta

c. Pitcher plant

d. )eem plant

*. +atch the following.

Column A Column (

a. Autotrophs i. Tiger

b. Heterotrophs ii. +ushroom

c. Carni'ores iii. Cuscuta

d. ,aprophytes i'. -reen plants

e. Parasite '. Animals




. /ill in the blan0s

a. -reen plants are called since they synthesi3e their own food.

b. $%ygen is released by plants during .

c. li'e on dead and decaying animals.

d. is the green coloured pigments present in lea'es.

e. The food synthesi3ed by the plants is stored as .

4. !hat is photosynthesis#

5. Distinguished between parasite and saprophytes.

6. !hat are insecti'orous plants# -i'e two e%amples.

17. $bser'e the diagrams of organisms gi'en below. )ame them and write their category.

8A9 8(9 8C9




Answer ke

1. b

2. d

. b

&. c

*. 8a9 : 8i'9 8b9 : 8'9 8c9 : 8i9 8d9 : 8ii9 8e9 : 8i'9.

. 8a9 Autotrophs 8b9 photosynthesis 8c9 saprophytes 8d9 chlorophylls8e9 starch

4. The process by which green plants synthesis their food using sunlight carbohydrates

water and chlorophyll is called photosynthesis.

5. Those organisms that obtain their food from other organism by harming them are

called parasite. /or e%ample Cuscuta lice mos"uito. Those organisms that obtain food

from dead and decaying materials are called saprophytes. /or e%ample bacteria and

fungi.

6. Those plants that eat insects by trapping them are called insecti'orous plants. They

obtain protein from insects. /or e%ample Pitcher plants and Drosophila.

17. 8A9 )ame +ushroom.

Category ,aprophytes.

8(9 )ame : Pitcher plant.

Category : ;nsecti'ores.

8C9 )ame : Cuscuta.

Category : Parasites.




CBSE Worksheet-02


1. In the process of photosynthesis, the gas given out by green leaves is

a. Oxygen

b. Carbon dioxide

c. Nitrogen

d. Ozone

2. To test the presence of starch by iodine, the green leaf is first boiled in alcohol to

a. issolve chlorophyll

b. !e"ove starch

c. #a$e the leaf soft

d. #a$e the leaf transparent

%. &hich of the follo'ing is an insectivorous plant(

a. Cuscuta

b. Croton

c. Nepenthes

d. )ichen

*. +lant eating ani"als are called

a. O"nivorous

b. Carnivorous

c. erbivorous

d. Insectivorous

-. #atch the follo'ing

Colu"n / Colu"n 0

a. xchange of gases i. !hizobiu"

b. Nitrogen ii. Chlorophyll

c. /utotrophs iii. to"ata

d. O"nivores iv. 3reen plants

e. +hotosynthesis v. 0ear




4. &rite T for true and 5 for false state"ents.

a. 3reen plants prepare their food hence they are /utotrophs.

b. Carbon dioxide gas is released in the process of photosynthesis.

c. Carnivores are flesh eating ani"als.

d. #inute pores on the leaf surface are called sto"ata.

e. Cuscuta is an insectivorous plant.

6. &hat is the "ode of nutrition in plants(

7. &hat is sy"biotic relationship( o' it benefits the organis"s(

8. &hy green leaf is boiled in alcohol before testing it for starch.

19. !earrange the letters to find out the 'ords related to plant nutrition.

a. !O+ :)C )O

b. ;N)I ;N 3T

c. T !/&

d. TO /#T/




Answer ke

1. a

2. a

%. c

*. d

-. <a= > <iii=, <b= > <i=, <c= > <iv=, <d= > <v=, <e= > <ii=.

4. <a= T <b= 5<c= T <d= T <e= 5.

6. The "ode of nutrition in plants is autotrophic. +lants prepare their food by the

process of photosynthesis using inorganic substance.

7. It is the relationship bet'een t'o organis"s in 'hich both organis"s get benefited

fro" each other. y"biotic relationship bet'een algae and fungi is called lichen.

