Algae MCQs : This section focuses on the "Algae". These Multiple Choice Questions (MCQs) should be practiced to improve the Algae skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.
Question 1
Which among the following are incorrect about volvox?
A. Volvox grow in colonies
B. The structure that connects them are called cytoplasmic bridges
C. Daughter colonies of volvox grow inside the parent colony
D. They are immobile due to absence of flagellum
Question 2
The inner cell wall in spirogyra is made up of ________
A. Pectin
B. Cellulose
C. Chitin
D. Lipids
Question 3
Which among the following is incorrect?
A. Algae help in increasing oxygen levels in the environment
B. Chlorella and Spirullina are multi-cellular algae that are rich proteins and are used as food supplements for space travelers
C. Chlorophyceae comprise algae that contain chlorophyll a and chlorophyll b
D. Chlorophyceae store food as proteins, starch or as oil droplets
Question 4
Which of the following is not the basis for sub-classification in plants?
A. Well differentiable structure
B. Presence of seeds
C. Structure of branches
D. Seed coat
Question 5
Characteristics used to place algae into divisions include all of the following except
A. form of storage material
B. flagella number and location
C. accessor pigments used in photosynthesis
D. All of the above
Question 6
A leaf like photosynthetic organ in Phaecophyceae is called as ________
A. Frond
B. Stipe
C. Holdfast
D. Algin
Question 7
The algae Chlamydomonas demonstrates a complex life cycle that switches between haploid and diploid forms. This life cycle is called
A. the sexual-asexual exchange
B. the transposition cycle
C. an alternation of generations
D. algal transformation
Question 8
Which of the following is correct?
A. All members of photolithotrophic autotrophs are also members of algae, but not all members of algae are members of photolithotrophic autotrophs
B. All members of algae are also members of photolithotrophic autotrophs, but not all members of photolithotrophic autotrophs are members of algae
C. All members of photolithotrophic autotrophs are members of algae, and all members of algae are members of photolithotrophic autotrophs
D. No member of photolithotrophic autotrophs is a member of algae
Question 9
Thallophyta follows cryptogamae.
A. True
B. False
Question 10
Which of the following algal divisions is characterized by possession of chlorophylls A and B, paramylon as the energy storage material, and the presence of a pellical instead of a cell wall?
A. Chlorophyta
B. Euglenophyta
C. Pyrrophyta
D. Chrysophyta
Question 11
Plants other than that of Thallophyta are classified based on the presence or absence of vascular tissues as Bryophyta and others.
A. True
B. False
Question 12
Chlamydomonas and Volvox are similar because
A. they both are motile
B. they are members of the Chlorophyta
C. Both A and B
D. None of these
Question 13
Which of the following modes are used by spirogyra to reproduce?
A. Fragmentation
B. Multiple fission
C. Spore formation
D. Binary fission
Question 14
Which of the following algal divisions is characterized by possession of chlorophylls A and B, starch as the energy storage material, cellulosic cell walls and live in freshwater and marine habitats?
A. Chlorophyta
B. Chrysophyta
C. Phaeophyta
D. Pyrrophyta
Question 15
Number of flagella produced by motile cells in
A. members of the phaeophyta is greater than members of the Oomycota
B. members of the Oomycota is greater than members of the Phaeophyta
C. members of the Phaeophyta is approximately equal to members of the Oomycota
D. none of the above
Question 16
Which algal division is divided up into three main groups consisting of the golden-brown algae, the yellow-green algae and the diatoms?
A. Chlorophyta
B. Chrysophyta
C. Phaeophyta
D. Pyrrophyta
Question 17
Chlamyodomonas reinhardtii is a green _________ algae.
A. unicellular
B. di-cellular
C. multicellular
D. either unicellular or di-cellular
Question 18
Algae is a nonvalid taxinomic term that refers to
A. eukaryotic organisms that have chlorophyll a and produce O2
B. well developed cellular structure including a conducting system
C. Both (a) and (b)
D. none of the above
Question 19
The kelps are algae found in
A. chlorophyta
B. chrysophyta
C. phaeophyta
D. pyrrophyta
Question 20
Number of flagella produced by motile cells in
A. members of the phaeophyta is greater than members of the Oomycota
B. members of the Oomycota is greater than members of the Phaeophyta
C. members of the Phaeophyta is approximately equal to members of the Oomycota
D. None of these
Question 21
The number of flagella produced by motile cells in
A. members of the Rhodophyta is greater than members of the Phaeophyta
B. members of the Phaeophyta is greater than members of the Rhodophyta
C. members of the Rhodophyta is exactly or approximately equal to members of the Phaeophyta
D. None of these
Question 22
Which among the following is an incorrect statement?
A. Multiple fission is a process through which many individuals are produced by repeated nuclear division
B. Multiple fission takes place under suitable conditions
C. During multiple fission, an outer layer called cyst is formed
D. Nucleus divides repeatedly and new individuals are formed inside the cyst after which cyst breaks to release new individuals
Question 23
Which among the following is an incorrect statement?
A. Chlamydomanas is an example of unicellular algae
B. Chlamydomanas have flagella to promote their movement
C. Ulothrea is a unicellular autotrophic algal
D. Spirogyra attains its name because of spiral like arrangement of chloroplasts
Question 24
Reproduction in humans is an example of _______
A. Isogamous
B. Anisogamous
C. Oogamous
D. Sapiogamous
Question 25
Which of the following best describes the algae known as diatoms?
