La ecosfera y su dinámica

The _________ is the sum of ecosystems on Earth

An ecosystem is made up of...

• A community of living things

• A biocenosis

• A biotope and a physical environment

• A biocenosis and a physical environment.

Factors affecting terrestrial and aquatic ecosystems are...

• • - Terrestrial: Light and temperature.

  • - Aquatic: rains, oxygen and temperature

• • - Terrestrial: rains and temperature.

  • - Aquatic: oxygen nutrients and light

• • - Terrestrial: Light nutrients and oxygen.

  • - Aquatic: temperature and rains

• • - Terrestrial: wind, light and temperature.

  • - Aquatic: bubbles, water and salt

Plants that are highly adapted to droughts can be found...

• In savannahs and hot deserts

• In mediterranean forests and rainforests

• In mediterranean forests and hot deserts

• In esteppes and taigas

In the polar and subpolar zone, trees are only present...

• In polar deserts

• In tundra

• In taiga

• In tundra and taiga

Which pair of pairs is not correct?

• Tundra - Subpolar

  Savannah - Tropical

• Taiga - Subpolar

  Hot desert - Tropical

• Rainforest - Temperate

  Deciduous forest - Temperate

• Esteppes - Temperate

  Hot desert - Tropical

The ______ studies the relationships among organisms and their environment

Which type of relationship is shown in the picture?

• Intraspecific (competition)

• Interspecific

  (neutralism)

• Intraspecific (cooperation)

• Interspecific (predation)

If I go to the kitchen to grab some cookies but my parents tell me "you shall not pass!" It's a case of...

• Amensalism

• Competition by interference

• Parasitism

• Competition by exploitation

When two organisms cooperate to obtain a mutual benefit is called...

• Benefitialism

• Friendlysm

• Mutualism

• Symbiosis

Answer explanation

La esfinge colibrí (Macroglossum stellatarum) liba el rico néctar que le ofrece la planta del género Dianthus, mientras la poliniza... Win-win.