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Algae MCQ Questions & Answers

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

The inner cell wall in spirogyra is made up of ________

A. Pectin
B. Cellulose
C. Chitin
D. Lipids

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Question 2

Laminarin is an energy storage material characteristic of

A. chlorophyta
B. chrysophyta
C. phaeophyta
D. pyrrophyta

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Question 3

Starch is an energy storage material characteristic of

A. Chlorophyta
B. Chrysophyta
C. Phaeophyta
D. Rhodophyta

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Question 4

Which algal division never produces motile, flagellated cells among any of its members?

A. Chlorophyta
B. Chrysophyta
C. Phaeophyta
D. Rhodophyta

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Question 5

The storage bodies present in chloroplasts of chlorophyceae are called as ________

A. Pyrenoids
B. Carragen
C. Stroma
D. Alga

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Question 6

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

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Question 7

The kelps are algae found in

A. chlorophyta
B. chrysophyta
C. phaeophyta
D. pyrrophyta

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Question 8

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

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Question 9

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

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Question 10

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

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Question 11

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

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Question 12

Chrysolaminarin is an energy storage material characteristic of

A. chlorophyta
B. chrysophyta
C. phaeophyta
D. rhodophyta

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Question 13

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

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Question 14

Which of the following modes are used by spirogyra to reproduce?

A. Fragmentation
B. Multiple fission
C. Spore formation
D. Binary fission

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Question 15

A leaf like photosynthetic organ in Phaecophyceae is called as ________

A. Frond
B. Stipe
C. Holdfast
D. Algin

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Question 16

Rhodophyceae is also called as red algae because of the presence of a pigment called r-phycoerythrin.

A. True
B. False

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Question 17

The color in Phaecophyceae depends on the amount of xanthophyll and fucoxanthin.

A. True
B. False

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Question 18

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

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Question 19

Gelidium and Gracilaria is used in the formation of _______

A. Agar
B. Vinegar
C. Yoghurt
D. Beer

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Question 20

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

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Question 21

Food is stored in Phaecophyceae as ___________

A. Starch
B. Laminol
C. Glucose
D. Fructose

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Question 22

All algae possess

A. chlorophytanuclei
B. chloroplasts
C. Both A and B
D. None of these

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Question 23

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

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Question 24

Chlamyodomonas reinhardtii is a green _________ algae.

A. unicellular
B. di-cellular
C. multicellular
D. either unicellular or di-cellular

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Question 25

Algae are classified into 6 groups, technically known as

A. categories
B. divisions
C. genera
D. domains

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Question 26

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

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Question 27

Zooxanthellae are algal symbiont that live within coral reef animals. These algae belong to

A. chlorophyta
B. chrysophyta
C. pyrrophyta
D. rhodophyta

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Question 28

Frustules made of silica are characteristic of

A. euglenoids
B. diatoms
C. desmids
D. seaweeds

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Question 29

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

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Question 30

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

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Question 31

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

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Question 32

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

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Question 33

Bioluminescence is a phenomenon associated with

A. chrysophyta
B. phaeophyta
C. pyrrophyta
D. chlorophyta

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Question 34

Reproduction in humans is an example of _______

A. Isogamous
B. Anisogamous
C. Oogamous
D. Sapiogamous

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Question 35

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

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Question 36

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

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Question 37

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

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Question 38

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

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Question 39

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

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Question 40

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

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Question 41

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

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Question 42

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

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Question 43

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

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Question 44

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

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Question 45

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

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Question 46

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

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Question 47

Thallophyta follows cryptogamae.

A. True
B. False

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Question 48

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

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Question 49

Algae are found in all of the following places except

A. oceans
B. soils
C. lakes and streams
D. associates with fungi

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Question 50

The __________ is the vegetative body of algae.

A. mycelium
B. plasmodium
C. pseudoplasmodium
D. thallus

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Question 51

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

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Question 52

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

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Question 53

All algae possess

A. nuclei
B. chloroplasts
C. Both (a) and (b)
D. none of these

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