Brainscape's Knowledge GenomeTM

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


See full index

IB Biology HL > Topic 5.3 Classification > Flashcards

Topic 5.3 Classification Flashcards

1
Q

The binomial system of nomenclature

A

formal system by which all living species are classified

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

Why is the binomial system of nomenclature valuable?

A

It allows for the identification and comparison of organisms based on recognized characteristics

It allows all organisms to be named according to a globally recognized scheme

It can show how closely related organisms are, allowing for the prediction of evolutionary links

It makes it easier to collect, sort and group information about organisms

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

Binomial system of nomenclature two parts:

A

Genus is written first and is capitalized (Homo)

Species follows and is written in lower case (sapiens)

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

Eukarya

A

eukaryotic organisms that contain a membrane-bound nucleus

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

Archaea

A

prokaryotic cells lacking a nucleus and consist of the extremophiles

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

Eubacteria

A

prokaryotic cells lacking a nucleus and consist of the common pathogenic forms

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

Hierarchy of Taxa

A 
Katy - K - Kingdom
Perry - P - Phylum
Comes - C - Class
Over - O - Order
For - F - Family
Grape - G - Genus
Soda - S - Species
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Classification examples Animal

A 
Kingdom - Animalia
Phylum - Chordata
Class - Mammalia
Order - Primate
Family - Hominidae
Genus - Homo
Soda - sapiens
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Classification examples Plant

A 
Kingdom - Plantae
Phylum - Angiospermophyta
Class - Eudicotidae
Order - Ranunculales
Family - Ranunculacae
Genus - Ranunculus
Soda - acris
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Plant Phyla - Bryophyta features

A
  • Has no vascularisation (i.e. lacks xylem and phloem)
  • Has no ‘true’ leaves, roots or stems (are anchored by a root-like structure called a rhizoid)
  • Reproduce by releasing spores from sporangia (reproductive stalks)
  • Examples include mosses and liverworts
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Plant Phyla - Filicinophyta

A
  • Has vascularisation (i.e xylem and phloem)
  • Have leaves, roots and stems (leaves are pinnate – consisting of large fronds divided into leaflets)
  • Reproduce by releasing spores from clusters called sori on the underside of the leaves
  • Examples include ferns
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Plant Phyla - Coniferophyta

A
  • Has vascularisation
  • Have leaves, roots and stems (stems are woody and leaves are waxy and needle-like)
  • Reproduce by non-motile gametes (seeds) which are found in cones
  • Examples include pine trees and conifers
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Plant Phyla - Angiospermophyta

A
  • Has vascularisation
  • Have leaves, roots and stems (individual species may be highly variable in structure)
  • Reproduce by seeds produced in ovules within flowers (seeds may develop in fruits)
  • Examples include all flowering plants and grasses
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Animal Phyla - Porifera

A
  • No body symmetry (asymmetrical)
  • No mouth or anus (have pores to facilitate the circulation of material)
  • May have silica or calcium carbonate based spicules for structural support
  • Examples include sea sponges
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Animal Phyla - Cnidaria

A
  • Have radial symmetry
  • Have a mouth but no anus (single entrance body cavity)
  • May have tentacles with stinging cells for capturing and disabling prey
  • Examples include jellyfish, sea anemones and coral
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Animal Phyla - Platyhelmintha

A
  • Have bilateral symmetry
  • Have a mouth but no anus (single entrance body cavity)
  • Have a flattened body shape to increase SA:Vol ratio and may be parasitic
  • Examples include tapeworms and planaria
17
Q

Animal Phyla - Annelida

A
  • Have bilateral symmetry
  • Have a separate mouth and anus
  • Body composed of ringed segments with specialisation of segments
  • Examples include earthworms and leeches
18
Q

Animal Phyla - Mollusca

A
  • Have bilaterial symmetry
  • Have a separate mouth and anus
  • Body composed of a visceral mass, a muscular foot and a mantle (may produce shell)
  • Examples include snails, slugs, octopi, squid and bivalves (e.g. clams)
19
Q

Animal Phyla - Arthropoda

A
  • Have bilateral symmetry
  • Have a separate mouth and anus
  • Have jointed body sections / appendages and have a hard exoskeleton (chitin)
  • Examples include insects, crustaceans, spiders, scorpions and centipedes
20
Q

Animal Phyla - Chordata

A
  • Have bilateral symmetry
  • Have a separate mouth and anus
  • Have a notochord and a hollow, dorsal nerve tube for at least some period of their life cycle
  • Examples include mammals, birds, reptiles, amphibians and fish (also invertebrate sea squirts)
21
Q

Vertebrate Classes

A 
Fish
Amphibian
Reptiles
Birds
Mammals

IB Biology HL (32 decks)

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