Super algae quiz ☆

Imagine Camila, Mia, and Luis are on a science adventure and they stumble upon a group of algae. Can you guess the method by which these algae are producing their food?

• Respiration

• Photosynthesis

• Digestion

• Fermentation

Answer explanation

Algae, like plants, are autotrophic organisms, meaning they produce their own food through a process called photosynthesis. Using the energy from sunlight, algae harness the power of chlorophyll, a pigment found in their cells, to convert carbon dioxide and water into glucose (a form of sugar) and oxygen.

Juan observed a type of algae in his aquarium that seemed to increase in number by dividing into fragments. Can this be a true assumption?

• True

• False

Answer explanation

Yes, it is true that algae can reproduce by fragmentation. Fragmentation is a common asexual reproduction method among certain algae species.

Algae boost biodiversity and are fundamental because they provide

(a)  

Answer explanation

"Biodiversity

They are fundamental in aquatic ecosystems, providing habitats for diverse species and contributing to marine biodiversity."

Moises and Natalie are on a treasure hunt! They find a clue saying, 'The treasure is hidden where most algae are found.' Where should they look?

• The vast, dry desert

• The dense, green forest

• The towering, chilly mountains

• The deep, blue aquatic environments

Which of the following is a characteristic of microscopic algae?

• Multicellular

• Contain chlorophyll

• Have root-like structures

• Form complex structures

Answer explanation

They have a cellular structure that includes:

A nucleus

Chloroplasts (containing pigments such as chlorophyll a and b)

(In some cases) flagella for mobility.

They are fundamental in aquatic ecosystems, providing habitats for diverse species and contributing to marine biodiversity.

During a field trip to the beach, David and Natalia were observing some algae. They noticed that some algae use holdfasts and rhizoids to anchor themselves. Is this observation correct?

• True

• False

Answer explanation

Some algae have root-like structures called holdfasts and rhizoids to anchor themselves to the soil

What is the role of algae in mitigating climate change?

• Producing oxygen

• Capturing carbon

• Increasing biodiversity

• Providing food

Answer explanation

"The high emission of greenhouse gases has been one of the foremost global threats with far-reaching consequences. Scientists have indicated that algae are extremely important to reach the global aim of zero carbon emissions by 2050. "

Jose and Camila were asked what distinguishes a microscopic alga from a macroscopic alga in terms of structure. They have to answer in less than a minute. Which answer can Jose choose to beat Camila?

• Microscopic algae have flagella

• Microscopic algae have rhizoids

• Macroscopic algae have flagella

• Microscopic algae have thalluses

Answer explanation

Microscopic algae have flagella for mobility