Gemmae are multicellular green structures for vegetative propagation. These are found inside gemma cups in _________________.

Riccia capsule

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Marchantia thallus

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Funaria protonema

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Polytrichum thallus

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Solution

The correct option is A Marchantia thallus
In Marchantia, the plant body consists of a dorsoventrally flattened, prostrate and dichotomously branched thallus. The thalli are conspicuous, the apex of each thallus is notched. Along the mid-rib are present characteristic, prominent goblet or cup-shaped structures, the gemma cups, with smooth, dentate or frilled margins. These cups enclose asexual reproductive bodies called gemma.So the correct option is B.

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Similar questions

Q. Gemmae are vegetatively reproducing structures of

Q. Assertion :Liverworts fail to spread to a new locality through fragmentation. Reason: Gemmae are helpful in propagating liverworts in different locality.

On the Basis of characters in group A and group B identify the correct:
$\begin{matrix} G r o u p - A & G r o u p - B (i) L a n d p l a n t & (i) L a n d p l a n t (i i) P l a n t b o d y f o r m s t h a l l u s & (i i) S p o r o p h y t e i s d i v i d e d r o o t, s t e m a n d l e a v e s (i i i) G e m m a c u p s p r e s e n t o n d o r s a l s u r f a c e & (i i i) V a s c u l a r t i s s u e i s p r e s e n t (i v) M u l t i c e l l u l a r s c a l e s a r e p r e s e n t & (i v) F r u i t s a r e a b s e n t (v) G a m e t o p h y t i c p l a n t b o d y & (v) S e e d s a r e p r e s e n t \end{matrix}$

Q. Which of the following statement (s) is/are correct about gemmae?

(i) They are specialised structures by which asexual reproduction take place in liverworts.

(ii) They are green, multicellular and asexual buds.

(iii) They develop in small receptacles called gemma cups.

(iv) They detach from the parent body and germinate to form new individuals.

Q. Gemmae are the specialized structures produced in liverworts. These are ____________________.

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