More Life Cycles

Question 1

What are some similarities between vascular seedless plants and bryophytes?

Answer 1

Spores are the dispersal stage

Sperm must swim to the egg

Question 2

What is a homosporous spore?

Answer 2

All spores look the same and are he same size. They develop into gametophytes that look the same

Question 3

What is a heteropsoprous?

Answer 3

Produces two different types of spores, one big and one small. Develop into male and female gametophytes

Question 4

What is a sporophyll?

Answer 4

A leaf with sporangia on them

Question 5

What is the microsporangia?

Answer 5

Produces and houses microsporocytes which undergo meiosis to become 1N micro spores

Question 6

What is the megasporangia?

Answer 6

Houses and produces megasporocytes which undergo meiosis to produce 1N megaspores

Question 7

How are mega and micro spores dispersed?

Answer 7

The wind

Question 8

What is the advantage of a sporophyte dominant generation?

Answer 8

Increased size leads to increased spree producing capacity

Increased size leads to better spore dispersal

Question 9

What is feature unique to heteropsoprous plants besides the two types of sprorangia?

Answer 9

The gametophytes develop within the spore all.

The spore must contain all nutrients for gametophyte to develop. Nutrients comes from sporophyte parent

Question 10

What is the advantage of self contained spores with the gametophyte developing inside the spore wall?

Answer 10

Enhances survival of gametophyte

Question 11

What is the advantage of having different sized spores?

Answer 11

Bug spore supports development of big female gametophyte which is necessary to support development of new gametophyte
Small gametophyte only produces sperm

Question 12

What is the dominant stage in vascular seedless plants?t

Answer 12

The sporophyte

Question 13

What generation is dominant in vascular seedless plants?

Answer 13

Sporophyte (2N)

Question 14

What lifecycle does a charophytes have?

Answer 14

Haploid

Question 15

Do plant gametophytes produce gametes by meisosis?

Answer 15

No

Question 16

What is the poloidy of the various tissues of a fungus?

Answer 16

Fruiting body- dikaryotic

Mycelium and hyphae- haploid

Question 17

When did plants first evolve?

Answer 17

Paleozoic

Question 18

What is the ploidy of a basiciospores?

Answer 18

1N

Question 19

What is the ploidy of the sporangia?

Answer 19

2N

Question 20

What is the ploidy of a gymnosperm gametophyte?

Answer 20

1N

Question 21

What’s the difference between a gemtophyte a gametangium and a gamete

Answer 21

The gametangium produces the gametophyte which is 1N, and produces the 2N gametes

Question 22

What is the dispersal stage of a bryophyte?

Answer 22

The spores

Question 23

What type of multicellular organism has a ploidy of 2N and produces spores by meiosis?

Answer 23

Sporophyte

Question 24

What is the dispersal stage of a fern?

Answer 24

Spore

Question 25

What entity nourishes developing fern embryos?

Answer 25

Gametophyte

Question 26

What entity nourishes developing bryophyte embryos?

Answer 26

Gametophyte

Question 27

When hyphae of two mating types of a Basidiomycota undergo plasmogamy, the resulting hyphae will have a ploidy of what?

Answer 27

Dikaryotic

Question 28

What type of multicellular organism has a ploidy of 1N and produces gametes by mitosis?

Answer 28

Gametophyte

Question 29

A developing fern embryo is called..

Answer 29

A sporophyte

Question 30

Immediately following karyogamy, nuclei in a Basidium will have a ploidy of....

Answer 30

2N

Question 31

What is the dispersal agent in charophytes?

Answer 31

Zygote

Question 32

What stage is multicellular in a charophytes and in a byyophyte?

Answer 32

Moss- diploid | Charophytes- haploid p