Chapter 6 - Interactions Within Estuaries and Intertidal Zones

Question 1

Difference of producers and consumers.

Answer 1

A producer is an organism that creates its own food or energy. A consumer is an organism that gets its energy by eating plants or animals.

Question 2

How do plants make their own food?

Answer 2

Plants absorb water and nutrients from the soil, take in CO2 from the air, and use sunlight to make food.

Question 3

Classifications of consumers:

Answer 3

• herbivores (plant-eaters)
• carnivores (meat-eaters)
• omnivores (feed on both plants and animals)
• scavengers (animals that eat the carcass or remains of dead organisms)
• decomposers (help breakdown decaying materials and convert them to useful substances, which go back to the soil and be absorbed by plants)

Question 4

An area where a river (or rivers) opens up into the ocean. This is where freshwater meets saline or salty water.

Answer 4

Estuary

Question 5

Importance of estuaries:

Answer 5

• home to a diverse group of plants and animals.
• where mangroves or bakawan grow which are important spawning grounds for fishes and also serve as mating grounds for many shellfishes and crustaceans
• an estuary also provides nesting and feeding sites for animals.

Question 6

An area where land meets ocean water. This area is exposed and dry during low tide and submerged in water during high tide.

Answer 6

Intertidal Zone

Question 7

The intertidal zone is divided into several smaller zones:

Answer 7

• spray zone, high intertidal zone, middle intertidal zone, and low intertidal zone

Question 8

(intertidal zones)

The driest part of the intertidal zone. It is more a part of the land than the ocean.

Answer 8

Spray zone

Question 9

(intertidal zones)

Flooded only once or twice daily during high tides, and is mostly out of water between high tides.

Answer 9

High intertidal zone

Question 10

(intertidal zones)

It is mostly submerged, except for a short period during low tide.

Answer 10

Middle intertidal zone

Question 11

(intertidal zones)

It is generally submerged and exposed only during spring tides.

Answer 11

Low intertidal zone

Question 12

Pools of water in intertidal zones are called ___________.

Answer 12

tide pools

Question 13

Intertidal zones are greatly affected by a variety of human activities such as:

Answer 13

• Irresponsible dumping of waste materials and urban runoff made up of pesticides, industrial chemicals, oil spills, and sewage polluted the waters of the ocean.

Question 14

The largest crocodile captured and measured in an Indo-Pacific crocodile or estuarian crocodile.

Answer 14

Lolong