Algae Test 2

Total Questions:50 Total Time: 75 Min

Remaining:

 

Questions 1 of 50

Question:In the life cycle of which group flagellated cells are not formed

Answers Choices:

Chlorophyceae

Phaeophyceae

Rhodophyceae

Both (2) and (3)

Questions 2 of 50

Question:Coenobium means

Answers Choices:

A hollow spherical colony

A group of filaments

Palmelloid form

None of the above

Questions 3 of 50

Question:Which one of the following is not a accessory pigment

Answers Choices:

Chlorophyll'a'

Chlorophyll ‘e'

Phycocyanin

Xanthophyll

Questions 4 of 50

Question:In physiological anisogamy

Answers Choices:

Gametes are morphologically similar but physiologically dissimilar

Gametes are morphologically dissimilar but physiologicaly similar

Gametes are morphologically and physiologically similar

None of the above

Questions 5 of 50

Question:Fusion of mature individuals which directly act as gametes, is called

Answers Choices:

Isogamy

Anisogamy

Hologamy

Autogamy

Questions 6 of 50

Question:A motile flagellated asexual cell is called

Answers Choices:

Sperm

Zoospore

Oospore

Androspore

Questions 7 of 50

Question:Which among the following do you consider as the best evidence to show that two species of algae are closely related

Answers Choices:

They both respire and release \(C{O_2}\)

They both are found in the same habitat

They both reproduce asexually

They both have same type of pigments

Questions 8 of 50

Question:Which of the following is not correctly matched

Answers Choices:

Chlamydomonas - Unicellular flagellated

Laminaria - Flattened leaf like thallus

Chlorella - Unicellular non-flagellated

Spirogyra - Filamentous structure

Volvox - Colonial form non-flagellated

Questions 9 of 50

Question:Algae are important, we should study algae because

Answers Choices:

They are good organisms to experiment with

They can be grown in large tank cultures

They may form important constituent of human food (diet) in future

They produce oxygen and organic acids

Questions 10 of 50

Question:The simplest green plants are

Answers Choices:

Yeast

Bacteria

Algae

Lactobacillus

Questions 11 of 50

Question:Thermal algae are forms which grow and survive

Answers Choices:

In tropical regions where the temperature range is high

In hot water springs where the temperature remains around \({\rm{7}}0^\circ {\rm{C}}\)

On the huge rocks exposed to bright sunlight

In deserts where the temperature in summer remains around \({\rm{7}}0^\circ {\rm{C}}\)

Questions 12 of 50

Question:Pyrenoids are characteristically found in the chloroplast of

Answers Choices:

Fungi

Algae

Pteridophytes

Angiosperms

Questions 13 of 50

Question:The giant algae or sea weeds belong to class

Answers Choices:

Phaeophyceae

Rhodophyceae

Chlorophyceae

Xanthophyceae

Questions 14 of 50

Question:Most important alga in research centres is

Answers Choices:

Mycoplasma

Spirogyra

Chlorella

Blue-green algae

Questions 15 of 50

Question:Amongst plants which one of the following group has been classified on the basis of pigments

Answers Choices:

Algae

Fungi

Bryophyta

Pteridophyta

Questions 16 of 50

Question:Algae differ from Bryophyta in possessing

Answers Choices:

Naked sex organs

Sex organs covered with sterile covering

Chlorphylls a and e

Aerobic respiration

Questions 17 of 50

Question:Plants manufacturing their own food are called

Answers Choices:

Epiphytes

Parasites

Saprophytes

Autotrophs

Questions 18 of 50

Question:Sex organs of thallophytes are generally

Answers Choices:

Unicellular

Multicellular surrounded by a sterile jacket

Multicellular but not surrounded by any jacket

Unicellular with a sterile jacket

Questions 19 of 50

Question:Thallophytes are

Answers Choices:

Always autotrophic

Always heterotrophic

Both (1) and (2)

None of the above

Questions 20 of 50

Question:Most primitive members of the plant kingdom are

Answers Choices:

Thallophytes

Bryophytes

Pteridophytes

Gymnosperms

Questions 21 of 50

Question:Meiotic division in zygote takes place in

Answers Choices:

Thallophyta

Angiosperms

Gymnosperms

Pteridophyta

Questions 22 of 50

Question:Which of the following form contain algae

Answers Choices:

Equisetum

Selaginella

Marsilea

None of these

Questions 23 of 50

Question:Alginic acid is obtained from

Answers Choices:

Red algae

Green algae

Diatoms

Brown algae

Questions 24 of 50

Question:The pigment phycoerythrin is characteristic of

Answers Choices:

