Kingdom Protista

Question 1

unicellular eukaryotes are placed under which kingdom

Answer 1

protista

Question 2

which kingdom does not have well defined boundaries

Answer 2

protista

Question 3

habitat of protista

Answer 3

aquatic

Question 4

do all protists have flagella or cilia

Answer 4

no
some do

Question 5

how do protists reproduce

Answer 5

sexually as well as asexually

Question 6

how do protists reproduce sexually

Answer 6

by a process which involves cell fusion and zygote formation

Question 7

chrysophytes include

Answer 7

diatoms and golden algae

Question 8

golden algae are also called

Answer 8

desmids

Question 9

what are diatoms

Answer 9

photosynthetic algae

Question 10

habitat of chrysophytes

Answer 10

fresh water and marine

Question 11

those chrysophytes which float passively in water are called

Answer 11

planktons

Question 12

structure of cell wall in diatoms

Answer 12

two thin overlapping shells like lid and base of a soap box
contains silica, hence indestructable

Question 13

cell wall deposits of diatoms are called

Answer 13

diatomaceous earth

Question 14

being gritty in nature, diatoms are used for

Answer 14

polishing, filtration of oils and syrups

Question 15

cheief producers of the ocean

Answer 15

diatoms

Question 16

habitat of dinoflagellates

Answer 16

marine

Question 17

mode of nutrition of dinoflagellates

Answer 17

photosynthetic

Question 18

colour of dinoflagellates

Answer 18

yellow
green
brown
blue
red
(depends on their main pigment)

Question 19

structure of cell wall of dinoflagellates

Answer 19

has still cellulosic plates on outer surface

Question 20

number of flagella in dinoflagellates

Answer 20

two
one is longitudinal
other is transverse which lies in a furrow between wall plates

Question 21

example of a red dinoflagellate

Answer 21

Gonyaulax

Question 22

what are red tides

Answer 22

red dinoflagellates multiply so rapidly, they make the sea appear red
toxins are released which may kill other marine animals

Question 23

euglenoids habitat

Answer 23

fresh water organisms (stagnant water)

Question 24

what do euglenoids have instead of cell wall

Answer 24

a protein rich layer called pellicle which makes their body flexible

Question 25

do euglenoids have flagella

Answer 25

a long and a short one

Question 26

mode of nutrition of euglena

Answer 26

photosynthetic in presence of sunlight heterotropic when deprived on sunlight by preying on smaller organisms

Question 27

what is identical in euglenoids and higher plants

Answer 27

pigments

Question 28

example of a euglenoid

Answer 28

euglena viridus

Question 29

mode of nutrition of slime moulds

Answer 29

saprophytic

Question 30

where are slime moulds usually found

Answer 30

among twigs and leaves

Question 31

how do slime moulds move

Answer 31

their body moves along decaying twigs and leaves engulfing organic material

Question 32

under suitable conditions, slime moulds form an aggregation called ___________ which may grow and spread over several feet

Answer 32

plasmodium

Question 33

in slime mould, during unfavourable conditions, plasmodium differentiates and forms

Answer 33

fruiting bodies which bear spores at their tips

Question 34

do these spores of slime moulds have true cell wall

Answer 34

yes

Question 35

do spores of slime mould survive in adverse conditions

Answer 35

yes, they are extremely resistant and survive for many years

Question 36

spores of slime moulds are dispersed by

Answer 36

air currents

Question 37

mode of nutrition of protozoans

Answer 37

heterotrophs ( predators / parasites )

Question 38

which protists are believed to be primitive relatives of animals

Answer 38

protozoans

Question 39

four major groups of protozoans

Answer 39

amoeboid flagellated ciliated sporozoans

Question 40

where do amoeboid protozoans live

Answer 40

fresh water, sea water, moist soil

Question 41

how do amoeboid protozoans move and capture their prey

Answer 41

by putting out pseudopodia as in amoeba

Question 42

what do marine forms of amoeboid protozoans have

Answer 42

silica shells on their surface

Question 43

some of the marine forms of amoeboid protozoans such as ____________ are parasites

Answer 43

entamoeba

Question 44

are flagellated protozoans free-living or parasitic

Answer 44

either

Question 45

parasitic forms of flagellated protozoans cause diseases such as

Answer 45

sleeping sickness

Question 46

which flagellated protozoan causes sleeping sickness

Answer 46

trypanosoma

Question 47

habitat of ciliated protozoans

Answer 47

aquatic

Question 48

cavity of ciliated protozoans which opens to outside of the cell is called

Answer 48

gullet

Question 49

example of a ciliated protozoans

Answer 49

paramoecium

Question 50

sporozoans include which organisms

Answer 50

that have an infectious spore-like stage in their life cycle

Question 51

most notorious sporozoan

Answer 51

plasmodium (malarial parasite)