ESS
Grade-7
Easy
Question
The fossil given in the picture is formed by _________.
- Cyanobacteria
- Mycobacteria
- Agrobacterium
- Enterobacteriaceae
The correct answer is: Cyanobacteria
Stromatolites are widely accepted as the oldest fossils. The oldest stromatolite is estimated to be around 3.5 billion years old. These fossils were formed by cyanobacteria, the ancient blue-green algae. Most of the stromatolites identified so far are old and dead. In 1956, extremely rare living stromatolites were identified from the Hamelin pool of Western Australia.
Related Questions to study
ESS
Which of the following fossils is given in the picture?
Which of the following fossils is given in the picture?
ESSGrade-7
ESS
Match the following:
| A. |
Ancestor of modern vertebrates |
i. |
Stromatolites |
| B. |
Oldest fossils |
ii. |
Redlichiida |
| C. |
Ancient eukaryotes |
iii. |
Pikaia |
| D. |
Trilobite fossils |
iv. |
Seaweed-like Fossils |
Match the following:
| A. |
Ancestor of modern vertebrates |
i. |
Stromatolites |
| B. |
Oldest fossils |
ii. |
Redlichiida |
| C. |
Ancient eukaryotes |
iii. |
Pikaia |
| D. |
Trilobite fossils |
iv. |
Seaweed-like Fossils |
ESSGrade-7
ESS
The current geological epoch of Earth is known as ___________.
The current geological epoch of Earth is known as ___________.
ESSGrade-7
ESS
Which is the correct order of geological time scale from longest to shortest?
Which is the correct order of geological time scale from longest to shortest?
ESSGrade-7
ESS
Most geologists think that the movement of Earth’s plates is caused by subduction. State true or false.
Most geologists think that the movement of Earth’s plates is caused by subduction. State true or false.
ESSGrade-7
ESS
Folding is caused by a force of tension. State true or false.
Folding is caused by a force of tension. State true or false.
ESSGrade-7
ESS
Where two plates are moving apart, magma comes up to create a new crust and makes a trench. State true or false.
Where two plates are moving apart, magma comes up to create a new crust and makes a trench. State true or false.
ESSGrade-7
ESS
The rigid tectonic plates of Earth move in response to convection currents. State true or false.
The rigid tectonic plates of Earth move in response to convection currents. State true or false.
ESSGrade-7
ESS
Choose the correct sentences for folding and faulting, respectively.
1. It occurs when the Earth's rock layers are folded.
2. It occurs when the Earth’s crust gets cracked.
3. It takes place when two lithospheric plates collide with each other.
4. It takes place when two lithospheric plates move away from each other.
5. An example is Himalaya mountain.
6. Examples are block mountains and rift valleys.
Choose the correct sentences for folding and faulting, respectively.
1. It occurs when the Earth's rock layers are folded.
2. It occurs when the Earth’s crust gets cracked.
3. It takes place when two lithospheric plates collide with each other.
4. It takes place when two lithospheric plates move away from each other.
5. An example is Himalaya mountain.
6. Examples are block mountains and rift valleys.
ESSGrade-7
ESS
Choose the process shown in the image.
Choose the process shown in the image.
ESSGrade-7
ESS
Which sentence supports the process of subduction?
Which sentence supports the process of subduction?
ESSGrade-7
ESS
The North American plate and the Pacific plate are sliding past each other in opposite directions (at the San Andreas fault), this is called a ________________ boundary.
The North American plate and the Pacific plate are sliding past each other in opposite directions (at the San Andreas fault), this is called a ________________ boundary.
ESSGrade-7
ESS
Which of the following is formed due to convergent boundaries where two continental plates collide?
Which of the following is formed due to convergent boundaries where two continental plates collide?
ESSGrade-7
ESS
Select the features of transform boundaries.
Select the features of transform boundaries.
ESSGrade-7
ESS
What kind of boundary is shown in this diagram?
What kind of boundary is shown in this diagram?
ESSGrade-7
