Variety of a living organism

Question 1

plants descption

Answer 1

• multicellular
• they have chloroplasts which means they can photosyntheisse
• their cells have cell walls, which are made of cellulose
• plants store carbohydtaes as sucrose or starch

Question 2

examples of plants

Answer 2

• cereals (e.g. maize)

- herbaceous legumes (e.g. peas and beans)

Question 3

animals description

Answer 3

• multicellular
• don’t have chloroplasts, can’t photosyntheisse
• don’t have cell walls
• most have nervous coordination
• can usually move around from one place to another
• they often store carbohydtaes in the form of glycogen

Question 4

animals examples

Answer 4

• mammals (e.g. humans)

- insects (e.g. houseflies and mosquitos)

Question 5

fungi

Answer 5

• some are single celled
• others have a body called mycellium, which is made up of hyphae (thread like strucures) which contain lots of nuceli
• can’t photosyntheise
• have cell walls made of chitin
• most feed by saprotophic nutriction
• they can store carbohydrates as glucogen

Question 6

saprotophic nutition

Answer 6

they secrete extracellular enzymes into the area outside their body to dissolve their food, so they can absorb the nutrients

Question 7

fingi examples

Answer 7

• yeast: this is a single- celled fungus

- mucor: this is multiceullar and have a mycelium and hyphae

Question 8

protoctis description

Answer 8

• single celled and microscopic have a nucelus
• some have chloroplasts and are similar to plant cells (e.g. chlorella)
• others are more like animal cells (e.g. Amoeba)
• AMoeba lives in pond water

Question 9

bacteria description

Answer 9

• single celled and microscopic
• dont have a nucleus
• have a circular chromosone of dna
• some can photosynthesis
• most bacteria feed of other organims (both living and dead)

have cell wall, cytoplasm, circular chromosone, cell membrane, and plasmids

Question 10

examples of bacteria

Answer 10

• lactobacillus: can be used to make milk go sour and turn into yoghurt. It is rod- shaped
• pneumococcus: spherical (round) in shape.

Question 11

Viruses

Answer 11

• are partcles rather than cells and are smaller than bacteria
• they can only reproduce inside living cells. Organisms that dpeend on other organisms to live are called parasites
• they can infect all types of living organims
• they come in manny diff shapes and sizes
• they don’t have a cellular strucutre, they have a protein coat around some genetic material (either DNA or RNA)

Question 12

example of viruses

Answer 12

• influenza virus
• HIV
• Tobacco mosiac virus: this makes leaves of tobacco plants discoloured by stopping them from producing chloroplats

Question 13

pathogens

Answer 13

organisms which cause disease

they may be fungi, protoctiis, bacteria and viruses

Question 14

protoctist patogen

Answer 14

plasmodium - causes malaria

Question 15

bacterium pathogen

Answer 15

Pneumococcus- causes pneumonia

Question 16

viruses pathogen

Answer 16

influenza virus- causes ‘flu’ and HIV (which causes aids)