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All questions of Food Chains and Food Webs for Class 6 Exam
What is the purpose of the Ecobrick Project in South Africa?- a)To increase plastic waste in oceans
- b)To recycle non-recyclable plastics into building materials
- c)To produce more microplastics
- d)To replace pesticides with plastics
Correct answer is option 'B'. Can you explain this answer?
What is the purpose of the Ecobrick Project in South Africa?
a)
To increase plastic waste in oceans
b)
To recycle non-recyclable plastics into building materials
c)
To produce more microplastics
d)
To replace pesticides with plastics
|
Subset Academy answered |
The Ecobrick Project in South Africa uses non-recyclable plastics to create ecobricks for building structures, reducing plastic waste in oceans, not increasing it.
Why are food webs considered more accurate than food chains?- a)They show only one food source for each animal
- b)They exclude producers
- c)They include multiple food chains and feeding relationships
- d)They focus only on carnivores
Correct answer is option 'C'. Can you explain this answer?
Why are food webs considered more accurate than food chains?
a)
They show only one food source for each animal
b)
They exclude producers
c)
They include multiple food chains and feeding relationships
d)
They focus only on carnivores
|
Edgy Education answered |
Food webs are more accurate because they show the complex feeding relationships and multiple food chains an organism is part of, unlike a single food chain.
What is the primary source of microplastics in oceans?- a)Breakdown of larger plastic items
- b)Natural minerals in seawater
- c)Decomposition of plant matter
- d)Volcanic activity
Correct answer is option 'A'. Can you explain this answer?
What is the primary source of microplastics in oceans?
a)
Breakdown of larger plastic items
b)
Natural minerals in seawater
c)
Decomposition of plant matter
d)
Volcanic activity
|
|
Edgy Education answered |
Microplastics form from the breakdown of larger plastic items by sunlight and wave action in oceans. They are not natural minerals, plant matter, or volcanic products.
How do herbivores obtain their energy?- a)By eating producers
- b)By consuming other herbivores
- c)By absorbing sunlight
- d)By breaking down microplastics
Correct answer is option 'A'. Can you explain this answer?
How do herbivores obtain their energy?
a)
By eating producers
b)
By consuming other herbivores
c)
By absorbing sunlight
d)
By breaking down microplastics
|
|
Edgy Education answered |
Herbivores obtain their energy by eating producers (plants), which store energy from the Sun. They do not absorb sunlight directly or consume other herbivores.
What happens to some of the energy a herbivore obtains from plants?- a)It is completely transferred to the carnivore
- b)It is lost as heat to the surroundings
- c)It is stored in the soil
- d)It is converted into toxic substances
Correct answer is option 'B'. Can you explain this answer?
What happens to some of the energy a herbivore obtains from plants?
a)
It is completely transferred to the carnivore
b)
It is lost as heat to the surroundings
c)
It is stored in the soil
d)
It is converted into toxic substances
|
Torcia Education answered |
Some energy a herbivore obtains from plants is lost as heat to the surroundings, used for survival, or stored in its body. Only the stored energy is passed to the next link.
What do the arrows in a food chain represent?- a)The direction of water flow
- b)The direction of food and energy transfer
- c)The movement of predators
- d)The breakdown of toxic substances
Correct answer is option 'B'. Can you explain this answer?
What do the arrows in a food chain represent?
a)
The direction of water flow
b)
The direction of food and energy transfer
c)
The movement of predators
d)
The breakdown of toxic substances
|
Freak Artworks answered |
Arrows in a food chain indicate the direction of food and energy transfer from producers to consumers, showing who eats whom. They do not represent water flow or predator movement.
Which of the following is a harmful substance that can accumulate in food chains?- a)Oxygen
- b)Nitrogen
- c)Sugar
- d)Mercury
Correct answer is option 'D'. Can you explain this answer?
Which of the following is a harmful substance that can accumulate in food chains?
a)
Oxygen
b)
Nitrogen
c)
Sugar
d)
Mercury
|
|
Subset Academy answered |
Mercury is a toxic metal that can accumulate in food chains, harming organisms, especially predators. Oxygen, sugar, and nitrogen are not harmful in this context.
How can pesticides impact food webs?- a)They only kill pests without affecting other organisms
- b)They can kill non-target organisms like butterflies
- c)They increase energy transfer in the food web
- d)They break down into harmless substances instantly
Correct answer is option 'B'. Can you explain this answer?
How can pesticides impact food webs?
a)
They only kill pests without affecting other organisms
b)
They can kill non-target organisms like butterflies
c)
They increase energy transfer in the food web
d)
They break down into harmless substances instantly
|
|
Subset Academy answered |
Pesticides can kill non-target organisms, such as butterflies, when they consume contaminated nectar, disrupting food webs. They do not increase energy transfer or break down instantly.
What is the primary role of producers in a food chain?- a)To consume herbivores
- b)To prey on other animals
- c)To break down organic matter
- d)To use sunlight to make food
Correct answer is option 'D'. Can you explain this answer?
What is the primary role of producers in a food chain?
a)
To consume herbivores
b)
To prey on other animals
c)
To break down organic matter
d)
To use sunlight to make food
|
|
Freak Artworks answered |
Producers, such as plants, use sunlight to make food through photosynthesis, forming the base of food chains. They do not consume other organisms or break down matter.
Why does the amount of energy decrease along a food chain?- a)Energy is lost as heat and used for survival
- b)Energy is gained at each link
- c)Energy is stored in the environment
- d)Energy is fully transferred to the next link
Correct answer is option 'A'. Can you explain this answer?
Why does the amount of energy decrease along a food chain?
a)
Energy is lost as heat and used for survival
b)
Energy is gained at each link
c)
Energy is stored in the environment
d)
Energy is fully transferred to the next link
|
|
Torcia Education answered |
Energy decreases along a food chain because some is lost as heat, used for survival, or not transferred, reducing the amount available to the next link.
Chapter doubts & questions for Food Chains and Food Webs - Year 6 Science IGCSE (Cambridge) 2025 is part of Class 6 exam preparation. The chapters have been prepared according to the Class 6 exam syllabus. The Chapter doubts & questions, notes, tests & MCQs are made for Class 6 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests here.
Chapter doubts & questions of Food Chains and Food Webs - Year 6 Science IGCSE (Cambridge) in English & Hindi are available as part of Class 6 exam.
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Year 6 Science IGCSE (Cambridge)
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