What is Competition (Biology)?

S4-SA3-0056

Grade Level:

Class 6

Space Technology, EVs, Climate Change, Biotechnology, HealthTech, Robotics, Chemistry, Physics

Definition

What is it?

In biology, competition happens when two or more living things, like plants or animals, need the same limited resources to survive and grow. These resources could be food, water, sunlight, space, or even mates. Because resources are limited, they have to 'compete' for them.

Simple Example

Quick Example

Imagine two children both wanting to play with the same cricket bat, but there's only one bat available. They both need the bat to play, so they are competing for that one resource. Similarly, two plants might compete for the same sunlight in a garden.

Worked Example

Step-by-Step

Let's say we have a small patch of garden soil, enough for 5 plants to grow well. --- Step 1: We plant 10 marigold seeds very close together in this small patch. --- Step 2: As the seeds sprout, all 10 young plants try to get sunlight, water, and nutrients from the soil. --- Step 3: Since the soil and sunlight are limited resources, not all 10 plants will get enough to grow strong and healthy. --- Step 4: The stronger or better-placed plants will get more resources, growing bigger. The weaker ones will struggle and might not survive or grow well. --- Step 5: This struggle for limited resources (soil, water, sunlight) among the marigold plants is an example of competition in biology. --- Answer: The plants are competing for limited resources.

Why It Matters

Understanding competition helps scientists study how different species survive and how ecosystems work. This knowledge is crucial in fields like Biotechnology for developing stronger crops, and in Climate Change studies to predict how species might adapt or disappear. It's also important for environmental scientists managing wildlife.

Common Mistakes

MISTAKE: Thinking competition only happens between different types of animals. | CORRECTION: Competition can happen between individuals of the SAME species (like two mango trees competing for sunlight) AND between different species (like a lion and a hyena competing for the same deer).

MISTAKE: Believing competition always means physical fighting. | CORRECTION: While fighting can be a part of it, competition often involves a 'race' or 'struggle' for resources without direct physical contact, like plants growing taller to reach sunlight.

MISTAKE: Assuming competition is always bad for all living things involved. | CORRECTION: While some individuals might lose out, competition can drive evolution, making species stronger and more adaptable over many generations. It helps maintain a balance in nature.

Practice Questions

Try It Yourself

QUESTION: A small pond has limited food. If many fish are introduced, what will happen to the food available for each fish? | ANSWER: The food available for each fish will decrease, leading to competition.

QUESTION: Two types of birds, sparrows and mynas, both eat grains found in the same field. What kind of interaction is this? | ANSWER: This is an example of competition between two different species for the same food resource.

QUESTION: In a forest, a tall banyan tree and a small shrub are growing next to each other. For what resources might they be competing, and why? | ANSWER: They might be competing for sunlight (banyan tree shades the shrub), water, and nutrients from the soil, because both need these to grow and survive in the same area.

MCQ

Quick Quiz

What is the main reason living things compete in biology?

To become the strongest in the group

Because resources like food and space are limited

To play games with each other

To make new friends

The Correct Answer Is:

Living things compete primarily because the resources they need to survive, like food, water, sunlight, and space, are not endless. Options A, C, and D are not the fundamental biological reason for competition.

Real World Connection

In the Real World

You can see competition in your own backyard! If you plant too many seeds in a small pot, they will compete for water and nutrients. In wildlife sanctuaries like Ranthambore, tigers compete with other predators for prey, and even among themselves for territory. Forest departments need to understand this to manage animal populations.

Key Vocabulary

Key Terms

RESOURCES: Things living organisms need to survive, like food, water, sunlight, space | SPECIES: A group of living organisms that can reproduce with each other | ECOSYSTEM: A community of living organisms interacting with their non-living environment | POPULATION: All the organisms of the same species living in a particular area

What's Next

What to Learn Next

Great job understanding competition! Next, you can learn about 'Cooperation in Biology'. It's interesting to see how living things sometimes work together instead of competing, which is another important way they survive and thrive in nature.