Ch 3.4 Development Of The Zygote

Question 0

Whats a seed? What does it contain?

Answer 0

A fertilized egg in the ovary of the flower

It contains the embryo and stores foo

Question 1

Whats an embryo?

Answer 1

The result of a sperm and egg fusing together

Question 2

Whats a cotyledon?

Answer 2

Seeds that contain seed leaves

Question 3

What are dicotyledons?

Answer 3

Plants that produce seeds with two seed leaves

Question 4

What is monocotyledons?

Answer 4

Seeds that produce one cotyledon

Question 5

Whats to germinate?

Answer 5

To grow

Question 6

Whats a radicle?

Answer 6

The part of the embryo that develops into roots

Question 7

Whats an epicotyl?

Answer 7

It becomes the stem and leaves

Question 8

Whats a hypocotyl?

Answer 8

It pushes up through the soul and protects the epicotyl

Question 9

What do eggs contain?

Answer 9

Zygote, nutrients and a mechanism for protection

Question 10

What do the eggs of reptiles and birds contain?

Answer 10

A single embryo surrounded by a cell (amniotic egg)

Question 11

Whats an albumen?

Answer 11

Cushions the embryo and its an additional source of food

Question 12

Whats an amnion?

Answer 12

Fluid like sac, cushions the embryo

Question 13

Whats a yolk sac?

Answer 13

It stores food for the embryo

Question 14

whats a chorion and a allantois?

Answer 14

It controls the movement of gases and wastes in and out the egg

Question 15

Name three types of parental care

Answer 15

Birds sit on their eggs to keep them warm or insulating them with their feathers
Sea turtle mothers dig hole in sand, lay their eggs, bury them, then leave
Parasitic tapeworms live in the intestines of animals, they release egg cases that contain thousands of eggs

Question 16

What are the 3 living species of monotremes? What is monotremes?

Answer 16

The duckbill platypus and two species of spiny ant eaters

Mammals that lay eggs

Question 17

Whats placenta?

Answer 17

Organ that develops around the fetus and connects to the mother

Question 18

Whats a fetus?

Answer 18

Developing offspring

Question 19

Whats an umbilical cord?

Answer 19

Connected to the fetus

Carries wastes out of fetus and nutrients into the fetus

Question 20

What are marsupials?

Answer 20

The embryos of these animals are born very tiny young and immature because they do not develop very long inside the mother
They climb out of the mums birth canal in to the fur pouch where they attach to the nipple of the mammary gland

Question 21

Give two unique facts about spiny anteaters and a duckbill platypus

Answer 21

Care for their eggs during incubation
Platypus: lays eggs in burrows, incubates them until they hatch
Spiny anteater: incubates eggs in pouch

Question 22

What does food do in a plant? What is it a form of?

Answer 22

Nourishes it until it can make food itself

It a form of starch and sugar

Question 23

What is endosperm?

Answer 23

Supplies food

Question 24

Explain the life of a flower or fruit.

Answer 24

Pollen fertilizes eggs
After fertilization, the sepal wilts and the ovary enlarges into fruit
Then it becomes immature fruit
Then mature fruit