Chapter 3

Question 1

Explain why virus is classified as non-living

Answer 1

There are 7chracteristics of living organisms
Virus only reproduce by taking host of another cell and making copies
Viruses can’t move,resperat,sensitivity,grow,excrete,nutriton
Conclusion:they are non-living

Question 2

Explain Structure of virus

Answer 2

Non cellular
Ultra microscopic only visible in electron microscope
Consist of strand of nucleic acid/DNA RNA
Found in core
Core wrapped in protein coat (capsid)
Core consist of identical subunits (capsomere)
Cold-no external evelope
HIV-external envelope

Question 3

Kingdom animalia

Answer 3

Multicellular 
Eucariotic
Hetrotrophic
No cell walls
Muscles/nerves

Question 4

Kingdom plantae

Answer 4

Multicellular
Eukaryotic
Cell wall with cellulose
Autotrophic

Question 5

Phylum chordata

Answer 5

Vertebrates with vertable collum

Have post anul tale

Question 6

Class osteinchtheys

Answer 6

Fish with bony skeleton
Gills covered with opercullum
Fins suported by bony rays
Lateral line

Question 7

Class amphibia

Answer 7

Smooth skin

Gelly like eggs in water then tadpole then gills then lungs

Question 8

Class reptilia

Answer 8

Touhg dry leathery skin
Eggs on land though leatery shell
Gaseous exchange through lungs

Question 9

Class aves

Answer 9

Skin covered with feathers
Legs covered in scales
Have beaks

Question 10

Class mamalia

Answer 10

Skin with fur/hair
Mamory glands
External earflaps

Question 11

Phylum arthropoda

Answer 11

Jointed legs

Segmented bodies

Question 12

Phylum insecta

Answer 12

3pair legs
1pair of compound eyes
1pair of antenae
Tracheal system

Question 13

Phylum crusteces

Answer 13

2section body
5pair of legs
2pair of antenae
Compound eyes on stilts

Question 14

Phylum arachnida

Answer 14

4pair legs
8 simple eyes
Book lungs
Some produce silk threads

Question 15

Phylum myriapoda

Answer 15

2parted bodies
Many jointed legs
1pair antenae

Question 16

Phylum amilida

Answer 16

Segmented worms
Metameric segmentations
Move with bristles(chatae)
Non-chitonous cuticle

Question 17

Phylum nemetoa

Answer 17

Non segmented worms
Pointed at both ends
Smooth cuticle

Question 18

Phylum mollusca

Answer 18

Gills/lungs in mantle cavity
Tongue like radula
Unsegmented body
Some has no shell

Question 19

Phylum cnidaria

Answer 19

Simple animals,mostley marine,some aquatic
Sac like body cavity
Single opening

Question 20

Phylum flowering plants

Answer 20

Multicellular
Eucaruotic
Primarily terestrial
Leaves have pores(stomata)

Question 21

Class monocots

Answer 21

Seed: 1lobe
Leaves:narrow strap shaped
Veins:parallel 
Roots:adventitious 
Flowers:multiples of 3