MCQ Class 7 Science Chapter 2 Nutrition in Animals

Check the below NCERT MCQ Class 7 Science Chapter 2 Nutrition in Animals with Answers available with PDF free download. MCQ Questions for Class 7 Science with Answers were prepared based on the latest syllabus and examination pattern issued by CBSE, NCERT and KVS. Our teachers have provided below Nutrition in Animals Class 7 Science MCQs Questions with answers which will help students to revise and get more marks in exams

Nutrition in Animals Class 7 Science MCQs Questions with Answers

Multiple Choice Questions :

Question. Insectivorous plant is – 
(A) Mustard
(B) Cuscuta
(C) Nepenthes
(D) Neem

Question. ._ Humans are unable to digest the cellulose of the food because : 
(A) Their stomach is not divided into compartments.
(B) The lumen of the small intestine is narrow.
(C) They are unable to chew cellulose.
(D) Certain bacteria that are present in ruminants are not present in humans.

Question. ._ Which of the following has ability to fix carbon into organic products.
(A) Autotrophs
(B) Heterotrophs
(C) Parasites
(D) All of these

Question. Identify the odd one out :
(A) Neem
(B) Amaranthus
(C) Rose
(D) Cuscuta

Question. Plants are –
(A) autotrophic
(B) heterotrophic
(C) saprophytic
(D) holozoic

Question._ Element which is a component of chlorophyll ?
(A) Fe
(B) Zn
(C) Cl
(D) Mg

Question. Organisms who work together for mutual benefit for food and habitat :
(A) Symbiotic
(B) Parasitic
(C) saprophyte
(D) Autotrophic

Question._ Which organisms feed on blood ? 
(A) Omnivores
(B) frugivorous
(C) Sanguivorous
(D) Insectivores

Question._ Heterotrophs are organisms which depend on :-
(A) Living host
(B) Dead matter
(C) Sunlight
(D) Both (A) and (B)

Question. Animals which feeds upon dead organic matter are known as :
(A) Omnivores
(B) Carnivores
(C) Detritivores
(D) Herbivores

Question. Chlorophyll absorbs –
(A) red light only
(B) blue light only
(C) red and blue light
(D) green light only

Question. Most of the photosynthesis (80%) which takes place on this earth is carried on by
(A) green plants on land
(B) algae present in fresh water
(C) algae found in ocean
(D) algae present in ocean and fresh water sources

Question. The role of chlorophyll in photosynthesis is to –
(A) absorb water and minerals
(B) absorption of CO₂
(C) absorption of light and photolysis of water
(D) absorption of light

Question. The function of scissors is synonymous with the function of
(A) Incisors
(B) Premolars
(C) Canines
(D) Molars

Question. Match Column-I with Column-II and select the correct option from the codes given below.
Column I                             Column – II
(a) Salivary gland           (i) Breaks down fats
(b) Intestinal gland         (ii) Breaks down proteins into peptides
(c) Pancreas                    (iii) Breaks down peptides into amino acids
(d) Liver                           (iv) Breaks down starch into sugar
(A) (a)-(iv),(b)-(iii),(c)-(ii),(d)-(i)
(B) (a)-(i),(b)-(ii),(c)-(iii),(d)-(iv)
(C) (a)-(ii), (b)-(iii), (c)-(i), (d)-(iv)
(D) (a)-(iv), (b)-(ii), (c)-(iii), (d)-(i)

Question. Read the given statements and select the correct option. 
Statement 1: Plants serve as the ultimate food source for all the organisms whether herbivores or carnivores.
Statement 2 : Plants use solar energy to prepare their own food.
(A) Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
(B) Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
(C) Statement 1 is true but statement 2 is false.
(D) Both statements 1 and 2 are false.

Question. Tanmay took a potted plant and covered one of its leaves entirely with black paper and marked it as X and left the plant in sunlight for 6 hours. After 6 hours, he plucked three leaves X, Y and Z. He immersed leaves X and Z immediately in water but smeared leaf Y with petroleum jelly prior to immersion. Bubbles were seen on the surfaces of leaves X, Y and not on leaf Z. Which of the following is most likely the reason for it ?
(A) Bubbles on leaf Z are of oxygen, produced in photosynthesis.
(B) Bubbles on leaf X are of carbon dioxide, produced in respiration.
(C) Stomata on leaf Y are blocked with petroleum layer, thus oxygen cannot come out from leaf.
(D) All of these

Question. Ridhima took two test tubes labelled as 1 and 2 as shown in the figure. In test tube 1. she put one table spoon of boiled rice and in test tube 2, she put one table spoon of boiled rice after chewing it for 3-5 minutes. Then she added 3-4 mL of water in both the test tubes.

