Biology
Grade-7
Easy
Question
How many species have been identified till now?
- 3 million
- 4 million
- 2 million
- 6 million
Hint:
- There are a lot of different species on this earth.
The correct answer is: 2 million
2 million
- Two million species are found till now.
- Total two million species are found on earth till now.
Related Questions to study
Biology
How many creatures are there on the Earth?
- Almost 50 millions of creatures are present on earth or we can say that the number of creatures found on earth is 50 millions.
How many creatures are there on the Earth?
BiologyGrade-7
- Almost 50 millions of creatures are present on earth or we can say that the number of creatures found on earth is 50 millions.
Biology
The increase of populations in certain niches in the ecosystem is limited by _______.
- Limited resources or lack of resources leads increase in compitition between organisms of a population.
- It controls increase in population.
The increase of populations in certain niches in the ecosystem is limited by _______.
BiologyGrade-7
- Limited resources or lack of resources leads increase in compitition between organisms of a population.
- It controls increase in population.
Biology
What will grow rapidly if there are sufficient biotic and abiotic resources and no sickness or predators?
- A population will grow rapidly if:-
- There are sufficient resources available whether those are biotic or abiotic.
- There is no sickness.
- There is no predator.
What will grow rapidly if there are sufficient biotic and abiotic resources and no sickness or predators?
BiologyGrade-7
- A population will grow rapidly if:-
- There are sufficient resources available whether those are biotic or abiotic.
- There is no sickness.
- There is no predator.
Biology
State true or false.
The number of species that may live in an ecosystem is determined by the resources available as well as abiotic variables such as light and water availability, temperature range, and soil type.
- Every organism needs appropriate resources to live a normal life.
- Organisms also have to compete with each other for limited resources.
- So the number of species may live in an ecosystem is determined by the resources available in the ecosystem whether those are biotic or abiotic.
State true or false.
The number of species that may live in an ecosystem is determined by the resources available as well as abiotic variables such as light and water availability, temperature range, and soil type.
BiologyGrade-7
- Every organism needs appropriate resources to live a normal life.
- Organisms also have to compete with each other for limited resources.
- So the number of species may live in an ecosystem is determined by the resources available in the ecosystem whether those are biotic or abiotic.
Biology
Every aspect of an ecosystem, whether directly or indirectly, is reliant on the other.
Is the above statement true or false?
- It's true that each and every aspect of one ecosystem, whether directly or indirectly reliant on the other ecosystem.
Every aspect of an ecosystem, whether directly or indirectly, is reliant on the other.
Is the above statement true or false?
BiologyGrade-7
- It's true that each and every aspect of one ecosystem, whether directly or indirectly reliant on the other ecosystem.
Biology
Rocks, temperature, and humidity are examples of ________________.
- Rocks, temperature and humidity the all are non living and so can be said as abiotic.
Rocks, temperature, and humidity are examples of ________________.
BiologyGrade-7
- Rocks, temperature and humidity the all are non living and so can be said as abiotic.
Biology
Plants, animals, and other species are examples of ___________.
- Animals, plants and other species are biotic as they all have characteristics of living.
Plants, animals, and other species are examples of ___________.
BiologyGrade-7
- Animals, plants and other species are biotic as they all have characteristics of living.
Biology
Which of the following is the best example of exponential growth?
- Bacteria reproduce very rapidly which leads an exponential growth in their population.
Which of the following is the best example of exponential growth?
BiologyGrade-7
- Bacteria reproduce very rapidly which leads an exponential growth in their population.
Biology
y(t) = aekt is the formula to calculate ______growth.
- y(t) = aekt is the formula of exponential growth.
y(t) = aekt is the formula to calculate ______growth.
BiologyGrade-7
- y(t) = aekt is the formula of exponential growth.
Biology
What is exponential growth?
- y(t)= aekt is the formula of exponential growth.
What is exponential growth?
BiologyGrade-7
- y(t)= aekt is the formula of exponential growth.
Biology
When resources become depleted, what happens to the population?
- Depletion of resources leads to decrease in resources and due to which compitition in the animals increases which leads decrease in population.
When resources become depleted, what happens to the population?
BiologyGrade-7
- Depletion of resources leads to decrease in resources and due to which compitition in the animals increases which leads decrease in population.
Biology
English clergyman Thomas Malthus published a book in which year?
- He was an English economist and told about relationship between natural resources and growth of populations.
English clergyman Thomas Malthus published a book in which year?
BiologyGrade-7
- He was an English economist and told about relationship between natural resources and growth of populations.
Biology
When resources are unlimited, what does the population experience?
- Unlimited natural resources decrease compitition between animals for the resources which leads rapid increase in the population.
When resources are unlimited, what does the population experience?
BiologyGrade-7
- Unlimited natural resources decrease compitition between animals for the resources which leads rapid increase in the population.
Biology
Which of the following is a predator?
- Lion is an example of predators.
Which of the following is a predator?
BiologyGrade-7
- Lion is an example of predators.
Biology
Which of the following is prey?
- Predators feed on other creatures and the creatures are known as preys.
Which of the following is prey?
BiologyGrade-7
- Predators feed on other creatures and the creatures are known as preys.
