CBSE Questions for Class 7 Biology Nutrition In Plants Quiz 2 - MCQExams.com

Nitrogen fixation by Rhizobium can be improved with the supply of
  • Potassium
  • Phosphorus
  • Nitrogen
  • Calcium
Organisms that can prepare their own food are known as- 
  • Autotrophs
  • Heterotrophs
  • Phototrophs
  • Saprotrophs
Organisms that synthesize their own food are called as
  • Heterotrophs 
  • Sulphur bacteria
  • Autotrophs
  • Purple-sulphur bacteria
Organisms which cannot prepare their own food are called ________.
  • Autotrophs
  • Heterotrophs
  • Algae
  • All of the above
Which of the following events occurs in photosynthesis?
  • It converts light energy into chemical energy.
  • It creates useful energy.
  • It fixes CO$$_2$$ into carbohydrates.
  • It reverses the action of respiration.
The function of the root nodules is:
  • To store food
  • To provide extra strength
  • To perform photosynthesis
  • To give shelter to bacteria
Which of the following eats the fruits of trees?
"The process of absorption and conversion of ................. energy into .................. energy by green plants is called as photosynthesis".
  • Chemical, light
  • Mechanical, chemical
  • Light, chemical
  • Thermal, light
What are the characteristics of heterotrophic nutrition?
  • Heterotrophic organisms have chlorophyll.
  • Heterotrophic organisms are able to build up their own organic food from raw materials.
  • Heterotrophic organisms cannot make their own food.
  • All of the above
Which of the following is a parasitic plant?
  • Cactus
  • Cauliflower
  • Dodder
  • Cucumber
A carnivore eats
  • Sprouted seeds
  • Milk
  • Green leaves
  • Flesh of other animals
The function of bacteria present in the root nodules of leguminous plants is 
  • To store food.
  • To perform photosynthesis.
  • To fix the atmospheric nitrogen.
  • To simplify the complex minerals present in the soil.
Parasites are:
  • Organisms which prepare food on their own.
  • Organisms which break glucose into alcohol and carbon dioxide.
  • Organisms which draw nutrition from living tissues of plants and animals.
  • Plants which kill insects for their food.
Green plants can synthesize their own food. They are called ________.
  • Autotrophs
  • Heterotrophs
  • Parasites
  • All of the above
............ is taken in through the tiny pores present on the surface of the leaves
  • Carbon dioxide
  • Nitrogen
  • Oxygen
  • None of these
Pulses are rich in protein because of _____________
  • Insectivorous habit
  • High requirement of nitrogen fertilizers.
  • Rhizobium
  • Green manuring
A typical cell contain which of the following main components?
  • Cell membrane
  • Cytoplasm
  • Nucleus
  • All of the above
Humans and animals are dependent on plants.
  • Directly
  • Indirectly
  • Both A and B
  • None of the above
Choose the correct statement with respect to symbiosis.
  • Lichen is an example of symbiosis.
  • In symbiotic relationship, organisms live together.
  • In symbiotic relationship, organisms share shelter and nutrients.
  • All of the above
Natural system of classification employs
  • Complexity of cell structure
  • Complexity of body structure
  • Organisation
  • All the above
Heterotrophs may be
  • Holozoic.
  • Saprophytic.
  • Parasitic.
  • All of the above.
What are examples of saprotrophs?
  • Bacteria and Fungi
  • Cats and Rats
  • Buffaloes
  • Lions and Tiger
Autotrophs can be differentiated from the heterotrophs in terms of the:
  • Mode of obtaining food
  • Nature of the cell, i.e. prokaryotic or eukaryotic
  • Organization of the body or cell of that organism
  • All of the above
Fertilizers and manures contain plant nutrients such as:
  • Nitrogen
  • Potassium
  • Phosphorous
  • All of the above
In the process of photosynthesis by plants, which of the following is not required?
  • Water
  • Carbon dioxide
  • Sunlight
  • Alum
The autotrophs capture the energy present in the sunlight and convert it into ______.
  • Chemical energy
  • Biological energy
  • Physical energy
  • All of these
Rhizobium is associated with
  • Photosynthesis.
  • Respiration.
  • Nitrogen fixation.
  • Carbon fixation.
Which one of the following has autotrophic mode of nutrition?
  • Lion
  • Crocodile
  • Man
  • Pine
  • None of these
The basic components of a cell are:
  • Cell membrane
  • Cytoplasm
  • Nucleus
  • All of the above
Which of these groups of words means the same thing?
  • Autotrophs and consumers
  • Autotrophs and producers
  • Heterotrophs and producers
  • Autotrophs and carnivore
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