8. 3reen leaf is boiled in alcohols for testing the starch to dissolve the chlorophyll

present in the leaves. /fter boiling in alcohols leaf 'ill lose its green colour.

19. <a= C )O!O+ :))

<b= ;N)I3 T

<c= &/T !

<d= TO#/T/




CBSE Worksheet-03


1. Green pigments present in the leaves are called

a. Leucoplasts

b. Chloroplasts

c. Chromoplast

d. Amphiplast

2. Which one is saprophytic organism?

a. Neem plant

b. Mushroom

c. Cuscuta

d. itcher plant.

!. "nsectivorous plants are #ound mostly in areas $hich are

a. %ry and sandy

b. Wet and marshy

c. Nitrogen de#icient

d. Nitrogen rich

&. '(change o# gases in leaves ta)es place through

a. *tomata

b. Lenticels

c. 'pidermis

d. Guard cells

+. Match the #ollo$ing

Column A Column ,

a. -erbivores i. Amarbel

b. Carnivores ii. east

c. /mnivores iii. Co$

d. *aprophytes iv. Lion

e. arasite v. Cat




0. ill the blan)s $ith suitable $ords.

a. %uring photosynthesis solar energy is trapped by the pigment called 33333333333.

b. 33333333333333 is the ultimate source o# energy.

c. Gas released during photosynthesis is 33333333333333333333.

d. lant eating animals are called 3333333333333333.

e. Minute pores on lea# sur#ace #or e(change o# gases are )no$n as 33333333333333.

4. What are -eterotrophs? Give t$o e(amples.

5. What are nutrients? Name main nutrients.

6. Why is sun said to be ultimate source o# energy?

17. Name the #ollo$ing.

a. A parasitic plant $hich is devoid o# leaves having yello$ slender tubular stem.

b. A solution used to test the presence o# carbohydrates.

c. A plant that has both autotrophic and heterotrophic nutrition.

d. 8he by $hich organism obtain energy #rom the digested #ood.




Answer ke

1. b

2. b

!. c

&. a

+. 9a: ; 9iii: 9b: ; 9iv: 9c: ; 9v: 9d: ; 9ii: 9e: ; 9i:.

0. 9a: Chlorophyll 9b: *un9c: /(ygen 9d: -erbivores 9e: *tomata.

4. 8he living organisms that obtain their #ood directly or indirectly #rom plants are called

-eterotrophs. "t includes all animals human dog and horse.

5. 8he components o# #ood that provides us energy to $or) to gro$ and gives us

resistance against disease are called nutrients. Main nutrients are carbohydrates #ats

proteins vitamins and minerals

6. *un is the ultimate source o# energy as all organisms obtain their #ood #rom plants and

plants obtain energy #rom sun during photosynthesis. 8he energy present in coal and

petroleum are also #rom sun.

17. 9a: Cuscuta

9b: "odine solution

9c: itcher plant

9d: <espiration.




CBSE Worksheet-04


1. The green colour in plants is due to a pigment called

a. Xanthophylls

b. Chlorophyll

c. Protein

d. Hemoglobin

2. The balance between CO 2 and O 2 is maintained by

a. Respiration

b. Transpiration

c. Photosynthesis

d. Translocation

3. hich o! the !ollowing is an omni"orous organism#

a. Horse

b. Cow

c. $u!!alo

d. %og

&. Rate o! photosynthesis is not dependent upon

a. ater

b. Carbon dio'ide

c. Temperature

d. O'ygen

(. )atch the !ollowing

Column * Column $

a. +ichens i. Herbi"ores

b. Pitcher plant ii. Parasitic

c. *marbel iii. ,nsecti"ores

d. %ear i". -'change o! gases

e. tomata ". ymbiotic association




/. rite T !or true and 0 !or !alse statements.

a. Plants obtain nitrogen !rom soil.

b. Human being is an omni"orous organism.

c. Plant inta e carbon dio'ide during respiration.

d. olar energy is captured by lea"es.

e. )ushroom is a saprophytic organism.

