Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Diversity Of Life > Life Cycles > Flashcards

Life Cycles Flashcards

0
Q

What are the three types of animal life cycles?

A

Direct development. Zygote to juvenile to adult
Indirect development. Zygote to larva to adult.
Biphasic. Shift between asexual and sexual lifestyle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
1
Q

What type of life cycle do all sexually reproducing organisms have?

A

Diploid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are the unifying features of a fungi?

A

All chemoheterotrophs

Cell wall made of chiton

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are hyphae and what are the two types?

A

Cellular filaments with nuclei. Coenocitic and septate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the mycelium?

A

Feeding network of a fungi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are the advantages of a filamentous body structure?

A

Increased surface area leads to increased absorption
Fast growth rate
Allows fungi to penetrate small spaces

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What poloidy are fungal life cycles?

A

Haploid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What serves as the gametes in fungal reproduction?

A

The nucleus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the difference between a spore and a gamete?

A

Spores are capable of developing directly into a new individual while gametes must fuse with another cell before becoming a zygote and developing into a new individual.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What process are asexual spores produced by?

A

Mitosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What process are sexual spores produced by?

A

Meiosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What type of hyphae do Basidiomycota and ascomycota have?

A

Septate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What kind of hyphae does zygomycota have?

A

Coenocitic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What are the sexual spores in Basidiomycota and ascomycota?

A

Ascomycota- ascospores

Basidiomycota- basiciospores

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What are the asexual spores in an ascomycota?

A

Conidia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What poloidy are the ascocarp and Basidiocarp?

A

Dikaryotic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What benefits do the ascomycota get in lichen?

A

Sugars and fixed nitrogen from the photosynthetic cell

17
Q

What benefits do the photosynthetic cells get in lichen?

A

They are protected fro, UV Rays and herbivores, they have an increased level of stability and are rooted in one location where there is water.

18
Q

How do lichen reproduce?

A

They can reproduce independently:
Fungi sexually and photosynthetic cells asexually
Or they can reproduce together through fragmentation or soredia

19
Q

When did the kingdom plantae evolve?

A

475 to 500 Million years ago

20
Q

What is the closest living relative to the kingdom plantae?

A

Charophytes

21
Q

What type of lifestyle do charophytes have?

A

Haploid

22
Q

What are the defining features of a plant?

A 
Alternation of generations 
Multicellular sporangia and gametangia 
Zygote and embryo retained and nourished by maternal tissue
Thick walled non flagellated spores 
Water resistant waxy cuticle
23
Q

What is the dominant lifecycle of plants?

A

2N generation

24
Q

When did flowering plants originate?

A

About 140 million years ago

25
Q

What is pollen

A

Male genetic component covered by a resistant covering

26
Q

What does a seed contain

A

A. Embryo and food sourc e

27
Q

What is the archegonia?

A

Produces and houses the egg. One egg per archegonium

28
Q

What is the antheridia

A

Houses and produces the sperm. Many sperm per antheridium

29
Q

What are the generation to generation stages in the life of a sexually reproducing organism?

A

Meiosis
Fertilization
Mitosis

30
Q

What order are the generation to generation life stages in a diploid organism?

A

Meiosis
Fertilization
Mitosis

31
Q

What are the generation to generation stages in a haploid life cycle?

A

Mitosis
Mitosis fertilization
Meiosis

32
Q

What ploidy is the archegonium in moss?

A

Haploid

33
Q

What ploidy is the zygote in a moss and ferns?

A

Diploid

34
Q

What does the integument become?

A

The seed coat

35
Q

What is the dispersal stage in gymnosperms?

A

Seeds

36
Q

What does the megasporangium become in a seed?

A

Food supply

37
Q

What does the megaspores become in a seed?

A

The embryo

38
Q

Describe the male side of fertilization in gymnosperms

A

Many microsporocytes-meiosis- many microspores-mitosis- many 4’celled male gametophytes

39
Q

Summarize the events of fertilization in a gymnosperm from the female perspective

A

One 2N megasporangium-meiosis- 4 1N megaspores (3 degenerate) single surviving megaspores-mitosis- multicellular female gametophyte-mitosis- 2 to 3 archegonia with female gametophyte, each with one egg (1N)

Diversity Of Life (12 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions