Chapter 6.2

Question 0

External fertilization

Answer 0

Sperm and egg unite outside of the body of the parents

Question 1

Mating

Answer 1

Gets the gametes to the same place at the same time

Question 2

Internal fertilization

Answer 2

Sperm cells enter the body of the female to join with the egg cell inside

Question 3

Pollen

Answer 3

Male gamete in plants (=sperm)

Question 4

Ovules

Answer 4

In plants, contains the egg cells

Question 5

Anther

Answer 5

Where pollen is made and stored

Question 6

Filament

Answer 6

Stalk that supports the anther

Question 7

Stigma

Answer 7

Sticky “lip” of the pistil that captures the pollen grains

Question 8

Style

Answer 8

Stalk of the pistil which supports the stigma

Question 9

Ovary

Answer 9

Base of the pistil containing ovules

Question 10

Pistil

Answer 10

Female part of a plant which has three parts; stigma, style, ovary

Question 11

Pollen tube

Answer 11

Structure formed to get the sperm in the pollen, which is stuck to the stigma, down the style to the egg cells in the ovary

Question 12

Embryonic Development

Answer 12

Early development of an organism

Question 13

Morula

Answer 13

Ball of cells formed by the dividing zygote

Question 14

Blastula

Answer 14

Hollow ball of cells formed from the morula

Question 15

Gastrula

Answer 15

Cells of the blastula organized into 3 layers; ectoderm, mesoderm, and endoderm

Question 16

Ectoderm

Answer 16

Outside layer of the gastrula

MAKES: skin and nervous system

Question 17

Mesoderm

Answer 17

Middle layer of gastrula

MAKES: kidneys, skeleton, muscles, blood vessels, and reproductive organs

Question 18

Endoderm

Answer 18

inside layer of gastrula

MAKES: lungs, liver and lining of the digestive system

Question 19

First trimester

Answer 19

0-15 weeks
Brain and spinal chord are forming
Digits appear
ears, kidneys, lungs, liver, and muscles
Sexual differentiation almost complete

Question 20

Second trimester

Answer 20

16-25 weeks
Can feel baby moving
Eyelids open
Fetus can survive outside of the mother with specialized care

Question 21

Third trimester

Answer 21

26-40 weeks

Rapid weight gain due to the growth and accumulation of fat