. hat is parasitic nutrition# i"e two e'amples.

4. 5ame the raw materials re6uired !or photosynthesis.

7. hy do organisms need to ta e !ood#

18. Classi!y the !ollowing organism as herbi"ores9 carni"ores and omni"ores.

%og9 Cat9 Human beings9 -lephant9 Crow9 Cow9 horse9 deer9 Tiger9 +ion.




Answer ke

1. b

2. c

3. d

&. d

(. :a; < :";9 :b; < :iii;9 :c; < :ii;9 :d; < :i;9 :e; < :i";.

/. :a; T :b; T:c; 0 :d; T :e; T.

. ,t is a type o! heterotrophic nutrition in which one organism obtains their !ood !rom

other organism by harming them but not illing. The organism that obtains !ood is

called parasite and other organism is called host. Cuscuta9 mos6uito.

4. 0ollowing thing are re6uired !or photosynthesis=

a. Carbon dio'ide

b. ater

c. Chlorophylld. unlight

7. Organisms need !ood to obtain energy !or "arious metabolic acti"ities and to maintain

the body parts !or wear and tear. ,t also pro"ides nutrients !or protection against the

disease.

18.

Herbi"ores Carni"ores Omni"ores

-lephant Tiger %og

Horse +ion Cat

Cow Human beings

Crow




CBSE Worksheet-05

Class – VII Science (Nutrition in Animals)

1. What is the mode of nutrition in animals?

a. Heterotrophic

b. Autotrophic

c. Symbiotic

d. All of these.

2. Which of the following is the longest part of the digestive system?

a. Large intestine

b. Small intestine

c. Oesophagus

d. ectum

3. !ile "uice secreted by the liver plays an important role in the digestion of

a. #rotein

b. $arbohydrates

c. $ellulose

d. %ats

4. %inger&li'e pro"ection called villi are found in the inner wall of

a. Small intestine

b. Large intestine

c. ectum

d. #haryn(

5. )atch the following

$olumn A $olumn !

a. Liver i. Acid release

b. Large intestine ii. elease of faecal matter

c. ectum iii. Absorption of digested food

d. Stomach iv. !ile release

e. *illi v. Absorption of water




6. %ill in the blan's.

a. Saliva is secreted in the mouth by &&&&&&&&&&&&&&&&.

b. Largest gland in human body is &&&&&&&&&&&&&&&&&.

c. +ongue help in &&&&&&&&&&&&&&& and &&&&&&&&&&&.

d. ,nsulin is released by &&&&&&&&&&&&&&&&&.

e. H$l is released by &&&&&&&&&&&&&&&& in the stomach.

7. What is mastication?

8. What are en-ymes? ive one e(ample.

9. What is digestion? Why it is important?

10. /ame the en-yme released from the following glands in human digestive system.

a. Salivary glands

b. astric glands

c. #ancreas

d. Liver




Answer ke

1. a

0. b

. d

2. a

3. 4a5 6 4iv57 4b5 6 4v57 4c5 6 4ii57 4d5 6 4i57 4e5 6 4iii5.

8. 4a5 Salivary glands 4b5 Liver4c5 $hewing7 mi(ing 4d5 #ancreas 4e5 astric gland.

9. +he process of chewing of food is called mastication. ,n this process7 saliva is

mi(ed with food.

:. ;n-ymes are bio&catalyst that helps in digestion of food. +hey are released from

the endocrine glands present in different parts of digestive system. %or e(ample

pepsin is released from gastric gland help in digestion of protein.

<. +he mechanism of brea'ing down comple( organic foods into simpler form by the

action of en-yme is called digestion. ,t is essential for utili-ation of food

components to obtain energy and maintenance of body.