Which of the following would be the expected observation b Ridhima?
(A) Colour changes to blue-black in test tube 1 as rice is rich in starch.
(B) Colour changes to blue-black in test tube 2 as saliva breaks down the starch into sugars.
(C) Colour changes to blue-black in both the test tubes.
(D) Colour does not change in either of the test tubes

Question. Which of the following statements is/are true (T) or false (F) regarding nutrition in organisms ?
(i) Photosynthesis also occurs in leaves having colour other than green.
(ii) The process of photosynthesis first produces a simple carbohydrate called glucose which then gets converted into a complex carbohydrate called starch.
(iii) Cuscuta is a yellow-coloured plant but it can synthesize its own food by photosynthesis.
(iv) In a symbiotic association. Rhizobium bacteria derive their nutrition from fungus.
      (i)   (ii)  (iii)   (iv)
(A)  F     T     T      T
(B)  T     T     T      F
(C)  F     F     F      T
(D)  T     T     F      F

Question. Refer to the given graph which shows the effect of pH on the activities of three enzymes. X. Y and Z.

The three enzyme samples. X. Y and Z are taken from which parts of the human alimentary canal ?
               X                Y                       Z
(A) Duodenum    Mouth          Stomach
(B) Mouth           Stomach      Duodenum
(C) Stomach       Duodenum   Mouth
(D) Stomach       Mouth          Duodenum

Question. The given graph shows the percentage of undigested carbohydrates. proteins and fats through successive parts of the human alimentary canal. Why does the percentage of undigested carbohydrates remain constant in part X ?
(A) All the starch has been digested and only other carbohydrates remain.
(B) Protease at part X prevents the salivary amylase from acting on starch.
(C) The acidic conditions of part A -prevent salivary amylase from acting on starch.
(D) All the carbohydrates have been digested before reaching part X.

Question. Which of the following statements support(s) the fact that the upper surface of a leaf is usually greener than the lower surface ?
(i) More chlorophyll is present on the upper surface to absorb more light.
(ii) There are more stomata present on the upper surface than the lower surface.
(iii) More sugar is formed on the lower surface.
(iv) The green leaves look greener under the hot Sun.

Question. Refer to the given diagram which shows various parts of human digestive system labelled as I, II,III, IV and V.

Identify the organs and select the incorrect statement regarding them.
(A) Organ V is involved in storage of bile not its production.
(B) Organ II secretes digestive juice which contains mucus, hydrochloric acid and digestive enzymes.
(C) Organ IV is the largest gland of the body.
(D) Organ I is involved in the absorption of water from food.

Question. Read the given statements and select the correct option. 
Statement 1 : Chemical digestion of food involves breaking down of food by chewing and churning.
Statement 2 : Mechanical digestion of food involves coversion of complex substances such
as carbohydrates into their simpler forms such as glucose by enzymatic action.
(A) Both statements 1 and 2 are true and statement 2 is the correct explanation of statement1.
(B) Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
(C) Statement 1 is true but statement 2 is false.
(D) Both statements 1 and 2 are false.

Question. Refer to the given flow chart and select the correct option regarding P, Q, R and S.

(A) Plant P derives nutrition from the host plant with the help of haustoria and possesses hygroscopic roots which absorb moisture directly from atmosphere.
(B) Plant Q possesses broad thin leaves with superficial stomata.
(C) Plant R possesses special leaf modifications to catch and digest insects.
(D) Plant S possesses stilt roots which help in aeration.

Question. Digestive juices were collected from three different regions of the alimentary canal. Drops
of these juices were added to wells made in an agar of starch as shown below.

After an hour, the wells were rinsed with distilled water and flooded with iodine solution. The results are shown below

Which of the following correctly identifies the regions of the alimentary canal from which the three digestive juices were obtained ?

Question. Read the given paragraph where few words have been italicised. 
Buccal cavity of humans contains two pairs of salivary glands which secrete digestive juices that help in digestion of proteins present in food. From here food enters stomach where digestion of mainly fats takes place. As this semi-digested food enters small intestine complete digestion of food occurs. Small intestine receives bile juice from pancreas which digests fats. Most absorption of water occurs in large intestine.
Select the correct option regarding this.
(A) Two should be replaced by four whereas proteins should not be replaced as it is correctly mentioned.
(B) Fats should be replaced by carbohydrates and pancreas should be replaced by liver.
(C) Digests should be replaced by emulsifies.
(D) Large should be replaced by small.

