Home
Class 11
BIOLOGY
Assertion: Chlorella and spirulina are u...

Assertion: Chlorella and spirulina are used as a food supplement by space travellers
Reason: Chlorella and spirulina are unicellular algae.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

if both assertion and reason are true but reason is not the correct explanation of assertion

C

if assertion is true but reason is false.

D

if both assertion and reason are false.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze both the assertion and the reason provided. ### Step 1: Evaluate the Assertion The assertion states that "Chlorella and spirulina are used as a food supplement by space travelers." - **Analysis**: This statement is true. Chlorella and spirulina are indeed used as food supplements, especially in space travel, due to their high nutritional value and compact form. ### Step 2: Evaluate the Reason The reason given is "Chlorella and spirulina are unicellular algae." - **Analysis**: This statement is also true. Both chlorella and spirulina are classified as unicellular algae. However, the reason does not directly explain why they are used as food supplements by space travelers. ### Step 3: Determine the Relationship Now we need to determine if the reason correctly explains the assertion. - The assertion is true, but the reason does not provide a valid explanation for the assertion. The nutritional benefits and safety of these algae are the real reasons for their use as food supplements, not merely the fact that they are unicellular. ### Conclusion Based on the evaluations: - Both the assertion and the reason are true. - However, the reason is not the correct explanation for the assertion. Thus, the correct option is: **Both assertion and reason are true, but the reason is not the correct explanation for the assertion.** ---

To solve the question, we need to analyze both the assertion and the reason provided. ### Step 1: Evaluate the Assertion The assertion states that "Chlorella and spirulina are used as a food supplement by space travelers." - **Analysis**: This statement is true. Chlorella and spirulina are indeed used as food supplements, especially in space travel, due to their high nutritional value and compact form. ### Step 2: Evaluate the Reason The reason given is "Chlorella and spirulina are unicellular algae." ...
Promotional Banner

Topper's Solved these Questions

  • PLANT KINGDOM

    NCERT FINGERTIPS ENGLISH|Exercise Plant Kingdom|160 Videos
  • PLANT KINGDOM

    NCERT FINGERTIPS ENGLISH|Exercise Plant Kingdom|160 Videos
  • PLANT GROWTH AND DEVELOPMENT

    NCERT FINGERTIPS ENGLISH|Exercise Plant Growth And Development|154 Videos
  • RESPIRATION IN PLANTS

    NCERT FINGERTIPS ENGLISH|Exercise Respiration In Plants|130 Videos

Similar Questions

Explore conceptually related problems

Assertion: Alage can bridge the gap between demand and supply of proteinaceous diet, worldwide. Reason: Chlorella and Spirullina are unicellular proteinaceous food suppliment.

Go through the following statements (i) IN chlorophyceae the flagella re 2 in number, unequal in size and lateral in position (ii) In phaeophyceae flagella are 2-8 in number, equal in size and apical in position (iii) Chlorella and Spirullina re rich in proteins and are used as food supplements even by space travellers. (iv) The leaves in pteridophyta are microphylls as in Selaginella or macrophylls as in ferns. Which of these are correct

Consider the following statement and select correct set for brown algae as well as red algae. (i) Certain marine forms produce large amonts of hydrocolloids. (ii) Used as food supplements by space travellers. (iii) Organisms may have unicellular and multicellular plant body. (iv) They have cellulose in cell wall and chlorophyll a pigment.

Find the wrong statements (a) Ulothrix and Spirogyra are filamentous forms (b) Porphyra and Laminaria are fresh water algae (c ) Stored food is in the form of mannitol in rhodophyceae (d) Chlorella and Spirulina are unicellular algae.

______and ______are unicellular algae, rich in proteins, that are used as food supplements even by space travellers.

To which class space alga Chlorella belongs

Assertion : For the extraction of iron, haematite are is used. Reason : Haematite is a carbonate ore

Assertion: Chlorella, a green alga, is commonly known as space alga. Reason: It is used by exobiologists for oxygen and disposal of nitrogen in prolonged space flight.

Assertion : Algae and fungi are classified as thallophytes. Reason : They both are autotrophs.

Assertion : Besides chlorophyll a, blue - green and red algae show the presence of phycobiliproteins . Reason : Chlorophyll and phycobiliproteins are integrated into thylakoids.