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MCQ on Algae Diversity in Living World with Answers PDF Download for FREE
Before we start the MCQ on Algae we have to know what are algae? Basically Algae is a large, diverse group of eukaryotic, photosynthetic organisms that are not necessarily related to each others. These MCQs on Algae prepared by thelivelearns team are most important part of all medical entrance exam including NEET, AIIMS, JIPMER and other Exams.
1. Plants which are not differentiated roots, stems and leaves are grouped under………
(A) Thallophytes
(B) Gymnosperms
(C) Pteriodophytes
(D) Spermatophyte
Answer: Thallophytes
2. Asexual reproduction in Spirogyra……..
(A) takes place by zoospore formation
(B) has not been recorded
(C) takes place by hypnospore formation
(D) takes place by aplanospore formation
Answer: Takes place by aplanospore formation
3. Agar-Agar is derived from…….
(A) fungi
(B) algae
(C) bryophytes
(D) gymnosperms
Answer: Algae
4. 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
Answer: Members of the Phaeophyta is greater than members of the Rhodophyta
5. Starch is an energy storage material characteristic of……
(A) chlorophyta
(B) chrysophyta
(C) phaeophyta
(D) rhodophyta
Answer: Rhodophyta
6. Heterocysts are found in…….
(A) Nostoc
(B) Cystopus
(C) Ulothrix
(D) Aspergillus
Answer: Nostoc
7. What is the storage product of most algae…….?
(A) Cellulose
(B) Glycogen
(C) Starch and oil
(D) Fat
Answer: Starch and oil
8. In Ulothrix, reduction division takes place at the time of……..
(A) germination of zygote
(B) formation of spores
(C) formation of gametes
(D) formation of zoospores
Answer: germination of zygote
9. 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
Answer: rhodophyta
10. 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
Answer: members of the Phaeophyta is approximately equal to members of the Oomycota
11. 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
Answer: All of the above
12. 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
Answer: All members of algae are also members of photolithotrophic autotrophs, but not all members of photolithotrophic autotrophs are members of algae