1=. ;n-yme released from

a. Salivary glands 6 Salivary amylase.

b. astric glands & pepsin

c. #ancreas& pancreatic amylase7 lipase and trypsin.

d. Liver 6 !ile salts.




CBSE Worksheet-06


1. Amoeba capture food with the help of

a. Tentacles

b. Villi

c. Pseudopodia

d. Food cup

2. Canines are well developed in

a. Human beings

b. Cattle

c. ogs

d. !lephants

". #hich of the following is a dual gland$

a. Pancreas

b. %iver

c. &astric gland

d. 'alivar( gland

). !n*(mes are

a. Carboh(drates

b. Acids

c. +io,catal(st

d. +ases

-. atch the following

Column A Column +

a. /ncisor i. &rinding and crushing food

b. Canine ii. +iting the food

c. olar iii. Tearing food

d. Tongue iv. 0elease en*(me

e. 'alivar( gland v. i ing of food




. #rite T for true and F for false statement.

a. The large intestine absorbs water and minerals.

b. Pancreas is the largest gland in our bod(.

c. Amoeba ingests food with the help of pseudopodia.

d. Villi help in digestion of food.

e. Animals can digest cellulose.

3. #here is bile produced$ #hich component of the food does it help to digest$

4. #hat are villi$ #rite its function$

5. #hat are ruminants$ How do the( digest cellulose$

16. Provide single term for the following7

a. The organ which stores bile.

b. Finger,li8e outgrowth in the small intestine.

c. The part of amoeba which help in capturing food.

d. The longest part of alimentar( canal.

e. The part which feels the taste of different food items.




Answer ke

1. c

2. c

". a

). c

-. 9a: ; 9ii:< 9b: ; 9iii:< 9c: ; 9i:< 9d: ; 9v:< 9e: ; 9iv:.

. 9a: T 9b: F9c: T 9d: F 9e: F.

3. +ile is produced in liver. +ile contains bile =uices which emulsif( the fats into smaller

fat globules to ma8e it easier for digestion of fat.

4. Villi are small finger,li8e pro=ection in the small intestine. /t increases the surface area

for absorption of digested food. 0ich suppl( of blood help in transport of food to all

parts of the bod(.

5. The animals having four chambered stomach are called chewing animals or ruminants

animals. For e ample cow< which alwa(s seems to chew something throughout the

da(.

16. 'ingle words

a. &all bladder.

b. Villi.

c. Pseudopodia

d. 'mall intestine

e. Tongue.




CBSE Worksheet-07


1. A substance which kills bacteria in stomach

a. Water

b. Hydrochloric acid

c. Sulphuric acid

d. Citric acid

2. Animals that chew cud are called

a. Herbivores

b. Omnivores

c. Ruminant

d. rass eatin!

". #otal number o$ canines teeth in adult human bein!s are

a. 2

b. %

c. &

d. '

%. astric (uice contain en)yme

a. *ipase

b. Amylase

c. Cellulase

d. +epsin

,. -atch the $ollowin!

Column A Column

a. -astication i. all bladder

b. Ruminant ii. +seudopodia

c. +tyalin iii. #eeth

d. /n!estion in amoeba iv. Cellulose di!estin!

e. ile storin! or!an v. Saliva




&. 0ill in the blanks

a. Saliva is secreted in mouth by .

b. is produced by liver.

c. 0ood is pushed down into the stomach by .

d. Amoeba di!est its $ood in the .

e. i!estion o$ starch starts in .

3. Which !land release !astric (uice4 What is its $unction4

'. What are ruminants4 5ame the $our compartments o$ their stomach4

6. What Oral Rehydration Solution4

17. -ention the important $unctions o$ pancreas.




Answer ke

1. b

2. c

". b

%. d

,. 8a9 : 8iii9; 8b9 : 8iv9; 8c9 : 8v9; 8d9 : 8ii9; 8e9 : 8i9.

&. 8a9 Salivary !lands 8b9 ile (uice8c9 peristaltic movement 8d9 $ood vacuole 8e9 mouth.

