Intertidal Zone Review

The ____________________ is the area between the average high-tide mark and average low-tide mark on a shoreline.

• Estuary

• Delta

• Tidal average

• Intertidal zone

Organisms that live inside the substrate and have adaptations for digging are called ___________________.

• Infauna

• Epifauna

• Tidal

• Pelagic

Organisms that live on top of the substrate and have adaptations for attaching to rocks are called ___________.

• Infauna

• Epifauna

• Tidal

• Pelagic

Which of the following is an adaptation that would help prevent desiccation in intertidal zone organisms?

• Skin with a large surface area

• “Clamming up” or closing off shells

• Crawling up out of the substrate when waves go out

• Byssal threads to attach to rocks

Tags

NGSS.MS-LS1-5

Which of the following is the MOST common challenge for organisms living in the intertidal zone to adapt to?

• Extreme temperature & salinity changes

• High primary productivity

• High level of nutrients

• Moving substrate

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which organisms would likely live in the spray or splash zone of a rocky shore intertidal zone?

• Seaweed, algae, sea stars & urchins

• Limpets, shrimp & sharks

• Barnacles & snails

• Mussels, rockweed, & crabs

Which of the following groups of organisms would likely be found in the low tide zone of a rocky shore?

• Seaweed, algae, sea stars & urchins

• Barnacles & snails

• Sea birds & hermit crabs

• Sharks & dolphins

Seagrasses, algae, & diatoms are _________ in rocky shore ecosystems.

• Tertiary consumers

• Primary producers

• Secondary consumers

• Primary consumers

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following is NOT a challenge for organisms living in the intertidal zone?

• Competition for space

• Interrupted feeding when waves/tides go out

• Gas exchange is limited when waves/tides go out

• High primary productivity

The highest zone of sandy shores is characterized by sand dunes, terrestrial plants, and few aquatic organisms. Water is pulled downward by gravity when the tides go out, so the sand is very dry. This zone of the sandy shore is called the ___________.

• Zone of Drying

• Zone of Resurgence

• Zone of Retention

• Zone of Saturation