13. Zooxanthellae are algal symbiont that live within coral reef animals. These algae belong to………
(A) chlorophyta
(B) chrysophyta
(C) pyrrophyta
(D) rhodophyta
Answer: pyrrophyta
14. 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
Answer: Eukaryotic organisms that have chlorophyll a and produce O2
15. Which is a rich source of protein…….?
(A) Nostoc
(B) Anabaena
(C) Spirulitia
(D) Oscillatoria
Answer: Spirulitia
16. Filaments of Ulothrix are…….
(A) branched
(B) unbranched
(C) brick-shaped
(D) girdle-shaped
Answer: Unbranched
17. Red colour of the red algae is due to………
(A) y-phycocyanin
(B) Xanthophyll
(C) Carotene
(D) y-phycoerythrin
Answer: Y-phycoerythrin
18. Algae are classified into 6 groups, technically known as…………
(A) categories
(B) divisions
(C) genera
(D) domains
Answer: Divisions
19. Cyanobacteria name has been given to……..
(A) Mycoplasma
(B) Myxophyceae
(C) Myxomycetes
(D) Schizomycetes
Answer: Myxophyceae
20. Simplest type of reproduction in plants is found in……..
(A) Ulothrix
(B) Nostoc
(C) Chlamydomonas
(D) Spirogyra
Answer: Chlamydomonas
21. Spirogyra differs from moss-protonema in having…….
(A) pyrenoids
(B) branched filaments
(C) discoid chloroplasts
(D) rhizoidal branches
Answer: Pyrenoids
22. Parasitic alga is……..
(A) Cephaleuros
(B) Ulothrix
(C) Spirogyra
(D) Chlamydomonas
Answer: Cephaleuros
23. The __________ is the vegetative body of algae.
(A) mycelium
(B) pseudoplasmodium
(C) is scattered the least by smoke or fog
(D) thallus
Answer: Thallus
24. 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
Answer: An alternation of generations
25. Which algal division never produces motile, flagellated cells among any of its members………?
(A) Chlorophyta
(B) Chrysophyta
(C) Phaeophyta
(D) Rhodophyta
Answer: Rhodophyta
26. 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
Answer: Both (a) and (b)
27. Bioluminescence is a phenomenon associated with…….
(A) chrysophyta
(B) phaeophyta
(C) pyrrophyta
(D) chlorophyta
Answer: Pyrrophyta
28. All algae possess…………
(A) nuclei
(B) chloroplasts
(C) Both (a) and (b)
(D) none of these
Answer: Both (a) and (b)
29. 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
Answer: Chrysophyta
30. 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
Answer: Is lesser than the number of members of the division Chlorophyta that live in freshwater habitats
31. Zygotic meiosis occurs in……
(a) Algae
(b) Gymnosperms
(c) Angiosperms
(d) Pteridophyta.
Answer: Algae
32. In Ulothrix sexual reproduction is by…..
(a) Isogamy
(b) Anisogamy
(c) Oogamy
(d) Conjugation.
Answer : Anisogamy
33. Algae are included in…..
(a) Tracheophytes
(b) Embryophytes
(c) Cormophytes
(d) Thallophytes.
Answer: Thallophytes.
34. Agar is commercially obtained from….
(a) Green algae
(b) Blue-green algae
(c) Brown algae
(d) Red-algae.
Answer: Red-algae.
35. Giant algae/sea weeds belong to….
(a) Xanthophyceae
(b) Phaeophyceae
(c) Rhodophyceae
(d) Chlorophyceae.
Answer: Phaeophyceae
36. Pyrenoid consists of…..
(a) Starch around protein
(b) Protein around starch
(c) Protein only
(d) Starch only.
Answer: Starch around protein
37. Plant body is thallus in…..
(a) Gymnosperms
(b) Algae
(c) Bryophyta
(d) Pteridophyta
Answer:Algae
38. Which is a pond scum…..?
(a) Ulothrix
(b) Spirogyra
(c) Anabaena
(d) Nostoc.
ANS. Spirogyra
39. Floridean starch occurs in….
(a) Myxophyceae
(b) Chlorophyceae
(c) Rhodophyceae
(d) Phaeophyceae.
ANS . Rhodophyceae
40. Ancestors of land plants possessed….
(a) Arboreal habit
(b) Heterotrichous habit
(c) Thorny habit
(d) Prostrate habit.
ANS. Heterotrichous habit
41. An alga rich in proteins is….
(a) Chlorella
(b) Oscillatoria
(c) Ulothrix
(d) Spirogyra.
ANS. Chlorella
42. The alga found in still fresh water is….
(a) Sargassum
(b) Laminaria
(c) Polysiphonia
(d) Spirogyra.
ANS. Spirogyra.
43. Brown algae have a characteristic pigment….
(a) Chl. b
(b) Chl. c
(c) Chl. d
(d) Chl. E
ANS. Chl. c
44. Life cycle of Spirogyra is
(a) Haplobiontic
(b) Diplobiontic
(c) Haplodiplobiontic
(d) None of these.
ANS. Haplobiontic
45. Pyrenoids are responsible for….
(a) Food synthesis
(b) Food transport
(c) Food absorption
(d) Food storage
ANS. Food storage
46. Phycology deals with the study of…
(a) Algae
(b) Fungi
(c) Bryophytes
(d) Pteridophytes.
ANS. Algae
47. Thin walled non-flagellated spores are…
(a) Zoospores
(b) Aplanospores
(c) Hypnospores
(d) Zygospores.
ANS. Aplanospores
48. Pigment mainly responsible for photosynthesis in red algae is….
(a) Phycoerythrin
(b) Chlorophyll a
(c) Carotene
(d) Xanthophyll.
ANS. Chlorophyll a
49. Ancestors of land plants were….
(a) Red algae
(b) Brown alogae
(c) Green algae
(d) Bryophytes.
ANS. Green algae
50. Phycocyanin is found in….
(a) Volvox
(b) Ulothrix
(c) Sargassum
(d) Gelidium.
ANS. Gelidium.