3. astric (uice is released by !astric !lands present in wall o$ stomach. /t contains HCl;

pepsin; and mucus that help in di!estion o$ $ood.

'. rass eatin! animals are called ruminants. #hey can di!est cellulose. #he stomach o$

these animals is $our chambered.

6. ORS is boiled but cooled water with a pinch o$ salt and some su!ar dissolved in it.

<=cess loss o$ water $rom the body can be maintained by !ivin! ORS solution

$re>uently.

17. +ancreas is a dual !land that releases hormone as well as en)yme. #he main hormone

released by pancreas is insulin that control su!ar level in blood. #he en)yme released

by pancreas includes amylase; trypsin; lipase.




. Write / for true and F for false statements.

a. /ongue help in mi0ing of food "ith saliva.

b. Large intestine absorbs digested food.

c. -hythmic contraction and rela0ation of food pipe is called peristalsis.

d. Small finger li e pro ection in small intestine help in digestion of food.

e. /here are 4 premolars and molars in adult mouth.

5. Why do "e get instant energy from glucose?

4. Write one similarity and one difference in nutrition in amoeba and human beings.

6. 7ame the main organs of human digestive system.

18. Which part of digestive canal is involved in

a. (bsorption of food

b. !he"ing of food

c. 9illing of #acteria

d. !omplete digestion of food

e. Formation of faeces




Answer ke

1. b

2. b

3. a

$. d

). :a; < :ii;= :b; < :iii;= :c; < :iv;= :d; < :v;= :e; < :i;.

. :a; / :b; F:c; / :d; F :e; /.

5. We get instant energy from glucose as glucose need not to be digested. 't is absorbed

by small intestine and send to blood. /hrough blood it riches to each cells and provide

energy instantly.

4. /he mode of nutrition is holo&oic= both in amoeba and human beings. #ut in amoeba

digestion is intra cellular but in human beings digestion is e0tra cellular.

6. /he main organs of digestive system are

a. Mouth

b. >esophagus

c. Stomach

d. Small intestine

e. Large intestine

f. -ectum

g. (nus.

18. >rgans involved are

a. Small intestine

b. Mouth

c. Stomach

d. Small intestine

e. -ectum.



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CBSE Worksheet-35

Class – VII Science (Transportation in Animals and Plants

1. The vessels that transport water and minerals are called

a. Xylem

b. Phloem

c. Stomata

d. Vacuoles

2. The excess of water absorbed plants by their roots gets evaporated through the

process of

a. bsorption

b. !xcretion

c. Transpiration

d. !limination

". #hich one of the following transport oxygen to different parts of the body$

a. %&'

b. #&'

c. Platelets

d. ll of them.

(. The urine from )idneys passes to urinary bladder through

a. *reter

b. *rinary tubules

c. *rethra

d. +allopian tube

,. -atch the following

'olumn 'olumn &

a. Transport oxygenated blood i. Pumping of blood

b. Transport deoxygenated blood ii. itrogenous waste from blood

c. /eart iii. #ater and mineral in plants

d. 0idney iv. rteries

e. Xylem v. Veins




. +ill in the blan)s.

a. The li uid part of blood is called 333333333333333333.

b. 0idney is made of tiny structures called 333333333333.

c. 333333333333333333 carry impure blood from organs to heart.

d. -ain excretory product of human being is 333333333333333.

e. 4argest artery is called 33333333333333.

5. /ow many chambered is the human heart$ ame them.

6. #hat is transpiration$ #rite its function$

7. #rite functions of blood$

18. %earrange the 9umbled words to get word related to human circulatory system.

a. ! /T%

b. V! :S

c. 4PS -

d. -;/! &: <4;

e. T! %%=




Ans!er ke"

1. a

2. c

". a

(. a

,. >a? @ >iv?A >b? @ >v?A >c? @ >i?A >d? @ >ii?A >e? @ >iii?.

. >a? Plasma >b? nephron >c? veins >d? urea>e? aorta.

