8/12/2019 class 7 cbse Science Worksheet http://slidepdf.com/reader/full/class-7-cbse-science-worksheet 1/36 Material downloaded from http://myCBSEguide.com and http://onlineteachers.co.in Page 1 of 183 Portal for CBSE Notes, Test Papers, Sample Papers, Tips and Tricks 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
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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#
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. /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. $bser'e the diagrams of organisms gi'en below. )ame them and write their category.
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CBSE Worksheet-02
Class – VII Science (Nutrition in Plants)
1. In the process of photosynthesis, the gas given out by green leaves is
a. Oxygen
b. Carbon dioxide
c. Nitrogen
d. Ozone
2. To test the presence of starch by iodine, the green leaf is first boiled in alcohol to
a. issolve chlorophyll
b. !e"ove starch
c. #a$e the leaf soft
d. #a$e the leaf transparent
%. &hich of the follo'ing is an insectivorous plant(
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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.
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CBSE Worksheet-03
Class – VII Science (Nutrition in Plants)
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
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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.
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CBSE Worksheet-04
Class – VII Science (Nutrition in Plants)
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#
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/. 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.
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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. $ellulose
d. %ats
4. %inger&li'e pro"ection called villi are found in the inner wall of
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6. %ill in the blan's.
a. Saliva is secreted in the mouth by &&&&&&&&&&&&&&&&.
b. Largest gland in human body is &&&&&&&&&&&&&&&&&.
c. +ongue help in &&&&&&&&&&&&&&& and &&&&&&&&&&&.
d. ,nsulin is released by &&&&&&&&&&&&&&&&&.
e. H$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.
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. #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.
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CBSE Worksheet-07
Class – VII Science (Nutrition in Animals)
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
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&. 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
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. 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.
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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
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. +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.
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CBSE Worksheet-36
Class – VII Science (Transportation in Animals and Plants
1. Which chamber of heart receives oxygenated blood from heart?
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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 $inds of blood
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CBSE Worksheet-37
Class – VII Science (Transportation in Animals and Plants
1. Functional unit of kidney is
a. Neuron
b. Nephron
c. Bowman’s capsule
d. Glomerulus
2. Blood cells that protect us from infection are called
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0. Fill in the blanks.
a. (weat contain water and .
b. )aemo$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.
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CBSE Worksheet-38
Class – VII Science (Transportation in Animals and Plants
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&. *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 .