Symbiosis

Symbiosis is a Science & Technology concept from the MPSC syllabus, tested in 3 past MPSC questions (2017, 2018). Below are those real questions with their correct answers and explanations, plus the concepts worth being comfortable with first.

Real questions

Years tested

2 · 2017–2018

In context

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Asked in

2018 2017

What you need to know first

Basic plant kingdomSymbiotic relationships

Real questions that test this

जेव्हा मधमाशी एका फुलांनतर दुसऱ्या फुलास भेट देते, तेव्हा कोणती प्रक्रिया होते? When honey-bees visit from one flower to another, they carry out the process of

(a)(1) परागीकरण

(b)(2) फलन

(c)(3) पुनर्रूपदन

(d)(4) वरीलपैकी सर्व

1)Pollination✓ Correct

2)Fertilization

3)Reproduction

4)All of the above

When honeybees move from one flower to another, they transfer pollen grains, successfully carrying out the process of pollination.

लायकेनच्या संदर्भात खालीलपैकी कोणते विवरण बरोबर आहे ? Which description is correct for Lichens ?

1)शैवाल आर्द्रता व खनिज घटकांचे शोषण करून कवकास उपलब्ध करून देतात आणि प्रकाश संश्लेषण करून अन्नाचे शोषण करतात. / Algae makes available the moisture and minerals to Fungus, which absorbs food by photosynthesis.

2)कवक आर्द्रता व खनिजांचे शोषण करून शैवालास उपलब्ध करून देतात व शैवाल प्रकाश संश्लेषण करून अन्न तयार करतात. / The Fungus make available the moisture and minerals to Algae, which prepare food by photosynthesis.✓ Correct

3)त्यांच्या मधे फॅकल्टेटीव्ह म्युच्युअॅलीझम असते. / They are facultative mutualistic.

4)लायकेन मध्ये चांगल्या प्रकारे विकसित असणाऱ्या स्टील उती आर्द्रता शोषून घेतात. / Lichens have well developed stele for absorption of moisture.

Lichens are a symbiotic association between algae (phycobiont) and fungi (mycobiont), where both organisms benefit mutually.

उक्रांती दरम्यान वनस्पतीची व परागीकरण करणाऱ्या घटकांची उक्रांती During the course of evolution, plants and their pollinators evolved

(a)(1) स्वतंत्रपणे झाली

(b)(2) एकमेकांसोबत झाली

(c)(3) प्रथम वनस्पतींची व नंतर परागीकरण करणाऱ्या घटकांची झाली

(d)(4) प्रथम परागीकरण करणाऱ्या घटकांची व नंतर वनस्पतींची झाली

1)Separately

2)Simultaneously✓ Correct

3)Plants first and then pollinators

4)Pollinators first and then plants

Co-evolution occurs when two or more species reciprocally affect each other's evolution, meaning plants and their pollinators evolve simultaneously.

More Science & Technology concepts

Isotopes Chemistry Radioactivity Sound waves Taxonomy Atomic number Avogadro number Biodiversity Biology Molar mass Mole concept Plant morphology

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