February Monthly Exam 6th Flashcards
Which are the 3 oceans zone?
Intertidal, neritic and open ocean
What is Neritic zone?
Extends from the low tide line out the edge of continental shelf
What is open ocean zone?
Lies beyond the edge of the continental shelf
Which is the zone with less physical changes?
Open ocean
What are plankton? Examples
Tiny algae and animals that float in the water
•Young fish
•Microscopic crustaceans
What are benthos? Examples
Organisms that inhabit the ocean floor
•sponges
•sea anemones
What are nekton? Examples
Free swimming animals that can move throughout water columns
•squid
•most fishes
•marine mammals
How scientists classify animals in the ocean?
According to where do they live and how they move
Where the majority of organisms live?
Near the surface
What is an ocean food web?
All the feeding relationship that exists in an habitat
What are the 2 tipes of animal reproduction?
Sexual and asexual
What is sexual reproduction?
The sex cells of two parents join together to produce a new organism with the DNA of two parents
What is asexual reproduction?
The parent produce a new organism identical to itself
What are the advantages and disadvantages of sexual reproduction
Advantages: it will have more probabilities to survive
Disadvantage: it take more time to born
Which tipe of reproduction includes egg and sperm cells?
Sexual
What is fertilization?
When the sperm fecund the egg
Two tipes of fertilization
Internal and external
What is the gestation period?
The length time between fertilization and birth
Adult _______ reproduce sexually by releasing sperm and egg
Medusas
Where does the interdidal zone begins?
In the highest tide line
Which are the 3 oceans zone?
Intertidal, neritic and open ocean
What is Neritic zone?
Extends from the low tide line out the edge of continental shelf
What is open ocean zone?
Lies beyond the edge of the continental shelf
Which is the zone with less physical changes?
Open ocean
