JAMB Exam > JAMB Videos > Biology for JAMB > Level of Consumers
Level of Consumers Video Lecture | Biology for JAMB
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FAQs on Level of Consumers Video Lecture - Biology for JAMB
| 1. What are the different levels of consumers in an ecosystem? |  |
Ans. In an ecosystem, consumers are classified into three main levels based on their feeding habits. The primary consumers, also known as herbivores, feed directly on producers (plants). The secondary consumers, or carnivores, prey on other consumers, while the tertiary consumers, or top carnivores, are typically at the highest level of the food chain and feed on both primary and secondary consumers.
| 2. How do primary consumers obtain their energy in an ecosystem? | |
Ans. Primary consumers obtain their energy by consuming producers (plants). They predominantly feed on plant materials, such as leaves, fruits, and seeds. Through this consumption, primary consumers break down the organic matter in plants and convert it into energy that they can use for their own growth and survival.
| 3. What is the importance of consumers in an ecosystem? | |
Ans. Consumers play a crucial role in maintaining the balance and functioning of an ecosystem. They regulate population sizes of other organisms, control the flow of energy and nutrients through food webs, and contribute to the overall biodiversity of an ecosystem. Without consumers, the population of certain species would grow uncontrollably, leading to imbalances and potential collapse of the ecosystem.
| 4. How do secondary consumers differ from primary consumers in terms of feeding habits? | |
Ans. Secondary consumers differ from primary consumers in terms of their feeding habits. While primary consumers feed directly on producers (plants), secondary consumers are carnivores that consume other consumers. They prey on primary consumers or other secondary consumers to obtain their energy. This difference in diet allows secondary consumers to obtain energy indirectly from the plant materials consumed by primary consumers.
| 5. Can consumers be omnivores? | |
Ans. Yes, consumers can be omnivores. Omnivores are organisms that have a diverse diet and consume both plant materials and other animals. They are capable of obtaining energy from both primary producers and other consumers. Examples of omnivores include humans, bears, and raccoons. Their ability to adapt their feeding habits allows them to occupy various niches within an ecosystem.
Text Transcript from Video
hi I'm Mary pop and rock and I'm an
agile professor of biology today we're
going to be talking about trophic
structure trophic structure is
essentially the feeding relationships
among organisms in a community these
feeding relationships are essential to
the hierarchy of how this community
works let's start at the bottom with our
producers producers are going to be the
only ones that are able to harness the
power of the sun's energy to make into
glucose these of course are going to be
our autotrophs as you move up the food
chain towards the apex predator you're
seeing lots of different consumers pass
those producers our first level consumer
is our primary consumers these consumers
are going to consume well the producers
at the very bottom may give it kind of
like a pyramid going from the very large
at the bottom to the very pinnacle at
the top we also have secondary tertiary
and our cordon areare fourth level
consumers as you go up the food chain
you start to lose more and more energy
in fact each trophic level that you've
increased you lose 90% of the energy
originally harnessed from the Sun so now
let's use a real-world example to
illustrate our concept here so we're
gonna start at the bottom with our
producers let's use a sunflower this
sunflower is going to be eaten by a
primary consumer for example we'll say a
grasshopper this grasshopper is then
going to be eaten by a secondary
consumer let's say a field mouse that
field mouse is then going to be eaten by
a tertiary or third level consumer let's
say a rattlesnake and that rattlesnake
can then be eaten by a cordon Airi or
apex predator in our example the red
tail hawk will do just fine
trophic structure continues to drive
evolution as prey become better adapted
at avoiding predators and those
predators get better adapted to getting
their prey thanks for watching and if
you want to learn more about this
subject click on the link below or if
you want to learn more biology feel free
to click on any links around me and
please rate comment and subscribe to
this channel or maybe if you have ideas
for more videos send us an email a
request at Mahalo com thanks for
learning
you
[Music]
agile professor of biology today we're
going to be talking about trophic
structure trophic structure is
essentially the feeding relationships
among organisms in a community these
feeding relationships are essential to
the hierarchy of how this community
works let's start at the bottom with our
producers producers are going to be the
only ones that are able to harness the
power of the sun's energy to make into
glucose these of course are going to be
our autotrophs as you move up the food
chain towards the apex predator you're
seeing lots of different consumers pass
those producers our first level consumer
is our primary consumers these consumers
are going to consume well the producers
at the very bottom may give it kind of
like a pyramid going from the very large
at the bottom to the very pinnacle at
the top we also have secondary tertiary
and our cordon areare fourth level
consumers as you go up the food chain
you start to lose more and more energy
in fact each trophic level that you've
increased you lose 90% of the energy
originally harnessed from the Sun so now
let's use a real-world example to
illustrate our concept here so we're
gonna start at the bottom with our
producers let's use a sunflower this
sunflower is going to be eaten by a
primary consumer for example we'll say a
grasshopper this grasshopper is then
going to be eaten by a secondary
consumer let's say a field mouse that
field mouse is then going to be eaten by
a tertiary or third level consumer let's
say a rattlesnake and that rattlesnake
can then be eaten by a cordon Airi or
apex predator in our example the red
tail hawk will do just fine
trophic structure continues to drive
evolution as prey become better adapted
at avoiding predators and those
predators get better adapted to getting
their prey thanks for watching and if
you want to learn more about this
subject click on the link below or if
you want to learn more biology feel free
to click on any links around me and
please rate comment and subscribe to
this channel or maybe if you have ideas
for more videos send us an email a
request at Mahalo com thanks for
learning
you
[Music]
About this Video
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Nov 22, 2024 Last updated |
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