Refer to CBSE Class 7 Science Nutrition in Animals MCQs Set C provided below available for download in Pdf. The MCQ Questions for Class 7 Science with answers are aligned as per the latest syllabus and exam pattern suggested by CBSE, NCERT and KVS. Chapter 2 Nutrition in Animals Class 7 MCQ are an important part of exams for Class 7 Science and if practiced properly can help you to improve your understanding and get higher marks. Refer to more Chapter-wise MCQs for CBSE Class 7 Science and also download more latest study material for all subjects
MCQ for Class 7 Science Chapter 2 Nutrition in Animals
Class 7 Science students should refer to the following multiple-choice questions with answers for Chapter 2 Nutrition in Animals in Class 7.
Chapter 2 Nutrition in Animals MCQ Questions Class 7 Science with Answers
Question_____ Heterotrophs are organisms which depend on :-
(a) Living host
(b) Dead matter
(c) Sunlight
(d) Both A and B
Answer: D
Question. Animals which feeds upon dead organic matter are known as :
(a) Omnivores
(b) Carnivores
(c) Detritivores
(d) Herbivores
Answer: C
Question. Chlorophyll absorbs –
(a) red light only
(b) blue light only
(c) red and blue light
(d) green light only
Answer: C
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
Answer: D
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
Answer: D
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
Answer: A
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
Answer: D
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
Answer: D
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.
Answer: C
Question. Which of the following statements support(s) the fact that the upper surface of a leaf is usually greener than the lower surface ?
(a) More chlorophyll is present on the upper surface to absorb more light.
(b) There are more stomata present on the upper surface than the lower surface.
(c) More sugar is formed on the lower surface.
(d) The green leaves look greener under the hot Sun.
Answer: B
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.
Answer: D
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.
Answer: D
Question. A group of students of class 7th 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.
Answer: D
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
Answer: A
Question. Which of the following is true about parasitic plants ?
(i) They absorb food from their host.
(ii) They compete with the host for sunlight.
(iii) They kill the host plant eventually.
(a) (i) and (ii) only
(b) (i) a nd (iii) only
(c) (ii) and (iii) only
(d) (i), (ii) and (iii)
Answer: B
Question. Chlorophyll and melanin are both :
(a) Proteins
(b) Carbohydrates
(c) Nucleic acids
(d) Pigments
Answer: D
Question. Plants are –
(a) autotrophic
(b) heterotrophic
(c) saprophytic
(d) holozoic
Answer: A
Question_____ Element which is a component of chlorophyll ?
(a) Fe
(b) Zn
(c) Cl
(d) Mg
Answer: D
Question. Organisms who work together for mutual benefit for food and habitat :
(a) Symbiotic
(b) Parasitic
(c) saprophyte
(d) Autotrophic
Answer: A
Question. The raw materials for photosynthesis are –
(a) CO2 & O2
(b) sunlight and CO2
(c) water and chlorophyll
(d) CO2 and water
Answer: D
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
Answer: C
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
Answer: D
Question. In amoeba the digestion of food is –
(a) extracellular
(b) intracellular
(c) intercellular
(d) none of the above
Answer: B
Question. What is not necessary for the process of photosynthesis :
(a) carbon dioxide
(b) Nitrogen
(c) Water
(d) Sunlight
Answer: B
Question. The main organ for digestion and absorption of food is –
(a) large intestine
(b) small intestine
(c) stomach
(d) liver
Answer: B
Question_____ Which of the followig is a part of small intestine ?
(a) Caecum
(b) Colon
(c) Rectum
(d) Duodenum
Answer: D
Question_____ Oesophagus opens into
(a) Caecum
(b) Stomach
(c) Duodenum
(d) Ileum
Answer: B
Question. In human being number of stomach is –
(a) 1
(b) 2
(c) 3
(d) 4
Answer: A
Question. In which light, plants show maximum rate of photosynthesis ?
(a) Green
(b) Red
(c) Orange
(d) Violet
Answer: B
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
Answer: B
Question. Chlorophyll is present in –
(a) grana
(b) stroma
(c) leucoplast
(d) chromoplast
Answer: A
Question. Which one of the following enzyme acts efficiently at pH 2.0
(a) Pepsin
(b) Trypsin
(c) rennin
(d) Both A & C
Answer: D
Question. Main function of bile juice is to –
(a) Digest protein
(b) Digest vitamins
(c) help in fat digestion
(d) digest carbohydrates
Answer: C
Fill In The Blanks
Question. Intestinal juice is called as_________
Answer: Succus entericus
Question. After complete digestion proteins break down into _________
Answer: Amino acids
Question. Lowest rate of photosynthesis takes place in_____light.
Answer: Green
Question. Saliva is secreted in mouth by _________
Answer: Salivary glands
True / False
Question. Mushroom is a saprophytic organisms.
Answer: True
Question. Absorption and assimilation are similar processes.
Answer: False
Question. Tongue gives the sense of smell.
Answer: False
Question. Pointed teeth in buccal cavity are called canines.
Answer: True
Question. Tongue help in mixing of food with saliva.
Answer: True
Question. Rhythmic contraction and relaxation of food pipe is called peristalsis.
Answer: True
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
Answer: (i)-(e),(ii)-(c),(iii)-(b),(iv)-(a), (v)-(d)
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
Answer: (i)-(c),(ii)-(d),(iii)-(e),(iv)-(b), (v)-(a)
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MCQs for Chapter 2 Nutrition in Animals Science Class 7
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