5. /uman heart is divided into four chambers. The upper two chambers are called

auricles and lower two chambers are called ventricle.

6. 4oss of water in form of water vapour from the aerial parts of plant is called

transpiration. :t helps in upward movements of water and minerals from root to

leaves.

7. +unctions of bloodB

a. Transport of ;xygen and carbon dioxide.

b. Protection against infection.

c. Transport of nitrogenous wastes.

d. Transport of digested food.

18. >a? /! %T

>b? V!: S

>c? P4 S-

>d? / !-;<4;&:

>e? %T!%=.




CBSE Worksheet-36


1. Which chamber of heart receives oxygenated blood from heart?

a. Left atrium

b. Left ventricle

c. Right atrium

d. Right ventricle

2. In plants xylem and phloem comprise the

a. Food storing tissue

b. ascular tissue

c. !rotective tissue

d. Reproductive tissue

". #xcretory organ coc$roach is

a. %idney

b. Lung

c. &tomach

d. 'alpigian tubules

(. #rythrocytes is the another name of

a. W)*

b. R)*

c. !latelets

d. !lasma

+. 'atch the follo,ing

*olumn - *olumn )

a. hrombocytes i. ena cave

b. Leucocytes ii. R)*/s

c. #rythrocytes iii. W)*/s

d. Largest artery iv. -orta

e. Largest vein v. !latelets




0. Write for true and F for false statements.

a. hrobbing of heart is called !ulse.

b. uman heart consists of t,o chambers.

c. Removal of ,aste from the body is called excretion.

d. ialysis the process of removing nitrogenous ,aste from blood using

machine.

e. ransport of ,ater and minerals ta$es place via phloem.

3. What is double circulation?

4. What is the function of $idney? 5ame its functional unit.

6. What is blood? Write its composition?

17. !rovide the single ,ord for the follo,ing.

a. he system that help to supply food8 ,ater8 oxygen etc. to various parts of

the body.

b. he evaporation of ,ater in form of ,ater vapour from the aerial parts of

the body.

c. he vessels ,hich carry blood to,ards the heart.

d. he net,or$ of very small vessels formed by t,o different $inds of blood

vessels.

e. he vessels ,hich carry blood a,ay from heart.




Ans!er ke"

1. a

2. b

". d

(. b

+. 9a: ; 9v:8 9b: ; 9iii:8 9c: ; 9ii:8 9d: ; 9iv:8 9e: ; 9i:.

0. 9a: 9b: F9c: 9d: 9e: F.

3. he process in ,hich same blood flo,s t,ice through the heart once in oxygenated

form and other in deoxygenated form is called double circulation.

4. Function of $idney<

a. Removal of nitrogenous ,astes from the blood.

b. =smoregulation8 maintaining correct amount of ,ater in the body. Functional

unit of $idney is nephron.

6. )lood is fluid connective tissue. It helps in transportation of oxygen8 carbon dioxide8

hormones and other substance from one part of the body to others. It consists of

plasma8 R)*8 W)* and platelets.

17. 9a: *irculatory system.

9b: ranspiration

9c: eins

9d: *apillaries

9e: -rteries.




CBSE Worksheet-37


1. Functional unit of kidney is

a. Neuron

b. Nephron

c. Bowman’s capsule

d. Glomerulus

2. Blood cells that protect us from infection are called

a. Red blood cells

b. Erythrocytes

c. hite blood cells

d. !hrombocytes

". Function of heart is

a. #umpin$ of blood

b. #urification of blood

c. Remo%al of nitro$enous wastes

d. &ll of these.

'. (tethoscope measures the

a. Blood pressure

b. )eart beat

c. #ulse

d. Blood count

*. +atch the followin$

,olumn & ,olumn B

a. -idney i. #urification of blood

b. ylem ii. Remo%al of nitro$enous wastes

c. #hloem iii. !ransport of water and minerals

d. (tomata i%. !ransport of food in plants.

e. /un$s %. !ranspiration




0. Fill in the blanks.

a. (weat contain water and .

b. )aemo$lobin is present in .

c. !hrombocytes is the another name of .

d. Birds and insects e crete .

e. transport water and minerals.

