A. Oxygen
B. Carbon dioxide
C. Fish feed
D. Decoration
Related Mcqs:
- The non-green plants are as important as the green plants because they:
A. Cause human disease
B. Cause diseases of other plants
C. Are useful in several industries
D. Bring about decomposition of dead animals and plant remains - In an aquatic environment, microscopic animals and plants are collectively known:
A. Commensals
B. Herbivores
C. Fauna and flora
D. Planktons - Hydrophytes (Aquatic Plants) means:
A. A reduction of the protective, conducting and supporting tissues
B. Absences of palisade tissue
C. Both (a) & (b)
D. None of these - When a big fish eats a small fish, which easts water-fleas supported by phytoplankton, the water leas are:
A. Primary consumers
B. Producers
C. Secondary consumers
D. Top consumers in this food chain - When cane plants grown in the forest, they scamble over other vegetation and this corresponds to:
A. Commensalism
B. Competition
C. Exploitation
D. None of these - The device or structure where plants are grown in a controlled environment:
A. Culture chamber
B. Inoculation chamber
C. Phytotron
D. All of these - In a forest ecosystem, green plants are:
A. The primary producers
B. Primary producers only sometimes
C. The decomposers
D. The consumers - Which group of three living organisms, given below is a link in food chain: Green plants …. Hawk:
A. Grasshopper, frog, snake
B. Grasshopper, rat, snake
C. Millipedes, centipedes, sparrow
D. Earthworm, hen, rat - If all the green plants were to disappear from the earth:
A. Only the herbivores will die
B. All the animal will die
C. Only the carnivores will die
D. It will not matter to anyone because chemosynthetic bacteria will produce food for all - When peacock eats snakes which eat insects thriving on green plants, peacock is:
A. A primary consumer
B. A primary decomposer
C. Final decomposer
D. The apex of the food pyramid
The correct answer to the question: "In a fish aquarium green aquatic plants are grown primarily for:" is "Oxygen ".
