Fossils area)remains of plants and animals in the rocks.b)the old rocks.c)the old books related to the origin of the earth.d)the dust particles.Correct answer is option 'A'. Can you explain this answer?

Question

Answer

Fossils are the preserved remains or traces of animals, plants, and other organisms from the remote past. Fossils vary in size from microscopic, such as single bacterial cells only one micrometer in diameter, to gigantic, such as dinosaurs and trees many meters long and weighing many tons.

Answer

Fossil include , shells, bones , Stone imprints of animals or microbes , exoskeletons, objects preserved in amber, petrified wood, coal , hair , oil & DNA remnants ....

Answer

Fossils are remains of plants and animals in the rocks.

Fossils are the preserved remains or traces of plants and animals that lived in the past. They provide important evidence about the history of life on Earth and how it has changed over time. Fossils are typically found in rocks, as they are formed when the remains or traces of organisms become buried in sediment and are preserved by various geological processes.

Formation of Fossils
Fossils are formed through a series of processes that occur over long periods of time. Here is a brief overview of how fossils are formed:

1. Death and Burial: When an organism dies, its remains or traces can become buried in sediment, such as mud or sand. This burial helps to protect the remains from decay and scavengers.

2. Decay and Decomposition: Over time, the soft tissues of the organism decay and decompose. However, hard parts like bones, shells, teeth, and plant material can sometimes be preserved.

3. Sedimentation: As more layers of sediment accumulate over the buried remains, pressure and compaction turn the sediment into sedimentary rocks, such as sandstone or limestone. These rocks can preserve the fossils within them.

4. Permineralization: In some cases, minerals carried by water seep into the buried remains and replace the original organic material with minerals. This process is called permineralization and can create detailed replicas of the original organism.

5. Molds and Casts: Sometimes, the remains of an organism dissolve over time, leaving behind an empty space or mold in the rock. If this mold gets filled with sediment or minerals, it can create a cast that preserves the shape of the original organism.

6. Trace Fossils: Fossils are not always the remains of the organism itself. They can also be traces left behind by the organism, such as footprints, trails, burrows, or coprolites (fossilized feces). These trace fossils provide valuable information about the behavior and activities of ancient organisms.

Importance of Fossils
Fossils are extremely valuable for understanding the history of life on Earth. They provide evidence of past environments, climate change, evolution, and the relationships between different species. Some key points about the importance of fossils are:

- Evolutionary Studies: Fossils help to trace the evolution of different species and understand how they have changed over time. They provide a record of extinct organisms and the transitional forms between different species.

- Paleoenvironmental Reconstruction: Fossils can provide information about ancient environments and ecosystems. By studying the types of organisms present in a fossil assemblage, scientists can infer the climate, vegetation, and other environmental conditions of the past.

- Stratigraphy and Dating: Fossils are useful for dating rocks and establishing the relative ages of different geological formations. By comparing the fossils found in different rock layers, scientists can determine the sequence of events and the order in which they occurred.

- Economic Significance: Fossils can also have economic significance. For example, fossil fuels like coal, oil, and natural gas are formed from the remains of ancient plants and animals. Fossilized remains of ancient organisms can also provide valuable information about the history of agriculture, medicine, and other human activities.

In conclusion, fossils are the remains or traces of plants and animals that have been preserved in rocks. They are formed

Answer

It is the remains (plant and animals) which are called fossils. the remains trapped in the rocks. and not the rocks by itself.and definitely not dust particles.

Similar UPSC Doubts

The remains of the dead plants and animals trapped in the layers of rocks are called

Fossils are the remains of dead _______

With respect to the history of the Ancient India, the terms such as ‘Ramapithecus’ and‘Sivapithecus’ were used to represent

Top Courses for UPSCView all

Current Affairs & Hindu Analysis: Daily, Weekly & Monthly

Lucent for GK

History for UPSC CSE

Indian Polity for UPSC CSE

CSAT Preparation

Top Courses for UPSC

Top Courses for UPSC

Related Content

About UPSC

UPSC Preparation Material

NCERT Based Study Material

How to Prepare for UPSC Exam?

Famous Books for UPSC Exam

UPSC Subjects

UPSC Optionals

Other Popular Exams

Company