Which of the following statement(s) is/are correct about gemmae ?
(i) These are specialised structures by which asexual reproduction take place in liverworts.
(ii) They are green, unicellular and asexual buds.
(iii) They develop in small receptacles called gemma cups.
(iv) They detach from parent body and germinate to form new individuals.

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(i) and (ii) only

(ii) and (iii) only

(i) and (iii) only

i ,iii and iv

answer is D.

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Detailed Solution

Gemmae are a means of asexual reproduction found in many bryophytes (e.g, liverworts). They are one to many celled, specially produced clonal plant fragments. They are green, multicellular, asexual buds which develop in small receptacles (called gemma cups) located on the thalli. Gemmae become detached from the parent body and germinate to form new individuals.

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