Organisms in Sandy and Muddy Shores

The video explores the zonation of organisms in rocky intertidal zones, focusing on the adaptations and characteristics of organisms in different beach environments, including rocky, sandy, and muddy shores. It discusses the environmental factors affecting these zones, such as sunlight exposure and nutrient availability, and explains the feeding strategies of various organisms, including suspension feeding, deposit feeding, and carnivory.

What type of organisms are typically found in the low tide areas of the rocky intertidal zone?

• Sessile organisms

• Hard-shelled organisms

• Microscopic plants

• Soft-shelled organisms

Why are sandy shores considered challenging environments for organisms?

• They are nutrient-poor and conditions change rapidly

• They have stable conditions

• They are nutrient-rich

• They are always submerged

What is a key difference between coarse and fine sandy beaches?

• Coarse beaches have more water retention

• Fine beaches have more water retention

• Fine beaches are nutrient-poor

• Coarse beaches are nutrient-rich

Which organisms are likely to be found in fine sandy beaches?

• Microscopic plants

• Sessile organisms

• Hard-shelled organisms

• Sand dollars and ghost crabs

How do organisms in sandy shores protect themselves from predators?

• By using camouflage

• By staying on the surface

• By burrowing deeply

• By forming permanent tubes

What is a common adaptation of organisms in muddy shores?

• High affinity for oxygen

• Low affinity for oxygen

• Ability to fly

• Ability to photosynthesize

What is the primary food source for organisms in muddy shores?

• Terrestrial plants

• Birds

• Phytoplankton and benthic algae

• Large fish

Which feeding strategy involves trapping suspended particles from water?

• Suspension feeding

• Deposit feeding

• Carnivorous feeding

• Herbivorous feeding

What is a characteristic of organisms that use deposit feeding?

• They filter water for food

• They feed on live prey

• They consume detritus brought by waves

• They photosynthesize

Which organisms are known to feed on shelled organisms like barnacles and mussels?

• Sea anemones

• Clams

• Starfish

• Sea urchins