Question. How does photosynthesis help to maintain the percentage of oxygen and carbon dioxide in the atmosphere?
(A) By giving off carbon dioxide and absorbing oxygen.
(B) By giving off oxygen and absorbing carbon dioxide.
(C) By releasing oxygen and carbon dioxide.
(D) By absorbing oxygen and carbon dioxide.

Question. Out of total solar energy reaching earth, the amount utilized by the green plants is (T)
(A) 0.5%
(B) 1.0%
(C) 2.5 %
(D) 5.0%

Question. On Saturday, Sumit after having his lunch, forgot his lunch box in the school. When he
opened it on Monday, he found that it had some blackish-brown, cottony stuff in it. Which of
the following organisms can it most likely be ? (T)
(A) Mushroom
(B) Amoeba
(C) Rhizopus
(D) Either (A) or (C)

Question. Which part of the leaf controls the rate of loss of water in the air ?
(A) Midrib
(B) Stomata
(C) Vascular bundles
(D) Veins

Question. Cuscuta is
(A) Endoparasite of sheep
(B) Endoparasite of human beings
(C) A parasitic plant
(D) A parasite on fishes

Question. What is common among pancreatic amylase, rennin and pepsin –
(A) All these are protein
(B) All these are protein digesting enzymes
(C) All these are not produced in stomach
(D) All these act at lower pH

Question. The equation given below represents photosynthesis.

Which of the following is represented by X and Y in the given equation ?
(A) X – Carbon dioxide, Y- Oxygen
(B) X – Oxygen, Y- Carbon
(C) X – Carbon dioxide, Y- Hydrogen
(D) X – Oxygen,Y – Carbon dioxide

Question. A group of students of class 7^th were performing an experiment . Among them a student poured alcohol on a plant continuously for a long time. The plant could not prepare food on its own any more. Which of the following statements explains the reason behind it ?
(A) Alcohol absorbed all the food prepared by the plant.
(B) Alcohol does not let the plant absorb carbon dioxide from the air.
(C) Alcohol dissolved all the minerals present in the plant.
(D) Alcohol dissolved the chlorophyll present in the plant.

Question. From which of the four chambers of ruminant stomach, semi-digested food is moved back to mouth ?
(A) Rumen
(B) Abomasum
(C) Omasum
(D) All of these

Question. Which one of the following is a correct match ?
Type of teeth Function
(A) Incisors Biting and cutting
(B) Canines Crushing and grinding
(C) Molars & premolars Piercing and tearing
(D) Molars Smaller than premolars

Question. The phenomenon which converts light energy to chemical energy is –
(A) respiration
(B) photosynthesis
(C) transpiration
(D) none of these

Question. What role does the insect play in the insectivorous plant ?
(A) Fertilization process.
(B) Provides nutrients to the plant.
(C) Dispersal of seeds.
(D) Provides carbon dioxide to the plant.

Question. What is the role of the bacteria in leguminous plants ?
(A) Convert oxides of nitrogen into soil nitrates.
(B) Convert atmospheric nitrogen gas into soil nitrates.
(C) Convert soil nitrates into gaseous nitrogen.
(D) Convert plant proteins into ammonia.

Question. Which of the following is true about parasitic plants ?

(A) (i) and (ii) only
(B) (i) a nd (iii) only
(C) (ii) and (iii) only
(D) (i), (ii) and (iii)

Question. Chlorophyll and melanin are both :
(A) Proteins
(B) Carbohydrates
(C) Nucleic acids
(D) Pigments

Question. Which one of the following is the best equation representing photosynthesis ?

Question. The raw materials for photosynthesis are –
(A) CO₂ & O₂
(B) sunlight and CO₂
(C) water and chlorophyll
(D) CO₂ and water

Question. Which of the following statement is/are true about photosynthesis ?
P. Carbon dioxide is essential for photosynthesis to take place.
Q. The products of photosynthesis are simple sugars.
R. Photosynthesis occurs in the green leaves of plants.
S. Sunlight is not used as an energy source by plants to make food during photosynthesis.
(A) P and S only
(B) Q, R and S only
(C) P, Q and R only
(D) P, Q, R and S

Question. What is the aim of the given experiment ?

