Tag: cryptogams

Questions Related to cryptogams

Slime pores are found in

botany kingdom plantae uses of bryophytes introduction to bryophytes cryptogams

  1. Funaria

  2. Riccia

  3. Marchantia

  4. Anthoceros

Show answer
Correct Option: D
Explanation:

Slime pores are found in :

Correct option is (D), Anthoceros.
Anthoceros grown in moist soil. They have thallus body and found in shady area. Slime pores are present in Anthoceros. 
Hence, option D is correct.

The plant body of moss(Funaria) is?

botany kingdom plantae uses of bryophytes introduction to bryophytes cryptogams

  1. Completely sporophyte

  2. Predominantly gametophyte with sporophyte

  3. Completely gametophyte

  4. Predominantly sporophyte with gametophyte

Show answer
Correct Option: A

Reduced gametophyte is the important character of _____

botany kingdom plantae uses of bryophytes introduction to bryophytes cryptogams

  1. Lower cryptogams

  2. Higher cryptogams

  3. Gymnosperms

  4. Angiosperms

Show answer
Correct Option: D
Explanation:

The haploid phase in the life cycle of plants is called Gametophyte. It is a haploid phase. It is well developed in bryophytes and highly reduced in angiosperms.

So, the correct option is 'Angiosperms'.

The plant body of a liverwort is thalloid

botany kingdom plantae uses of bryophytes introduction to bryophytes cryptogams

  1. True

  2. False

Show answer
Correct Option: A
Explanation:

The thallus is dorsiventral and closely appressed to the substrate. 

So the correct answer is True.

Find set of features related to Funaria
a. Protonema
b. Prothallus
c. Gametophore
d. Thallus body
e. NCC in antheridium
f. Haplodiplontic
g. True plant organs in sporophyte
h. Fragmentation

botany kingdom plantae uses of bryophytes introduction to bryophytes cryptogams

  1. b, d, e, g

  2. a, d, f, g

  3. a, c, f, g, h

  4. a, c, f, h

Show answer
Correct Option: A

In bryophytes, zygote produces :

botany kingdom plantae uses of bryophytes introduction to bryophytes cryptogams

  1. Sporophyte

  2. Gametophyte

  3. Prothallus

  4. Spore

Show answer
Correct Option: A

All given members are monoecious,except _______________.

botany kingdom plantae uses of bryophytes introduction to bryophytes cryptogams

  1. Marchantia

  2. Funaria

  3. Anthoceros

  4. Sphagnum

Show answer
Correct Option: A
Explanation:

Marchantia is a large liverwort and is also called as umbrella liverwort. Marcantia is dioicous and hence has seperate male and female plants.

Which of the following is incorrect about bryophytes?

botany kingdom plantae uses of bryophytes introduction to bryophytes cryptogams

  1. Sex organs are multicellular

  2. Water is essential for fertilisation

  3. Meiosis occurs at the time of spore formation

  4. Antherozoids are non-motile

Show answer
Correct Option: A

Peat is used at a fuel in some countries. Remains of which plant give rise to peat?

biology pictorial feature of plant kingdom uses of bryophytes introduction to bryophytes cryptogams

  1. Moss

  2. Ferns

  3. Angiosperms

  4. Gymnosperms

Show answer
Correct Option: A
Explanation:

Peat, also known as turf, is an accumulation of partially decayed vegetaation or organic matter.Sphagnum "moss", also called peat moss, is one of the most common components in peat, although many other plants can contribute.

So, the correct option is A. (moss)

Which among the following genus of the bryophyte have ecological value?

biology pictorial feature of plant kingdom uses of bryophytes introduction to bryophytes cryptogams

  1. Funaria

  2. Riccia

  3. Sphagnum

  4. Anthoceros

Show answer
Correct Option: C
Explanation:

Sphagnum is one of the most important plant genera in the world. Sphagnum is one of the few bryophyte genera able to dominate an ecosystem. A healing ointment prepared by Sphagnum leaves mixed with grease is used in the treatment of cuts and wounds. The decoction prepared by boiling dried Sphagnum in water, is used in the treatment of acute haemorrhage. This decoction is used to cure diseases of eyes. The lakes where sphagnum grows are called as Sphagnum bogs. These are well known to produce peat in acidic water. The bog water is antiseptic and has astringent properties. Sphagnum exhibit strong antibacterial properties against Gaffkeya tetragena and Staphylococcus aureus. Sphagnum peat is suitable for production of low and intermediate BTU gas as well as hydrogen , ethylene , natural gas , methanol and gasoline. Sphagnum is used as an effective filtering and absorption agent for the treatment of waste water and effluent of factories with acid and toxic discharge consisting of heavy metals particularly Ag, Pb, Cu , Hg, Fe , Sb and organic substances like detergents, dyes, microorganisms and soils.