Exam 3

Question 1

What plants relied on water to move sperm to fertilize eggs

Answer 1

Ancestral Plants

Question 2

Evolved the ability to transport gametes and seed offspring via air, animals, water

Answer 2

Land Plants

Question 3

Bring together male and female gametes in dry (terrestrial) conditions

Answer 3

Seed Plants

Question 4

Gymnosperm

What are they

Answer 4

Conifers
-Cone bearing plants
-pine tree

Question 5

Angiosperm

What are they

Answer 5

Flowering plants

Question 6

What are the four major steps of forming a spore

Answer 6

-Formation of 2 spore types
- spores undergo mitosis (inside sporangia)
-Gametes undergo mitosis
-Pollination- fertilization
-Maturation of ovule into a seed

Question 7

Formation of Spores

Answer 7

-Each spore (n) type is produced in separate sporangia (2n)—> Meiosis
- Spores develop in segregated male or female gametophytes

Question 8

What do spores undergo?

Answer 8

Mitosis
-instead of being dispersed spores undergo mitosis inside the sporangia where they form the gametophyte

Question 8

What do female gametophytes (n) produce?

Answer 8

Eggs (n, Ovules)

Question 8

What do male gametophytes (n) produce?

Answer 8

Sperm (n, pollen)

Question 9

What do male gametophytes do once they are delivered near the ovum?

Answer 9

they germinate and grow through the tissue of the ovule to fertilize the egg (megaspore)

Question 10

Reproductive shoots specialized for the transfer or receipt of pollen

Answer 10

Flowers

Question 11

Flowers can have _________ carpels

Answer 11

one or more

Question 12

Where does pollen land on a flower

Answer 12

The stigma

Question 13

What grows through the style on a flower

Answer 13

A pollen tube

Question 14

What happens after the pollen tube is formed?

Answer 14

The pollen then fertilizes the ovary in the sporangia

Question 15

What surrounds the carpels

Answer 15

stamen

Question 16

Stamen is comprised of___

Answer 16

An anther on a filament

Question 17

Can not fertilize themselves

Answer 17

Self incompatible genes

Question 18

S genes

Answer 18

Self genes

Question 19

one sperm fertilizes the egg to form the 2n zygote while the other sperm fuses with the polar nuclei to form the 3n endosperm

Answer 19

Double Fertilization

Question 20

What are the 3 cells angiosperm male gametophytes have

Answer 20

2 are male gametes and the third controls the growth of the pollen tube

Question 21

What does the female angiosperm gametophytes contain

Answer 21

• 8 haploid nuclei in 7 cells

Question 22

What is occurring when 1 haploid sperm fertilizes 1 haploid egg to form a diploid zygote

Answer 22

fertilization

Question 23

How do you form a triploid endosperm

Answer 23

When the second sperm unites with the double nuclei cell in the female gametophyte

Question 24

Serves as nutrition for the growing diploid embryo

Answer 24

Triploid endosperm

Question 25

Seeds produced without fertilization | A type of Asexual reproduction

Answer 25

Apomixis

Question 26

A new plant grows out of an existing plant | Another type of asexual reproduction

Answer 26

Vegetative Reproduction