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NEET Exam  >  NEET Test  >  Topic-wise MCQ Tests  >  Multiple Choice Questions (MCQs): Algae - NEET MCQ

Algae - Free MCQ Practice Test with solutions, NEET


MCQ Practice Test & Solutions: Multiple Choice Questions (MCQs): Algae (10 Questions)

You can prepare effectively for NEET Topic-wise MCQ Tests for NEET with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Multiple Choice Questions (MCQs): Algae". These 10 questions have been designed by the experts with the latest curriculum of NEET 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 10 minutes
  • - Number of Questions: 10

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Multiple Choice Questions (MCQs): Algae - Question 1
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"Agar-agar" is obtained from :-

Detailed Solution: Question 1

The gelling agent in agar is an unbranched polysaccharide obtained from the cell walls of some species of red algae, primarily from tengusa (Gelidiaceae) and ogonori (Gracilaria). ... In chemical terms, agar is a polymer made up of subunits of the sugar galactose.

Topic in NCERT: Algae and their commercial uses

Line in NCERT: "agar, one of the commercial products obtained from gelidium and gracilaria are used to grow microbes and in preparations of ice-creams and jellies."

Multiple Choice Questions (MCQs): Algae - Question 2
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Which among the following is an incorrect statement?

Detailed Solution: Question 2

  • Most of the algae reproduce using spore formation.
  • Asexual spores are called as zoo-spores and the reproductive part in algae is called zoosporangium.
  • Under favourable conditions, these organisms germinate to form new organism.
  • Zoo-spores are motile and flagellated.

Topic in NCERT: Algae

Line in NCERT: "they are flagellated (motile) and on germination gives rise to new plants."

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Multiple Choice Questions (MCQs): Algae - Question 3
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Due to which pigment red algae are capable of surviving in deep sea :-

Detailed Solution: Question 3

Red algae (Rhodophyceae) contain Chl a and d and main pigment is Phycoerythrin . Red algae are red due to Phycoerythrin.it helps in photosynthesis in great depth in ocean and also on surface of water.

Topic in NCERT: Rhodophyceae

Line in NCERT: "the members of rhodophyceae are commonly called red algae because of the predominance of the red pigment, r-phycoerythrin in their body."

Multiple Choice Questions (MCQs): Algae - Question 4
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Which of the following statement is true for algae :-

Detailed Solution: Question 4

The term thallus is a botanical term that refers to the body of a plant that does not have leaves, stems and roots. In botany, historically, this term has been applied to algae, fungi and the various divisions of bryophytes.

Topic in NCERT: Algae reproduction

Line in NCERT: "each fragment develops into a thallus."

Multiple Choice Questions (MCQs): Algae - Question 5
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Classification of algae is mainly based up on :-

Detailed Solution: Question 5

Classification of algae is mainly based upon the nature of their pigments.
Red Algae (Rhodophyceae) are characterized by the pigments - Phycoerythrin and Phycocyanin.
Brown Algae (Phaeophyceae) are brown due to the pigment Fucoxanthin.
Green Algae (Chlorophyceae) are characterized by pigments Chlorophyll-a, b, Carotenes, Xanthophyll. Hence option C is correct.

Topic in NCERT: Algae classification

Line in NCERT: "pigment possesed and the type of stored food, algae are classfied into three classes, namely chlorophyceae, phaeophyceae and rhodophyceae."

Multiple Choice Questions (MCQs): Algae - Question 6
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A prokaryotic autotrophic nitrogen fixing symbiont found in

Detailed Solution: Question 6

It Is cycas besides paddy fields it also found in vegetative part of cycas ..And being a cyanobacteria it acts as a symbiont and readily perform activity of nitrogen fixation so cycad is more correct answer.

Multiple Choice Questions (MCQs): Algae - Question 7
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Mannitol is a reserved food found in

Detailed Solution: Question 7

Correct option is D. Fucus
 Fucus are brown algae which is found in the intertidal zones of rocky seashores. These algae belong to the class Phaeophyceae and order Fucales, which stored food in the form of laminarin, mannitol, and oil. Mannitol is stored as a food reserve in Fucus. They are common littoral seaweed growing in the hard-rocky areas of the sea.

Multiple Choice Questions (MCQs): Algae - Question 8
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A leaf like photosynthetic organ in Phaecophyceae is called as ________

Detailed Solution: Question 8

  • The vegetative cells in Phaecophyceae are made up of two layers with the inner one being made of cellulose and the other being made of gelatinous coating of algin.
  • A leaf like photosynthetic organ in Phaecophyceae is called as frond.
  • They also have a stalk called stipe and a substratum called as holdfast.

Topic in NCERT: Algae

Line in NCERT: "the plant body is usually attached to the substratum by a holdfast, and has a stalk, the stipe and leaf like photosynthetic organ - the frond."

Multiple Choice Questions (MCQs): Algae - Question 9
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Reserve food of algae and fungi are :-

Detailed Solution: Question 9

Starch is stored in plants as food reserve. Starch is present in two forms- Amylose- which is linear chain of glucose and Amylopectin is a branched chain polymer of glucose Algae are chlorophyll-bearing, simple, thalloid, autotrophic and largely aquatic (both. fresh water and marine) organisms. They occur in a variety of other habitats: moist stones, soils and wood. Some of them also occur in association with fungi (lichen) and animals.

Topic in NCERT: Rhodophyceae

Line in NCERT: "the food is stored as floridean starch which is very similar to amylopectin and glycogen in structure."

Multiple Choice Questions (MCQs): Algae - Question 10
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What is the primary composition of the vegetative cells in brown algae?

Detailed Solution: Question 10

The vegetative cells of brown algae are primarily composed of cellulose, which provides structural support.

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About this NEET Practice Test

This test contains 10 MCQs on Multiple Choice Questions (MCQs): Algae with detailed solutions for each question. It is part of the Topic-wise MCQ Tests for NEET course on EduRev, designed to align with the current NEET syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

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