A. Commensals
B. Herbivores
C. Fauna and flora
D. Planktons
Related Mcqs:
- In an aqueous environment, the microscopic animals are collectively called:
A. Herbivores
B. Carnivores
C. Planktons
D. Fauna and flora - In a fish aquarium green aquatic plants are grown primarily for:
A. Oxygen
B. Carbon dioxide
C. Fish feed
D. Decoration - 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 - Plants and animals living in a particular area consitute:
A. Flora and fauna
B. Community
C. Ecosystem
D. Ecology - All the non-cultivated plants and non-comesticated animals are referred to as:
A. Useless organism
B. Harmful life
C. Wild life
D. Enemies of man - Which element is vital to plants and animals for the synthesis of proteins and nucleic acies?
A. Oxygen
B. Nitrogen
C. Carbon
D. None of these - Which of the following communities is more vulnerable to invasion by outside animals and plants?
A. Mangroves
B. Tropical evergreen forests
C. Temperate forests
D. Oceanic island communities - The living organisms of all ecosystems collectively constitute:
A. Producers
B. Decomposers
C. Consumers and decomposers
D. Biosphere - Aquatic photostratifraction in increasing depth order:
A. Euphotic, despotic and aphotic
B. Aphotic, euphotic and despotic
C. Euphotic, aphotic and despotic
D. Despotic, euphotic and aphotic - The maximum biomagnification would be in which of the following in case of aquatic ecosystem?
A. Fishes
B. Birds
C. Zooplanktons
D. Phytoplanktons