UPSC Exam > UPSC Videos > Botany Optional for UPSC > Lichens: Thallus Structure: Reproduction: Types: Habitat: Rhizinae: Symbiotic Association: Mutualism
Lichens: Thallus Structure: Reproduction: Types: Habitat: Rhizinae: Symbiotic Association: Mutualism Video Lecture | Botany Optional for UPSC
|
179 videos|140 docs
|
FAQs on Lichens: Thallus Structure: Reproduction: Types: Habitat: Rhizinae: Symbiotic Association: Mutualism Video Lecture - Botany Optional for UPSC
| 1. What is the structure of a lichen thallus? |  |
Ans. The thallus of a lichen is a composite structure made up of fungal hyphae and photosynthetic partners, usually algae or cyanobacteria. The thallus can be classified into three main forms: crustose (crust-like), foliose (leaf-like), and fruticose (shrub-like). These structures provide protection, moisture retention, and surface area for photosynthesis, allowing lichens to thrive in various environments.
| 2. How do lichens reproduce? | |
Ans. Lichens reproduce through both sexual and asexual methods. Asexually, they can produce soredia or isidia, which are small fragments containing both fungal and algal cells that can disperse and form new lichens. Sexually, the fungal partner produces spores that require compatible algal cells to form a new lichen. This dual reproduction strategy allows lichens to adapt to diverse habitats.
| 3. What types of lichens exist, and how are they classified? | |
Ans. Lichens are classified into three main types based on their thallus morphology: crustose lichens, which are tightly attached to the substrate; foliose lichens, which have leaf-like lobes; and fruticose lichens, which are branched and often resemble shrubs. Each type has adapted to specific environmental conditions, influencing their distribution and ecological roles.
| 4. What are the habitats of lichens and their ecological significance? | |
Ans. Lichens can be found in a wide range of habitats, including rocky surfaces, tree bark, soil, and even extreme environments like deserts and tundras. They play a crucial role in ecosystems by contributing to soil formation, providing food and habitat for various organisms, and serving as bioindicators of environmental health due to their sensitivity to pollution and climate changes.
| 5. How do lichens exemplify mutualism in their symbiotic associations? | |
Ans. Lichens are a prime example of mutualism, where the fungal partner provides structure and protection, while the photosynthetic partner (alga or cyanobacterium) supplies carbohydrates through photosynthesis. This symbiotic relationship enhances the survival and proliferation of both organisms, allowing them to colonize environments that neither could easily inhabit alone.
Related Exams
About this Video
|
Dec 22, 2024 Last updated |
Video Description: Lichens: Thallus Structure: Reproduction: Types: Habitat: Rhizinae: Symbiotic Association: Mutualism for UPSC 2024 is part of Botany Optional for UPSC preparation.
The notes and questions for Lichens: Thallus Structure: Reproduction: Types: Habitat: Rhizinae: Symbiotic Association: Mutualism have been prepared according to the UPSC exam syllabus.
Information about Lichens: Thallus Structure: Reproduction: Types: Habitat: Rhizinae: Symbiotic Association: Mutualism covers all important topics for UPSC 2024 Exam.
Find important definitions, questions, notes, meanings, examples, exercises and tests below for Lichens: Thallus Structure: Reproduction: Types: Habitat: Rhizinae: Symbiotic Association: Mutualism.
Introduction of Lichens: Thallus Structure: Reproduction: Types: Habitat: Rhizinae: Symbiotic Association: Mutualism in English is available as part of our Botany Optional for UPSC for UPSC & Lichens: Thallus Structure: Reproduction: Types: Habitat: Rhizinae: Symbiotic Association: Mutualism in
Hindi for Botany Optional for UPSC course. Download more important topics related with notes, lectures and mock test series for
UPSC Exam by signing up for free.
Description
Video Lecture & Questions for Lichens: Thallus Structure: Reproduction: Types: Habitat: Rhizinae: Symbiotic Association: Mutualism Video Lecture | Botany Optional for UPSC - UPSC full syllabus preparation | Free video for UPSC exam to prepare for Botany Optional for UPSC.
Information about Lichens: Thallus Structure: Reproduction: Types: Habitat: Rhizinae: Symbiotic Association: Mutualism
Here you can find the meaning of Lichens: Thallus Structure: Reproduction: Types: Habitat: Rhizinae: Symbiotic Association: Mutualism defined & explained in the simplest way possible.
Besides explaining types of Lichens: Thallus Structure: Reproduction: Types: Habitat: Rhizinae: Symbiotic Association: Mutualism theory, EduRev gives you an ample number of questions to practice Lichens: Thallus Structure: Reproduction: Types: Habitat: Rhizinae: Symbiotic Association: Mutualism tests,
examples and also practice UPSC tests.
|
179 videos|140 docs
|
|
Explore Courses for UPSC exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
Related Searches
Lichens: Thallus Structure: Reproduction: Types: Habitat: Rhizinae: Symbiotic Association: Mutualism Video Lecture | Botany Optional for UPSC
,Free
,Important questions
,shortcuts and tricks
,video lectures
,Sample Paper
,past year papers
,Summary
,Lichens: Thallus Structure: Reproduction: Types: Habitat: Rhizinae: Symbiotic Association: Mutualism Video Lecture | Botany Optional for UPSC
,study material
,mock tests for examination
,Lichens: Thallus Structure: Reproduction: Types: Habitat: Rhizinae: Symbiotic Association: Mutualism Video Lecture | Botany Optional for UPSC
,ppt
,Previous Year Questions with Solutions
,Exam
,Semester Notes
,Extra Questions
,Objective type Questions
,MCQs
,Viva Questions
,practice quizzes
;
Study Lichens: Thallus Structure: Reproduction: Types: Habitat: Rhizinae: Symbiotic Association: Mutualism on the App
Students of UPSC can study Lichens: Thallus Structure: Reproduction: Types: Habitat: Rhizinae: Symbiotic Association: Mutualism alongwith tests & analysis from the EduRev app,
which will help them while preparing for their exam. Apart from the Lichens: Thallus Structure: Reproduction: Types: Habitat: Rhizinae: Symbiotic Association: Mutualism,
students can also utilize the EduRev App for other study materials such as previous year question papers, syllabus, important questions, etc.
The EduRev App will make your learning easier as you can access it from anywhere you want.
The content of Lichens: Thallus Structure: Reproduction: Types: Habitat: Rhizinae: Symbiotic Association: Mutualism is prepared as per the latest UPSC syllabus.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup