Algae and Their Dietary Habits

In a 2021 study, researchers found that certain algae consume live bacteria, aiding their growth. These algae are mixotrophs, capable of photosynthesis and consuming other organisms. Surprisingly, they ate more bacteria than anticipated, possibly due to the nutrients they gain. However, when offered dead bacteria, the algae showed disinterest, likely because they struggle to recognize deteriorated bacteria.

What characteristic allows algae to both photosynthesize and consume other organisms?

• Heterotrophic

• Autotrophic

• Mixotrophic

• Saprotrophic

Why might algae have a preference for consuming live bacteria?

• Live bacteria are more abundant

• Live bacteria are tastier

• Live bacteria provide more nutrients

• Live bacteria are easier to digest

What was the reaction of algae when offered dead bacteria?

• They ignored them

• They partially consumed them

• They consumed them eagerly

• They stored them for later

What hypothesis did scientists propose about algae's interaction with dead bacteria?

• Algae prefer the taste of live bacteria

• Algae cannot digest dead bacteria

• Algae have difficulty recognizing dead bacteria

• Algae are afraid of dead bacteria

What do some algae prefer over a 'hot cooked meal'?

• A spicy dish

• A hot pursuit

• A cold snack

• A warm drink