In this section provides Biology Nutrition in Plants MCQ with Solutions for CBSE Class 10 to prepare the student for any eventuality and lays a strong foundation for higher level competitive exams like NTSE, NSO & KVPY. We are confidently hopeful that students would find this Questions a worthy reinforcement for their preparations.
Nutrition in Plants MCQ with solutions
1. The chemical substance that work as a raw material for body building and maintaining its functions is termed as:
(A) Water
(B) Proteins
(C) Trace elements
(D) Nutrients
Solution
Sol. Nutrients are the substances utilized by organisms to generate energy and maintaining it’s function.
2. Which one of the following is a nutrient for plants ?
(A) O2
(B) SO2
(C) CO2
(D) NO3
Solution
Sol. Plants utilize CO2 and H2O to form carbohydrate, in presence of sunlight and chlorophyll so CO2 is nutrient for plants.
3. Photosynthetic nutrition in plants is also known as :
(A) Holophytic nutrition
(B) Holotrophic nutrition
(C) Heterotrophic nutrition
(D) Heteroholophytic nutrition
Solution
Sol. In photosynthetic nutrition food (carbohydrate) is synthesized by plant itself and used up for different metabolic activities.
4. Cuscuta is an example of :
(A) Heteroparasite
(B) Holoparasite
(C) Homoparasite
(D) Semiparasite
Solution
Sol. Cuscuta is total stem parasite. It is dependent on host for food as well as for water.
5. The example of a partial root parasite is :
(A) Santalum
(B) Cuscuta
(C) Arceuthobium
(D) Viscum
Solution
Sol. Santalum is partial root parasite because it absorbs only water from roots of other plants.
6. Saprophytes belonging to angiosperms are known as :
(A) Humus plants
(B) Organic plants
(C) Facultative saprophytes
(D) Obligate saprophytes
Solution
Sol. Angiospermic saprophytes are dependent on humus of soil for nutrition.
7. A heterotroph is an organism that derives it’s energy from :
(A) Light
(B) Inorganic molecules
(C) Organic molecules
(D) Heat
Solution
Sol. Heterotrophic organisms utilize organic molecules (carbohydrate, fats, proteins) as their food.
8. Chemosynthesis means :
(A) Synthesis of chemical compound
(B) Synthesis of food with the help of energy obtained in a chemical reaction
(C) Distribution of food substances to various parts of the body
(D) Decomposition of food.
Solution
Sol. In Chemosynthetic organism source of energy is chemical reaction while in photosynthesis sunlight is used as source of energy.
9. The carnivorous plants live in water logged or boggy habitats which are :
(A) Deficient in nitrates
(B) Deficient in sulphites
(C) Deficient in oxygen
(D) Deficient in many salts.
Solution
Sol. Insectivorous plants can synthesize their food (they are green) and hence they are autotrophs but cannot take their nitrogen form soil as they grow in water logged swampy soils deficient in nitrogenous compounds.
10. Which one of the following insectivorous plants is also known as Sundew plant ?
(A) Nepenthes
(B) Drosera
(C) Utricularia
(D) Dionaea
Solution
Sol. In Drosera all leaves possess large number of club shaped hairs called tentacles. Each tentacle is a mucilage secreting gland. It secretes a sticky purple juice which shines like a dew drop in bright sunlight so it is commonly called sundew plant.
11. Rafflesia is an example of :
(A) Total root parasite
(B) Total stem parasite
(C) Partial root parasite
(D) Partial stem parasite
Solution
Sol. Rafflesia is an example of total root parasite
12. All producers show :
(A) heterotrophic nutrition
(B) autotrophic nutrition
(C) both heterotrophic and autotrophic nutrition
(D) neither autotrophic nor heterotrophic nutrition
Solution
Sol. All producers (green plants and blue–green algae) perform autotrophic nutrition by the process of photosynthesis and make their own food. But some producers like Nepenthes perform both autotrophic and heterophic nutrition.
13. Sulphur bacteria are :
(A) Photoautotroph
(B) Chemoautotroph
(C) Saprozoic
(D) Holozoic
Solution
Sol. Sulphur bacteria are chemoautotrophic or chemosynthetic i.e. derive energy from chemicals.
14. Which of the following are micronutirents :
(A) Mg and Fe
(B) Fe and Zn
(C) Zn and Ca
(D) Ca and P
Solution
Sol. Fe (iron) and Zn (Zinc) are micronutrients as these are required in minute quantities for plants.
15. Nutrients may be classified as
(A) Energy yielding = Carbohydrates and Fats
(B) Body building = proteins
(C) Growth Regulating = Vitamins and Minerals
(D) All of above
Solution
Sol. Nutrients are classified as
Energy yielding Carbohydrates and fats
Body building Proteins
Growth Regulating Vitamins and Minerals
16. The core metal of chlorophyll is:
(A) Fe
(B) Mg
(C) Ni
(D) Cu
Solution
Sol. Chlorophyll has tetra pyrrole with Mg as chelate.
17. An autotroph is an organism that :
(A) Requires no input of materials from its environment
(B) Sustains life without eating other organisms
(C) Sustains life without aerobic cellular respiration
(D) Uses ammonia instead of water as a solvent
Solution
Sol. An autotroph is an organism that make their own food and do not depend on other organisms.
18. The traps of carnivorous plants contain :
(A) Polysaccharides
(B) Digestive enzymes
(C) Phospholipids
(D) Herbicides
Solution
Sol. Insectivorous or carnivorous plants contain digestive enzyme which digests the insects.
19. Which one of the following is not parasite :
(A) Ascaris
(B) Taenia solium
(C) Cuscuta
(D) Mangifera indica
Solution
Sol. Mangifera indica (Mango) is not a parasite but Ascaria, Taenia solium and Cuscuta are all parasites.
20. Lichen is symbiotic association between :
(A) Algae & higher plants
(B) Algae & fungi
(C) Fungi & higher plants
(D) None of the above
Solution
Sol. Lichen is a symbiotic association between Algae and Fungi.
Some Frequently Asked Questions
Plants utilize CO2 and H2O to form carbohydrate, in presence of sunlight and chlorophyll so CO2 is nutrient for plants.
In Drosera all leaves possess large number of club shaped hairs called tentacles. Each tentacle is a mucilage secreting gland. It secretes a sticky purple juice which shines like a dew drop in bright sunlight so it is commonly called sundew plant.
Rafflesia is an example of total root parasite.
Photosynthetic nutrition in plants is also known as Holophytic nutrition. In photosynthetic nutrition food (carbohydrate) is synthesized by plant itself and used up for different metabolic activities.