Tag: bryophyta

Questions Related to bryophyta

Which one controls dehiscence of sporangium in Dryopteris?

  1. Annulus

  2. Tapetum

  3. Sorus

  4. Indusium


Correct Option: A

In moss, antheridia and archegonia occur at the tips of two different branches of the same plant. The condition is called

  1. Monoecious and autoicous

  2. Monoecious and paroicous

  3. Monoecious and synoicous

  4. Dioecious


Correct Option: A
Explanation:

Option 'A' is correct

Monoecious and autoicous means that both the male and female sex organ i.e., artheridia and archegonia are found on same individual or plant (monoicous) but on two different branches of the plant. The sex organs are present at the tips of the branches.

Riccia gametophyte develops from spore and ends in

  1. Thallus

  2. Capsule

  3. Zygote

  4. Spore


Correct Option: C

Sporophyte is completely dependent in

  1. Selaginella

  2. Dryopteris

  3. Riccia

  4. Pinus


Correct Option: C

Sporogonium of Polytrichum possesses

  1. Foot, seta and capsule

  2. Ribbon shaped thallus

  3. Cordate prothallus

  4. Fleshy thallus


Correct Option: A

Antheridia and archegonia are sex organs of

  1. Spirogyra

  2. Mucor

  3. Moss

  4. Puccinia


Correct Option: C

Spores are liberated only after decay and decomposition of thallus in

  1. Marchantia

  2. Anthoceros

  3. Riccia

  4. Funaria


Correct Option: C

Primitive type of stomata occur in Moss over

  1. Apophysis

  2. Leaves

  3. Axis

  4. All the above


Correct Option: A

Sporophyte of Riccia contains

  1. Spores, elaters and nutritive cells

  2. Spores and nutritive cells

  3. Elaters and spores

  4. Spores only


Correct Option: B

Sex organs are embedded in the thallus in

  1. Moss

  2. Riccia

  3. Azolla

  4. Fern


Correct Option: B