biodiversity 2

Question 1

types of plankton

Answer 1

phytoplankton is photosynthetic

zooplankton eats other things

Question 2

pucoeukaryote

Answer 2

osteococcus is worlds smallest eukaryote

has one chloroplast and one mitochondrion

Question 3

dinoflagellate

Answer 3

has two flagella
heterotrophic autotrophic mixotropic
primitive nucleus 
has a chloroplast with three mebranes 
from rhodophyta but has no phycobillisomes 
has chlorophyll a and c

Question 4

diatoms

Answer 4

non motile but can float
silica shell. form chert (silica)
four chloroplast membranes
come from rhodophytes, have chlorophyll a and fucoxanthin. no phycobillisomes

Question 5

coccolithophores

Answer 5

from rhodophytes
calcium carbonate shell
brown chloroplast has chlorophyll a and c and fucoxanthin 
forms chalk and limestone 
releases dms

Question 6

what limits phytoplankton growth in high nutrient low chlorophyll regions

Answer 6

iron

Question 7

3 examples of multicellularity

Answer 7

cyanobacteria with cells that specialise into nitrogen fixing bits called heterocysts
volvox are green photosynthetic algae which form globules
dictostelium when stressed becomes multicellular

Question 8

first seaweed why did it develop

Answer 8

shallow water means more light
near surface means more co2
oxygen is ozone protection from uv