(A) To show that air is a basic need of plants.
(B) To show that food is a basic need of plants.
(C) To show that water is a basic need of plants.
(D) To show that sunlight is a basic need of plants

Question. Dental formula of adult human is

Question. In amoeba the digestion of food is –
(A) extracellular
(B) intracellular
(C) intercellular
(D) none of the above

Question. What is not necessary for the process of photosynthesis :
(A) carbon dioxide
(B) Nitrogen
(C) Water
(D) Sunlight

Question. In which light, plants show maximum rate of photosynthesis ?
(A) Green
(B) Red
(C) Orange
(D) Violet

Question. Chlorophyll is present in –
(A) Chloroplast
(B) Ribosome
(C) Leucoplast
(D) Chromoplast

Question. Which of the following is insectivorous ?
(A) Mushroom
(B) Cuscuta
(C) Mucor
(D) Nepenthes

Question. Which of the following statements is true about croton plants ?
(A) Croton plants do not contain chlorophyll.
(B) Croton plants are dark red in colour Hence they depend on other plants for food.
(C) Croton plants have chlorophyll but it is hidden by dark red colour pigments.
(D) Croton plants are parasites

Question. Teeth involved in cutting of food material are called –
(A) canines
(B) incisors
(C) molars
(D) premolars

Question. Plants are green in colour because –
(A) they absorb green light only
(B) they reflect green light
(C) they absorb green light but reflect all other lights
(D) none of the above are correct

Question. Chlorophyll is present in –
(A) grana
(B) stroma
(C) leucoplast
(D) chromoplast

Question. Which one of the following enzyme acts efficiently at pH 2.0
(A) Pepsin
(B) Trypsin
(C) rennin
(D) Both (A) & (C)

Question. ._ Which of the following statement is correct about Euglena.
(A) It is exclusively autotrophic.
(B) It is exclusively heterotrophic.
(C) It does not possess chlorophyll.
(D) It is autotropic in presence of light and heterotrophic in absence of light.

Question. In amoeba absorption of the digested nutrients occurs in –
(A) cytoplasm
(B) plasma membrane
(C) contractile vacuole
(D) pseudopodia

Question. Total number of canines in permanent dental set of human is –
(A) 4
(B) 6
(C) 2
(D) 12

Question. Number of permanent teeth in humans is :
(A) 28
(B) 30
(C) 32
(D) 34

Question. In human being gastric juice is secreted by –
(A) Liver
(B) Stomach
(C) Pancreas
(D) Small intestine

Question. The main organ for digestion and absorption of food is –
(A) large intestine
(B) small intestine
(C) stomach
(D) liver

Question._ Which of the followig is a part of small intestine ?
(A) Caecum
(B) Colon
(C) Rectum
(D) Duodenum

Question._ Oesophagus opens into
(A) Caecum
(B) Stomach
(C) Duodenum
(D) Ileum

Question. In human being number of stomach is –
(A) 1
(B) 2
(C) 3
(D) 4

Question. Where is bile stored in the human body ?
(A) Liver
(B) Gall bladder
(C) Spleen
(D) Blood

Question._ Maximum digestion occurs in
(A) Small intestine
(B) Oesophagus
(C) large intestine
(D) Stomach

Question. Enzyme which breaks up starch into sugar is –
(A) hydrolase
(B) amylase
(C) lipase
(D) nuclease

Question. The folds present in small intestine which increase the area of absorption are called as –
(A) Cristae
(B) Villi
(C) Cilia
(D) Flagella

Question. Main function of bile juice is to –
(A) Digest protein
(B) Digest vitamins
(C) help in fat digestion
(D) digest carbohydrates

Question. Digestion of starch starts from –
(A) stomach
(B) intestine
(C) oesophagus
(D) mouth

Question. Digestion is completed in
(A) Duodenum
(B) Ileum
(C) Stomach
(D) Large Intestine

Question._ Which is not a protein digestion enzyme ?
(A) Trypsin
(B) Amylase
(C) Pepsin
(D) Rennin

Question._ The process of covering large fat droplets into small ones is called
(A) Egestion
(B) Assimilation
(C) Emulsification
(D) None of these

Fill In The Blanks

Question. _____is the ultimate source of energy

Question. Largest gland of body is _________

Question. Gas released during photosynthesis is _____

Question. Food is pushed down into the stomach by _________

Question. Intestinal juice is called as_________

Question. After complete digestion proteins break down into _________

Question. Lowest rate of photosynthesis takes place in_____light.

