Sci10 Q3 Biodiversity and Stability

When a change occurs in the environment, what will organisms do?

• adapt

• adapt, migrate or die

• die

• migrate or die

Which of the following is an ecosystem?

• rice field

• sunlight

• temperature

• thunderstorm

A person breeds rabbits in a cage. After a few generations, the breeder

observes that the rabbits are more aggressive towards each other, the young

are less healthy and more young rabbits die. What do you think will happen

to the population of the rabbits?

• The population will not be affected.

• The population will decrease.

• The population will increase.

• The population will remain the same.

What makes an ecosystem LESS DIVERSE?

• It has few numbers of different life forms.

• It has high index of diversity.

• It includes many different forms of life

• It can withstand environmental changes.

Why are invasive species a threat to biodiversity?

• They can be of help to other organisms.

• They can be beneficial to humans.

• They can increase the number of resources.

• They can outcompete native organisms for their resources.

6. Cocolisap infestation outbreak has been declared in some parts of the

Philippines. The cocolisap feeds on the sap of the coconut tree and injects

toxic enzymes, resulting in discolored leaves and deformed plant tissues

that retard the growth of coconut tree. This results in a decrease of the

survival rate of coconut trees. Which of the following factors limit the

population of coconut trees?

• competition for resources

• diseases and parasites

• emigration

• predation

Which of the following is NOT a benefit of biodiversity?

• agriculture

• deforestation

• ecotourism

• medicine

Which of the following statements BEST describes adaptation?

• It improves the organism’s ability to survive.

• It is a place where an organism lives.

• It is a stage in an animal’s life cycle.

• It prevents an organism’s ability to survive.

If animals cannot adapt to changes in their environment, what is likely to

happen?

• They will die.

• They will hibernate.

• They will migrate.

• Both A and C are correct.

How should the rainforest be used to conserve its resources?

• Advertise it as a camping site.

• Cut the trees into logs and make timber.

• Replant replacement trees every time a tree is cut.

• Turn it into a logging area.