Marine Algae and Diatoms Test

What are the different types of marine algae?

• Fish, sharks, and dolphins

• Red algae, brown algae, and green algae

• Seaweed, kelp, and coral

• Blue algae, yellow algae, and purple algae

Explain the life cycle of diatoms.

• The life cycle of diatoms involves three main stages: the vegetative stage, the dormant stage, and the hibernation stage.

• The life cycle of diatoms involves four main stages: the vegetative stage, the reproductive stage, the dormant stage, and the senescence stage.

• The life cycle of diatoms involves only one stage: the reproductive stage.

• The life cycle of diatoms involves two main stages: the vegetative stage and the reproductive stage.

What are some adaptations of marine algae to their environment?

• Predation, aerial roots, high temperature tolerance, and production of camouflage compounds

• Hibernation, root system, low temperature tolerance, and production of sunscreen compounds

• Photosynthesis, holdfasts, high salinity tolerance, and production of protective compounds

• Bioluminescence, migration, low salinity tolerance, and production of toxic compounds

Describe the diversity of marine algae.

• Marine algae only differ in terms of size.

• Marine algae are all green and have the same pigmentation.

• Marine algae exhibit a wide range of diversity in terms of species, pigmentation, size, and habitat.

• Marine algae have no diversity and are all the same.

How do diatoms contribute to carbon cycling?

• By decomposition

• By photosynthesis

• By chemosynthesis

• By respiration

Name one type of marine algae that is commonly found in coral reefs.

• kelp

• moss

• fern

• seaweeds

What is the primary pigment responsible for photosynthesis in marine algae?

• chlorophyll a

• carotenoids

• chlorophyll b

• phycobilins

What is the role of marine algae in providing oxygen to the atmosphere?

• Marine algae consume oxygen through photosynthesis.

• Marine algae have no role in providing oxygen to the atmosphere.

• Marine algae release carbon dioxide through photosynthesis.

• Marine algae produce oxygen through photosynthesis.

How do marine algae obtain nutrients for growth?

• By absorbing nutrients through their roots

• By consuming other marine organisms

• By obtaining nutrients from the water through osmosis

• Photosynthesis

Explain the process of diatom reproduction.

• Diatom reproduction involves binary fission, where diatoms divide into two identical daughter cells through the splitting of their cell wall.

• Diatom reproduction involves budding, where diatoms produce a smaller daughter cell that eventually detaches.

• Diatom reproduction involves spore formation, where diatoms release spores that develop into new diatoms.

• Diatom reproduction involves sexual reproduction, where diatoms exchange genetic material with other diatoms.