Green algae

Brown algae

Red algae

Blue green algae

Questions 25 of 50

Question:Which of the following is a flagellated algae

Answers Choices:

Chlamydomonas

Ulothrix

Spirogyra

Acetabularia

Questions 26 of 50

Question:Which of the following is a nitrogen fixer

Answers Choices:

Ulothrix

Anabaena

illva

Hydrodictyon

Questions 27 of 50

Question:In Spirogyra meiosis occurs in

Answers Choices:

The developing zygospore

During conjugation process

During vegetative reproduction

During gamete formation

Questions 28 of 50

Question:In Spirogyra during the germination of zygospore how many haploid nuclei take part

Answers Choices:

One

Two

Three

All four

Questions 29 of 50

Question:Sexual reproduction in which cells of two different Spirogyra filaments conjugate is known as

Answers Choices:

Lateral conjugation

Scalariform conjugation

Parthenocarpy

Azygospory

Questions 30 of 50

Question:The product of conjugation of Spirogyra is called

Answers Choices:

Zoospore

Akinete

Chlamydospore

Zygospore

Questions 31 of 50

Question:Spirogyra differs from moss protonema in having

Answers Choices:

Pyrenoid

Branched filament

Discoid chloroplast

Rhizoidal branches

Questions 32 of 50

Question:The sexual reproduction in Spirogyra is

Answers Choices:

Oogamous

Anisogamous

Cleistogamous

None of the above

Questions 33 of 50

Question:Asexual reproduction in Spirogyra

Answers Choices:

Has not been recorded

Takes place by formation of zoospores

Takes place by formation of aplanospores

Takes place by formation of hypnospores

Questions 34 of 50

Question:Which of the following produces non-motile gametes

Answers Choices:

Ulothrix

Cladophora

Spirogyra

Anabaena

Questions 35 of 50

Question:Contraction of protoplast in Spirogyra takes place

Answers Choices:

Just before formation of zoospores

Before the formation of gametes

Before the fusion of gametes

During germination of zygospores

Questions 36 of 50

Question:Spirogyra differs from Mucor in having

Answers Choices:

Uninucleate gametangia

Multicellular gametes

Anisogamete

Sexual reproduction

Questions 37 of 50

Question:Which type of sexual reproduction is found in Spirogyra

Answers Choices:

Conjugation

Binary fission

Fragmentation

Spores formation

Questions 38 of 50

Question:The chloroplast in Spirogyra is

Answers Choices:

Spiral band shaped

Cup shaped

Star shaped

Girdle shaped

Questions 39 of 50

Question:In Ulothrix meiosis (Reduction division) occurs in

Answers Choices:

Gamete

Zygospore

Zoospore

Thallus

Questions 40 of 50

Question:Basal cell of Ulothrix is

Answers Choices:

Extra green

Colourless

Full of reserve food

Without a nucleus

Questions 41 of 50

Question:Number of flagella present in the gametes of Ulothrix is

Answers Choices:

Four

Three

One

Two

Questions 42 of 50

Question:Basal cell of Ulothrix is

Answers Choices:

Antheridium

Meristematic

Holdfast

Zoogonidium

Questions 43 of 50

Question:Presence of basal rhizoidal cell in Ulothrix is an example of

Answers Choices:

Dead cell

Vestigial cell

Accessory cell

Beginning of division of labour

Questions 44 of 50

Question:In Ulothrix, zygote is

Answers Choices:

Nonflagellate

Uniflagellate

Biflagellate

Tetraflagellate

Questions 45 of 50

Question:Sexual reproduction in Spirogyra can be described as

Answers Choices:

Morphological anisogamy and physiological isogamy

Morphological as well as physiological isogamy

Morphological as well as physiological anisogamy

Morphological isogamy and physiological anisogamy

Questions 46 of 50

Question:Scalariform conjugation occurs in

Answers Choices:

Ulothrix

Oedogonium

Spirogyra

Chlamydomonas

Questions 47 of 50

Question:On germination each zygospore of Spirogyra gives rise to

Answers Choices:

Four plants

Three plants

Two plants

One plant

Questions 48 of 50

Question:Zygospore of Spirogyra produces

Answers Choices:

2 zoospores

4 zoospores

2- 4 zoospores

None of the above

Questions 49 of 50

Question:Sexual reproduction in Spirogyra involves fusion of

Answers Choices:

Two similar motile gametes

Two similar non-motile gametes but physiological dissimilar

One motile and one non-motile gametes

Two dissimilar motile gametes

Questions 50 of 50

Question:Spirogyra increases its body length by the division of

Answers Choices:

The apical cell

The basal cell

Every cell of the body

Accumulation of food in his body