30 public questions tagged with this topic.
Biological magnification causes toxins to accumulate and increase in concentration at higher trophic levels, affecting top predators. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.
Ref: NCERT Biology Textbook for Class XI and XII (Botany section), Chapter: Biology - Botany portion covering relevant concept.
A frog is a secondary consumer as it feeds on primary consumers like insects.
Ref: NCERT Class 12 Biology Chapter 12: Ecosystem Ecosystem Services and Functions
Tertiary consumers occupy the highest trophic level and receive the least energy due to energy loss at each transfer.
Ref: NCERT Class 12 Biology Chapter 12: Ecosystem Ecosystem Services and Functions
Carnivores do not belong to the second trophic level; they are secondary or tertiary consumers.
Ref: NCERT Class 12 Biology Chapter 12: Ecosystem Ecosystem Services and Functions
Consumers gain less energy than producers due to energy loss at each trophic level.
Ref: NCERT Class 12 Biology Chapter 12: Ecosystem Ecosystem Services and Functions
Energy transfer is inefficient because most energy is lost as heat due to metabolic activities, limiting the amount transferred to the next level.
Ref: NCERT Class 12 Biology Chapter 12: Ecosystem Ecosystem Services and Functions
A snake is a tertiary consumer in a food chain, as it feeds on secondary consumers like frogs.
Ref: NCERT Class 12 Biology Chapter 12: Ecosystem Nutrient Cycling - Carbon Phosphorus and Ecological Succession
Secondary consumers occupy the third trophic level in a food chain, feeding on primary consumers.
Ref: NCERT Class 12 Biology Chapter 12: Ecosystem Nutrient Cycling - Carbon Phosphorus and Ecological Succession
Toxic substances increase in concentration as they move up the food chain, affecting top predators the most.
Ref: NCERT Class 12 Biology Chapter 12: Ecosystem Nutrient Cycling - Carbon Phosphorus and Ecological Succession
Food chains do not always begin with decomposers; they usually start with producers like plants.
Ref: NCERT Class 12 Biology Chapter 12: Ecosystem Energy Flow - Food Chains Food Webs Trophic Levels
Food chains do not exist independently; they interconnect with other food chains to form a food web.
Ref: NCERT Class 12 Biology Chapter 12: Ecosystem Energy Flow - Food Chains Food Webs Trophic Levels
Grazing food chains begin with living plants, while detritus food chains start with dead organic matter that decomposers break down.
Ref: NCERT Class 12 Biology Chapter 12: Ecosystem Energy Flow - Food Chains Food Webs Trophic Levels
