Water To Land

Question 1

What are some challenges on land?

Answer 1

Desiccation
Respiration
Reproduction
Locomotion
Senses

Question 2

How is desiccation a challenge on land?

Answer 2

Need to evolve a protection from drying out( coat or skin that prevents body fluids from evaporating)
Example is cuticle in plants- cuticle accumulates more on the top

Question 3

How is respiration a challenge on land?

Answer 3

In water dissolved oxygen and carbon dioxide are exchanges. Organisms will now need to breathe
Stomata
Lungs

Question 4

How is reproduction a challenge on land?

Answer 4

In water and egg and sperm are released in h20, must now reproduce under desiccating conditions. ( alternation of generations/ evolution of amniotes)

Question 5

How is locomotion a challenge on land?

Answer 5

New structures

Question 6

How are senses a challenge on land?

Answer 6

Changes in light sound and smell

Question 7

Trachieds and vessels?

Evolution of vascular tissue

Answer 7

Types of xylem
Gymnosperms- trachieds
Angiosperms- tracheids and vessels

Question 8

Root system evolution

Answer 8

Algae float in water and have holdfasts(root like rhizoids-for anchoring only)

Roots ,,?

Question 9

Haploid=_________
Diploid=________
In alteration of generations

Answer 9

Gametophyte

Sporophyte

Question 10

Haploid n( one copy of genome)
Gametophyte produces\_\_\_

Answer 10

Gametes

Question 11

Not all notes are here

Answer 11

Di

Question 12

When did live on land begin?

Answer 12

500 mya

Life evolved in the seas 3.5 bya