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Standard XII
Biology
Question

Asexual reproduction in liverworts takes place by ____________________.
  1. Gemmae formation and diploid spore formation
  2. Spores formation and isogamy
  3. Fragmentation of thalli and gemmae formation
  4. Fragmentation and zoospore formation

A
Fragmentation of thalli and gemmae formation
B
Gemmae formation and diploid spore formation
C
Spores formation and isogamy
D
Fragmentation and zoospore formation
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Solution
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Asexual reproduction in liverworts takes place by fragmentation of thalli, or by the formation of specialised structures called gemmae.
So the correct option is A.

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Similar Questions
Q1
Which of the following group of plants is being described by the given statements?
(i) The plant body is thalloid.
(ii) Asexual reproduction takes places by fragmentation of thalli, or by the formation of specialized structures called gemmae.
(iii) The sporophyte is differentiated into a foot, seta and capsule.
(iv) They grow usually in moist and shady habitats.
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Q2

In Spirogyra, asexual reproduction takes place by :
(a) division of a cell into two cells.
(b) breaking up of filaments into smaller bits.
(c) division of a cell into many cells.
(d) formation of a large number of buds.

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Q3

Identify the incorrect statement.
(a) In asexual reproduction, the offspring produced are morphologically and genetically identical to the parent.
(b) Zoospores are sexual reproductive structures.
(c) In asexual reproduction, a single parent prodices offspring with or without the formation of gametes.
(d) Conidica are asexual structure in Penicillium.

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Q4

Spore formation in bacteria is a method of reproduction.

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Q5
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.
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