Chapter 1: Q. 4 (page 27)

The first form of life on Earth were ________
a. plants
b. microorganisms
c. birds
d. dinosaurs

Short Answer

Expert verified

As the result, the correct option is $b$ .

Step by step solution

Explanation Incorrect answer (a), (c) and (d)

As a result, choices a, c and d are erroneous.

Microorganisms are thought to be the initial forms of life on Earth, based on numerous evidences. This is due to the fact that they have existed for billions of years before other animal or plant living organisms formed. Microorganisms are a broad category of organisms that includes archaea, bacteria, protozoa, algae, and fungi, among others.

Explanation Correct answer (b)

The planet Earth is home to a diverse range of life forms. Plants, birds, and animals such as dinosaurs were only around $130$ to $200$ million years old when they first appeared. As a result, these living forms are relatively new.

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The first form of life on Earth were ________
a. plants
b. microorganisms
c. birds
d. dinosaurs

Short Answer

Step by step solution

Explanation Incorrect answer (a), (c) and (d)

Explanation Correct answer (b)

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The first form of life on Earth were ________a. plantsb. microorganismsc. birdsd. dinosaurs

Short Answer

Step by step solution

Explanation Incorrect answer (a), (c) and (d)

Explanation Correct answer (b)

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Biology Textbooks

Energy Transfers

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Study anywhere. Anytime. Across all devices.

The first form of life on Earth were ________
a. plants
b. microorganisms
c. birds
d. dinosaurs