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Plant Kingdom
Lichen is usually cited as an example of ‘symbiosis’ in pl...

Lichen is usually cited as an example of | Class 11 Biology Chapter Plant Kingdom, Plant Kingdom NCERT Solutions

Welcome to the NCERT Solutions for Class 11 Biology - Chapter Plant Kingdom. This page offers a step-by-step solution to the specific question from Exercise 0, Question 3: . With detailed answers and explanations for each chapter, students can strengthen their understanding and prepare confidently for exams. Ideal for CBSE and other board students, this resource will simplify your study experience.

Question 3:

Lichen is usually cited as an example of ‘symbiosis’ in plants where an algal and a fungal species live together for their mutual benefit. Which of the following will happen if algal and fungal partners are separated from each other?
a. Both will survive and grow normally and independent from each other.
b. Both will die
c. Algal component will survive while the fungal component will die.
d. Fungal component will survive while algal partner will die. Based on your answer how do you justify this association as symbiosis.

Answer:

(b) Both will die

Mutualism is the symbiotic relationship between the two different species that gets benefits from each other. And, lichens shows the mutualistic association of algae and fungi.

Algae and fungi both are dependent on each other for their survival in symbiotic relationship. This is how, algal part synthesizes food for fungi and fungi takes up water and minerals for algae. Thus, in case if we separate them, both of them will die.

Other Questions of Chapter Plant Kingdom

Why are bryophytes called the amphibians of the plant kingdom?

Give an example of plants with
a. Haplontic life cycle
b. Diplontic life cycle
c. Haplo- diplontic life cycle

Q: How would you distinguish monocots from dicots?

Q: Differentiate between the following:-
(i)red algae and brown algae
(ii) liverworts and moss
(iii) homosporous and heterosporous pteridophyte
(iv) syngamy and triple fusion

Q: When and where does reduction division take place in the life cycle of a liverwort, a moss, a fern, a gymnosperm and an angiosperm?

Q: Describe the important characteristics of gymnosperms.

Q: Match the followings (column I with column II)
Column I Column II
(a) Chlamydomonas (i) Moss
(b) Cycas (ii) Pteridophyte
(c) Selaginella (iii) Algae
(d) Sphagnum (iv) Gymnosperm

Q: What is the basis of classification of algae?

Q: Both gymnosperms and angiosperms bear seeds, then why are they classified separately?

The heterosporous pteridophytes show certain characteristics, which are precursor to the seed habit in gymnosperms. Explain.

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Which of the following is correct:
(a) Cells of all living organisms have a nucleus.
(b) Both animal and plant cells have a well defined cell wall.
(c) In prokaryotes, there are no membrane bound organelles.
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Mitosis results in producing two cells which are similar to each other. What would be the consequence if each of the following irregularities
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Study Tips for Answering NCERT Questions:

NCERT questions are designed to test your understanding of the concepts and theories discussed in the chapter. Here are some tips to help you answer NCERT questions effectively:

Read the question carefully and focus on the core concept being asked.
Reference examples and data from the chapter when answering questions about Plant Kingdom.
Review previous year question papers to get an idea of how such questions may be framed in exams.
Practice answering questions within the time limit to improve your speed and accuracy.
Discuss your answers with your teachers or peers to get feedback and improve your understanding.

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