Which of the following is producer of plant kingdom
Melia
Ficus
Ziziphus
All the above
In a terrestial ecosystem such as forest, maximum energy is in which trophic level
$A$- Grasshopper is included in primary consumer.
$R$- Fishes and birds are included in top carnivore.
In a biotic community, primary consumers are
Assertion : Biotic community has higher position than population in ecological hierarchy.
Reason : Population of similar individuals remains isolated in the community.
The phytoplankton in the ponds act as