CLASSIFICATION Flashcards
NAME THE two main divisions of the animal kingdom
1. INVERTEBRATES(NON_CHORDATA)
2. VERTEBRATES(CHORDATA
LIST THE three levels intowhich Invertebrates aredivided
1.cellular level-PHYLUM PORIFERA
2.tissue level-ohylum cnidaria
3. organ system level
list three division of the organ system level in Invertebrates
1.Acoelomata(No body cavity)
2.Coelomata(Body cavity)
List the phylums that belong to Acoelomata
- phylum platyhelminthes
- phylum nematoda
List the phylum that belongs to coelomata
- Phylum Annelida
- Phylum Anthropoda
- phylum mollusca
- phylum echinodermata
List the classes of vertebrates(chordata)
- class pisces
- class amphibia
- class reptiles
- class aves
- class mamalia
list the divisions of class pisces
- cartilaginous fish
- bony fish
list down some characteristics of platyhelminthes
1.they have a flattened and unsegmented body with a distinct head and tail
2.they have a simple nervous system mostly a brain and a diffuse nerve net
3.they reproduce sexually and asexually
4.they have a simple digestive sysystem with one or two openings
5.they have no specializes respiratory or circulatory system
6.they have a simple excretory system eg. flame cells
give examples of platyhelminthes
1.planarians
2.tapeworms
3.flukes
give the importance of platyhelminthes
they are important parisites of humans that causes a wide range of diseases and inections
list down the characteristics of nematodes
1.they have a long cylindricaland unsegmented body with a well defined head and tail
2.they have a well developed nervous system and a specialized sensory organs
3.they have pseidocoelom that is not completely lined by mesoderm
4.they have sexual and asexual reproductive systems
5.they have a simple digestive and excretory system
define pseudocoelom
its a fluid filled body cavity that gives support and protects internal structures
list down some examples of nematodes
1.swell dwelling nematodes
2.plant parasitic nematodes
3.animal parasitic nematodes
list down some characteristics of anelida
1.they have segmentedbody that allows for specialized segments and appendages
2.they have well developed coelom
3.they have a welldeveloped nervous system and sensory organs
4.they have a closed circulatory system and a specialised organs like gills
5.they have sexual and asexual reproductive systems
gie the examples of annelids
1.earthworms
2.leeches
3.polychaete worms
list down the characteristics of anthropods
1.they have a segmented body with jointedappendages such as legs and antennae
2.they have an exoskeleton
3.they have a well developed nervous system and specialized sensory organs such as comp[ound eyes
4.they have speciallized respiratory system like gills
5.they have specialised circulatory system and an open circulatory system
give examples of anthropods
1.insects
2.spiders
3.crustaceans
4.millipedes
give four examples of mollusks
1.snails
2.clans
3.octopus
4.squids
what are the characteristics of mollusks
1.theyhave a soft unsegmented body that is often protected by a hard shell
2.they [posses a muscular foot that is used for movement
3.they have a visceral mass that contains the interna organs
4.they have a radula,a tong -like organ covered in small teeth used for feeding
5.they have a specialised circulatory and excretory system
what are the characteristics of echinoderms
1.they are a diverse group of marine animals
2.theyhave unique water vascular system
3.they have a five part radial symmetry
give the function of the vascular system in
1.it is used for movement
2.it is used for feeding
3.it has spines or external structures
examples of echinoderms
1.sea cucumber
2.star fish
give some examples of ovoviviparous organisms
1.sharks
2.pit vipers
3.seahorse
4.praying mantis
5.salamanders
6.kangaroos
what are viviparous organisms
they are organisms in which fertilization and embryo development occur inside them
give some examples of viviparous organisms
1.humans
2.cats
3.dogs
4.primates
what are oviparous animals
they are animals that reproduce by laying eggs.both fertilisation andembryo development occurs externally
give examples of oviparous animals
1.frogs
2.fish
3.snakes
what are ovoviviparous animals
they are animals in which there is internal fertilisation and the young are born alive but there is no placenta connection between the mother and the unborn
write short note on oviparity in fishes
.fish lay eggs in water
.they female fish lay eggs in batches
.a single batch may contain thousands of eggs collectively called spawns
.the eggs develop and hatch on their own without any further parental care.
explain oviparity in amphibians
1.amphibians like frogs lay egg in water
2.amphibianseggs have no shells
3.they lay eggs in clutches
4.lateron the mature embryo comes out of the egg under propper conditions
5.after the eggs are released from the body they take up water and get bigger.
explain oviparirity in reptiles
1.reptiles makes holes in the ground and lay eggs in them
2.after laying the eggs the mother leaves and comes back to nurture the babies
3.the eggs have shells but the shells are leathery and elastic like
4.the eggs get warmth and light from the sun and when the embryo matures it breaks the egg shells and comes out
explain oviparity in birds
1.birds build their nests and then lay eggs in them
2.they sit on the eggs to keep them warm
3.parents take care of their newly hatched chicks feed them and stay with them until they mature and start flying
write short notes on viviparous animals
1.theyhave body hair and have mammmary glands
2.the babies feed on their mothers milk
3.they have developed brains and external ears
4.babies develop inside their mothers
