Organism and population - Quiz 2

Next to temperature, which is the most important factor influencing the life of organisms?

• Light

• Soil

• Water

• Wind velocity

Which of the following statements is false?

• Earth’s climate has varied in temperature over time

• Natural selection acts on the genetic variability present in the population so that it can adapt

• The physical and biotic environments do not interact

• The productivity and distribution of plants is heavily dependent upon on water

Which of the following might contribute to determining an organism’s habitat?

• Amount of sunlight

• Temperature of soil

• Humidity and other organisms

• All

The location of terrestrial biomes is strongly influenced by –

• Animal species which live in the area

• Climate

• Other nearby biomes

• Plant species which live in the area

Seasons are influenced by –

• The tilt of earth on its axis

• The amount of solar radiation reaching earth’s surface

• Earth’s movement around the sun

• All

In regions of hot temperatures and wet climate, you will most likely find ___________ biomes, whereas in the regions of hot temperature and dry climate you will find ____________.

• Desert, tropical

• temperature, arid

• Tropical, desert

• Tundra, chaparral

The ultimate source of energy for all ecosystems on earth is –

• Photosynthesis

• Sun

• ATP

• Creatine phosphate

Deep (> 500m) in the oceans inhabitants are not aware of existence of a celestial source of energy called –

• Sun

• ATP

• Photosynthesis

• Chemosynthesis

Which of the following term implies the maintenance of relatively constant physical and chemical conditions within organisms?

• Homeostasis

• Adaptation

• Isometry

• Acclimation

Snow leopards are not found in Kerala forests. Which factor is responsible for it?

• Temperature

• Soil

• Water

• Light