State true or false.
One species is feeding on the other species in a predator-prey relationship.

Which theory was proposed by Charles Darwin?

• According to the theory of Charles Darwin, nature allows only those organisms to survive which compete for the resources and survive.
• Only these organisms can pass their characteristics to next generation.

State true or false.
When infinite natural resources are available, only then exponential growth is possible, which is not the case in the real world.

• Exponential growth is a sharp increase over time in a population which is caused by unlimited natural resources.

Logistic growth shows which type of curve?

Logistic growth shows growth of a population in three parts:

• Firstly increase in population slowly
• Then it increases rapidly
• And when there is enough increase in the population, it starts getting decrease.

In a logistic type of growth, what happens to population expansion?

• In logistic growth firstly a population increases slowly, then rapidly and then goes on a decrease.

When resources are limited, the population exhibits which type of growth?

• Logistic growth shows increase in a population slowly first, then rapid and then the population goes on a decrease.

Exponential growth shows which shaped curve?

• Exponential growth shows J shaped curve and it is a sharp increase over time in a population.

Which of the following can be termed bacteria?

• Prokaryotes are the organisms which have lack of membrane bound organelles and a true nucleus.

Which relationship is made up of interactions between two species and their consequent effects on each other?

• Predator and prey relationship shows interactions between two species where one species feeds on other species.

Some animals are _____ for others.

• In predator and prey relationship preys are the resources of predators.

Which of the following will make an individual weaker?

• Lack of resources increase compitition in organisms which makes an organism weaker.

Animals and plants do not have a ______ when forests are cleared for human use.

• Forests provide habitat to plants and animals.

When drought occurs, what happens to plants and animals?

• Without water plants can't perform photosynthesis and water is also essential for survival of animals.

Availability of resources can be affected by which of the following?

• There are many reasons behind decrease in resources like humans activities, pollution etc .

Limited resources can also lead to ______.

• Limited resources lead to decrease in population.

Limited resources lead to what?

• Limited resources lead decrease in population and increase in compitition.