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Plant Reproduction and Development: Gemmae and Spores

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Plant Reproduction and Development: Gemmae and Spores

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Questions and Answers

How are spores produced in bryophytes?

By fusion of gametophytes

By meiosis of sporophyte cells (correct)

By fragmentation of thalli

By mitosis of sporophyte cells

Why are mosses and lichens considered to be the first organisms to colonize rocks?

They decompose rocks making the substrate suitable for plant growth (correct)

Because they have a symbiotic relationship with rocks

Due to their ability to conduct photosynthesis

Their capacity to hold water makes them suitable for rock colonization

What is the main function of the sporophyte in bryophytes?

Producing gametophytes

Secreting protective compounds

Conducting photosynthesis

Attaching to the photosynthetic gametophyte (correct)

Which bryophyte species provides peat, historically used as fuel?

Mosses Signup and view all the answers

How do liverworts reproduce asexually?

By forming gemmae Signup and view all the answers

What distinguishes the plant body of a liverwort like Marchantia?

'Thalloid' body with dorsiventral thallus closely appressed to the substrate Signup and view all the answers

Why do liverworts grow in moist, shady habitats?

To reduce water loss through evaporation Signup and view all the answers

'Sphagnum' species are particularly known for their:

'Water-holding' capacity Signup and view all the answers

What is the ecological importance of mosses on soil?

Absorbing excess rainwater and preventing erosion Signup and view all the answers

Why are bryophytes classified into liverworts and mosses?

Based on their reproductive strategies. Signup and view all the answers