A. Cells have intricate shells of silicon dioxide with two halves
B. Cells are encased in rigid walls composed of cellulose coated with silicon
C. Cells have flagella and a light-detecting eye spot
D. Cells contain carotenoid pigments as well as chlorophyll A and B
Question 26
Which algal division never produces motile, flagellated cells among any of its members?
A. Chlorophyta
B. Chrysophyta
C. Phaeophyta
D. Rhodophyta
Question 27
All algae possess
A. chlorophytanuclei
B. chloroplasts
C. Both A and B
D. None of these
Question 28
Gelidium and Gracilaria is used in the formation of _______
A. Agar
B. Vinegar
C. Yoghurt
D. Beer
Question 29
Frustules made of silica are characteristic of
A. euglenoids
B. diatoms
C. desmids
D. seaweeds
Question 30
Starch is an energy storage material characteristic of
A. Chlorophyta
B. Chrysophyta
C. Phaeophyta
D. Rhodophyta
Question 31
Chlamydomonas and Volvox are similar because
A. they both are motile
B. they are members of the Chlorophyta
C. Both (a) and (b)
D. none of these
Question 32
During unfavourable conditions, the outer layer that is formed in chlamydomonas is called as ______
A. Cyst
B. Nuclear membrane
C. Cell wall
D. Cellular membrane
Question 33
The number of members of the division Phaeophyta that live in freshwater habitats
A. is greater than the number of members of the division Chloro-phyta that live in freshwater habitats
B. is lesser than the number of members of the division Chlorophyta that live in freshwater habitats
C. is equal to the number of members of the division Chlorophyta that live in freshwater habitats
D. none of the above
Question 34
The number of members of the division Phaeophyta that live in freshwater habitats
A. is greater than the number of members of the division Chloro-phyta that live in freshwater habitats
B. is lesser than the number of members of the division Chlorophyta that live in freshwater habitats
C. is equal to the number of members of the division Chlorophyta that live in freshwater habitats
D. None of these
Question 35
Which among the following is incorrect about Ulothrea?
A. Ulothrea is a multicellular filamentous algae
B. Ulothrea contains three different sets of cells i.e. apical, basal and lateral cells
C. Apical cells are rounded at one end whereas basal cells are elongated at one end
D. Every cell contains chlorophyll in them
Question 36
The color in Phaecophyceae depends on the amount of xanthophyll and fucoxanthin.
A. True
B. False
Question 37
Zooxanthellae are algal symbiont that live within coral reef animals. These algae belong to
A. chlorophyta
B. chrysophyta
C. pyrrophyta
D. rhodophyta
Question 38
The number of flagella produced by motile cells in
A. members of the Rhodophyta is greater than members of the Phaeophyta
B. members of the Phaeophyta is greater than members of the Rhodophyta
C. members of the Rhodophyta is exactly or approximately equal to members of the Phaeophyta
D. none of the above
Question 39
Rhodophyceae is also called as red algae because of the presence of a pigment called r-phycoerythrin.
A. True
B. False
Question 40
The word “Thallophyta” means ________
A. plants that don’t have well-differentiable structure
B. plants that have large leaves
C. plants that grow in colonies
D. plants that are filamentous
Question 41
Bioluminescence is a phenomenon associated with
A. chrysophyta
B. phaeophyta
C. pyrrophyta
D. chlorophyta
Question 42
Agar, which is the solidifying agent in many bacterial culture media, is part of the cell wall of
A. chlorophyta
B. chrysophyta
C. pyrrophyta
D. rhodophyta
Question 43
Algae is a nonvalid taxinomic term that refers to
A. eukaryotic organisms that have chlorophyll a and produce O2
B. well developed cellular structure including a conducting system
C. Both A and B
D. None of these
Question 44
Laminarin is an energy storage material characteristic of
A. chlorophyta
B. chrysophyta
C. phaeophyta
D. pyrrophyta
Question 45
Which among the following is an incorrect statement?
A. Most of the algae reproduce using spore formation
B. Asexual spores are called as zoo-spores and the reproductive part in algae is called zoosporangium
C. Under favourable conditions, these organisms germinate to form new organism
D. Zoo-spores are non-motile and flagellated
Question 46
Algae are classified into 6 groups, technically known as
A. categories
B. divisions
C. genera
D. domains
Question 47
Which among the following are incorrect about Chladophora?
A. Chladophora is a filamentous branched algal
B. Chladophora is also called river weed in some areas
C. It is edible and are used in salads
D. There are many different varieties of chladophora that are difficult to be classified
Question 48
The __________ is the vegetative body of algae.
A. mycelium
B. plasmodium
C. pseudoplasmodium
D. thallus
Question 49
Algae are found in all of the following places except
A. oceans
B. soils
C. lakes and streams
D. associates with fungi
Question 50
Food is stored in Phaecophyceae as ___________
A. Starch
B. Laminol
C. Glucose
D. Fructose
Question 51
All algae possess
A. nuclei
B. chloroplasts
C. Both (a) and (b)
D. none of these
Question 52
The storage bodies present in chloroplasts of chlorophyceae are called as ________
A. Pyrenoids
B. Carragen
C. Stroma
D. Alga
Question 53
Chrysolaminarin is an energy storage material characteristic of
A. chlorophyta
B. chrysophyta
C. phaeophyta
D. rhodophyta