Organisms and Environment
Organisms and Environment: Overview
This topic covers concepts such as Biome, Niche, Levels of Organization in Animals, Community in an Ecosystem and Ecological Hierarchy.
Important Questions on Organisms and Environment
Which one of the following correctly represents an organism and its ecological niche?
Abundance of a species in a population, within habitat is called
How does a population adapt to its environment?
A large regional unit having a particular major vegetation zone and related fauna is called biome.
Fill in the blank with the correct answer from the bracket.
_____ is the basic unit of ecological hierarchy. (Population, Organism, Ecosystem)
Write a short note on ecological hierarchy.
Phytoplanktons are found in _____ zone. (intertidal/limnetic)
Tropical rainforest is not characterized by
The abundance of a species population within its habitat is called
Consider the following graph with respect to biome and select the correct choice.
Match the column I (Indian forest types) with column II (dominant tree genera) and choose the correct option.
| Column-I | Column- II | ||
|---|---|---|---|
| (A) | Tropical rain forest | (1) | Hopea |
| (B) | Tropical deciduous forest | (2) | Shorea |
| (C) | Temperate broadleaf forest | (3) | Quercus |
| (D) | Temperate coniferous forest | (4) | Picea |
Niche of a species in an ecosystem refers to its
Niche of a species in an ecosystem refers to its:
Plants such as Prosopis, Acacia and Capparis represent examples of tropical