Question. Saliva is secreted in mouth by _________

Question. Organisms those feed on fruits _____

True / False

Question. Plants obtain nitrogen from soil.

Question. Human being is an omnivorous organism.

Question. Plant intake carbon dioxide during respiration.

Question. Solar energy is captured by leaves.

Question. Mushroom is a saprophytic organisms.

Question. Absorption and assimilation are similar processes.

Question. Tongue gives the sense of smell.

Question. Pointed teeth in buccal cavity are called canines.

Question. Formula of half upper jaw of permanent teeth is 2123.

Question. Tongue help in mixing of food with saliva.

Question. Rhythmic contraction and relaxation of food pipe is called peristalsis.

Direction (Q. A & B) : Refer the given passage and answer the following questions.
Some organisms like fungi, etc. take in nutrients in solution form from dead and decaying matter. and are called saprotrophs. Fungi also grow on pickles, leather clothes and other articles that are left in hot and humid weather for long time. Certain fungi live in the roots of trees and share shelter and nutrients. This is called symbiotic relationship.

A. Which of the following statements is/are incorrect ?
(i) Fungi are called saprotrophs because they grow on pickles, leather and clothes.
(ii) Saprotrophs lack chlorophyll. so cannot make food by photosynthesis.
(iii) Like some fungi, lichens also show symbiotic relationship.
(iv) The bacterium called Rhicobium shows symbiotic relationship as it provides shelter.
water and minerals to legumes and, in return. the legumes provide food which they prepare by photosynthesis.
(A) (i) and (iv)
(B) (i) and (ii)
(C) (ii) and (iii)
(D) (iv) only

B. Which of the following organisms shows symbiotic relationship ?
(A) All fungi
(B) Lichens
(C) Rhizobum
(D) Both B & C

Match The Column

I. Column A                Column B
(i) Lichens                (a) Herbivores
(ii) Pitcher plant       (b) Parasitic
(iii) Amarbel             (c) Insectivores
(iv) Deer                    (d) Exchange of gasses
(v) Stomata              (e) Symbiotic association

II. Column A               Column B
(i) Herbivores           (a) Amarbel
(ii) Carnivores          (b) Yeast
(iii) Omnivores         (c) Cow
(iv) Saprophytes      (d) Lion
(v) Parasite              (e) Cat

III . Column A                         Column B
(i) Mastication                      (a) Large intestine
(ii) Absorption of water       (b) Liver 
(iii) Villi                                  (c) Mouth
(iv) Hydrochloric acid          (d) Stomach
(v) Bile                                   (e) Small intestine

IV . Column A                            Column B
(i) Carbohydrate            (a) Do not contain nutrient
(ii) Proteins                   (b) Glucose
(iii) Fats                         (c) Amino acid
(iv) vitamins                 (d) Fatty acid
(v) Roughage                (e) Provide immunity

Question. Match column – 1 with column – II and select the correct option from the codes given below.
Column – I                                   Column – II
(a) Chlorophyll                               (i) Rhizobium
(b) Symbiosis                                 (ii) Starch
(c) Insectivorous plant                  (iii) Lichen
(d) Nitrogen fixing organism        (iv) Mistletoe
(e) Partial parasite                        (v) Pitcher plant
(A) (a) – (i), (b) – (iv), (c) – (iii), (d) – (ii), (e) – (v)
(B) (a) – (iii), (b) – (v), (c) – (ii), (d) – (i), (e) – (iv)
(C) (a) – (ii), (b) – (iii), (c) – (v), (d) – (i), (e) – (iv)
(D) (a) – (v), (b) – (iv), (c) – (i), (d) – (ii), (e) – (iii)

Question. Match column – I with column – II and select the correct option from the codes given below.
Column – I                                                                           Column – II
(a) Energy value of food is measured in calories.            (i) True
(b) Starch and sugar are proteins.                                     (ii) False
(c) Cellulose can be digested in our digestive system.
(d) In absence of peristalsis, food from oesophagus cannot enter stomach.
(A) (a) – (i), (b) – (ii), (c) – (ii), (d) – (i)
(B) (a) – (ii), (b) – (i), (c) – (ii), (d) – (i)
(C) (a) – (i), (b) – (i), (c) – (ii), (d) – (ii)
(D) (a) – (ii), (b) – (i), (c) – (i), (d) – (ii)