CBSE Class 9 Science Cell: The Building Block of Life (Class 9 NCERT New) Quiz 4

1. Where is it widely accepted by the scientific community that life originally originated?

A On dry land B In water C In glaciers D In the upper atmosphere

2. In India, which valley's hot springs maintain very high temperatures near the boiling point of water and host thermophiles?

A Nubra Valley B Puga Valley C Zanskar Valley D Kangra Valley

3. What type of organisms are heat-loving bacteria found in extreme hot springs?

A Halophiles B Thermophiles C Acidophiles D Psychrophiles

4. Researchers from which institute studied India's hot springs and discovered rapid calcium carbonate deposition?

A Birbal Sahni Institute of Palaeosciences, Lucknow B Indian Institute of Science, Bengaluru C Tata Institute of Fundamental Research, Mumbai D National Botanical Research Institute, Lucknow

5. Which of the following is a single-celled (unicellular) organism?

A Fish B Yeast C Bird D Human

6. What is formed when a group of similar cells perform a similar function?

A Organ B Tissue C Organ System D Organism

7. Nasal pores, nasal cavity, trachea, and lungs collectively form which system?

A Digestive system B Circulatory system C Respiratory system D Nervous system

8. What is defined as the ability of the human eye to see two very close objects as separate and distinct?

A Magnification B Contrast C Limit of resolution D Focal length

9. When viewed from a standard near point of 25 cm, what is the limit of resolution of the human eye?

A 1.0 mm B 0.5 mm C 0.1 mm D 0.01 mm

10. Who was the first person to observe cells in the year 1665?

A Antonie van Leeuwenhoek B Robert Hooke C Robert Brown D Camillo Golgi