3. hat are tissues4 Name any two comple tissues present in plants.

5. hy it is necessary to e crete4 Name the main e cretory product of human bein$.

6. hat is the function of red blood cells4 hat makes blood red4

17. Name the followin$

a. &rtery that carries deo y$enated blood.

b. & %ein that carries o y$enated blood.

c. ,hamber of heart that recei%es o y$enated blood.

d. #lant tissue that help in transportation.

e. Blood cells that help in blood clottin$.




Ans!er ke"

1. b

2. c

". a

'. b

*. 8a9 : 8ii9; 8b9 : 8iii9; 8c9 : 8i%9; 8d9 : 8%9; 8e9 : 8i9.

0. 8a9 (alts 8b9 red blood cells8c9 platelets 8d9 uric acid 8e9 ylem.

3. Group of cells ha%in$ common ori$in and performin$ similar function are called

tissues. !he two comple tissues present in plants are ylem and phloem.

5. <urin$ metabolic processes harmful nitro$enous wastes are produced that are to ic to

li%in$ or$anisms. !hese wastes are remo%ed by the process of e cretion.

6. Red blood cells are responsible for transport of o y$en. !he )aemo$lobin present in

red blood cells carries o y$en. !he red colour of blood is due to presence of

)aemo$lobin in RB,.

17. 8a9 pulmonary %ein

8b9 #ulmonary artery

8c9 /eft atrium

8d9 =ascular tissues

8e9 #latelets.




CBSE Worksheet-38


1. In plants, food is transported through

a. Xylem

b. Phloem

c. Stomata

d. Guard cells

2. Human heart consists of

a. Striated muscle

b. Smooth muscle

c. Voluntary muscle

d. ardiac muscle

!. "he pulse rate of a resting person is usually

a. !# to $# beats per minute

b. %# to &# beats per minute

c. '2 to (# beats per minute

d. (1 to )# beats per minute

$. *hich blood group is called as uni+ersal donor

a. -

b. -

c.

d. /

%. 0atch the follo ing

olumn - olumn

a. -moeba i. rea

b. Hydra ii. ric acid

c. Insects iii. Simple diffusion

d. irds i+. "entacles

e. Human +. 3ephridium




&. *rite " for true and 4 for false statements.

a. Human 5idney consists of numerous neurons.

b. / 2 is remo+ed through lungs during breathing.

c. *e s eat to maintain body temperature.

d. Phloem transport ater and minerals.

e. "ranspiration occurs through the stomata.

'. *hat is diffusion 3ame a organism that e6cretes by diffusion.

(. 7istinguish bet een arteries and +ein

). 3ame the organs in+ol+ed in urinary system in human beings.

1#. 3ame the parts of circulatory system mar5ed from 1 to & in figure belo .



Ans!er ke"

1. b2. d

!.

c$. a

%. 8a9 : 8iii9, 8b9 : 8i+9, 8c9 : 8+9, 8d9 : 8ii9, 8e9 : 8i9.

&. 8a9 4 8b9 " 8c9 " 8d9 4 8e9 ".

'. 7iffusion is the mo+ement of particles from a high concentration to a lo

concentration until the particles are spread out e+enly. In amoeba e6cretion ta5es

place by diffusion.

(. -rteries transport o6ygenated blood from hearts to all other parts of the body. Veins

transport deo6ygenated blood from different part of the body to hearts.

). "he urinary system consists of the follo ing;

a. - pair of 5idneys

b. - pair of reter

c. rinary bladder

d. rethra

1#. "he mar5ed parts are;

819. <ung

829. Pulmonary +ein

8!9. Pulmonary artery

8$9. Vein

8%9. -rtery

8&9 ody parts

class 7 cbse science worksheet

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