Tag: botany

Questions Related to botany

The capsule grows continuously due to the presence of n intercalary meristem in _____________.

botany kingdom plantae uses of bryophytes introduction to bryophytes cryptogams

  1. Marchantia

  2. Polytrichum

  3. Riccia

  4. Anthoceros

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Correct Option: A

Consider the following pairs.
a. Sporogonium opening irregularly- Marchantia
b. Sporogonium splitting down into two halves- Scapania
c. Sporogonium with a bulbous foot- Anthoceros
d. Sporogonium without a long stalk-like seta- Sphagnum.
Which of the pairs are correctly matched?

botany kingdom plantae uses of bryophytes introduction to bryophytes cryptogams

  1. $1, 2, 3$ and $4$

  2. $1, 2$ and $4$

  3. $1, 3$ and $4$

  4. $2$ and $3$

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Correct Option: A

Reindeer moss and Iceland moss found in the extremely cold climates belong to.

botany kingdom plantae uses of bryophytes introduction to bryophytes cryptogams

  1. Bryophytes

  2. Pteridophytes

  3. Algae

  4. Lichens

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Correct Option: A

Funaria is a moss.

botany kingdom plantae uses of bryophytes introduction to bryophytes cryptogams

  1. True

  2. False

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Correct Option: A
Explanation:

Funaria is a genus of moss. In Funaria, rhizoids are present. They are primitive multicellular plants. They are autotrophic plants. They show alteration of generation. They reproduce by spore formation.

Thus, the correct answer is option A.

Plant body of Funaria is ______________.

botany kingdom plantae uses of bryophytes introduction to bryophytes cryptogams

  1. Completely sporophyte

  2. Completely gametophyte

  3. Predominantly sporophyte with gametophyte

  4. Predominantly gametophyte with sporophyte

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Correct Option: A

If the leaf of Funaria has 5 chromosomes, the primary protonema will have ____________.

botany kingdom plantae uses of bryophytes introduction to bryophytes cryptogams

  1. 10 chromosomes

  2. 5 chromosomes

  3. 15 chromosomes

  4. 20 chromosomes

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Correct Option: A

The most completely fossil Bryophyte is?

botany kingdom plantae uses of bryophytes introduction to bryophytes cryptogams

  1. Hepaticites

  2. Sphagnum

  3. Muscites

  4. Naiadita

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Correct Option: A

Which of the following statements is incorrect?

botany kingdom plantae uses of bryophytes introduction to bryophytes cryptogams

  1. Mosses along with lichens are the first organisms to colonise rocks.

  2. Sphagnum is used as packing material for transportation of living material.

  3. In liverworts, spores are produced after meiosis within the capsule.

  4. Funaria possesses unicellular unbranched rhizoids.

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Correct Option: D
Explanation:

Funaria has a radial symmetry with a once branched axis or stem, a number of spirally arranged leaves and branched colourless multicellular rhizoids. The axis is aerial, erect, slender and monopodial branched.

So the correct option is D.

Funaria requires water because ___________________.

botany kingdom plantae uses of bryophytes introduction to bryophytes cryptogams

  1. Fertilisation occurs in water only

  2. Funaria is a hydrophyte

  3. Plants need water for gametogenesis

  4. Gametangia cannot develop without water

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Correct Option: A
Explanation:

Fertilisation of Funaria occurs in water. The antherozoids are released into the water where they swim and reach archegonium, An antherozoid fuses with the egg to produce the zygote. thus, an external layer of water is essential for the swimming of male gametes to the archegonia.

So the correct option is A.

The prominent phase in the life cycle of bryophytes is ___________.

botany kingdom plantae uses of bryophytes introduction to bryophytes cryptogams

  1. gametophyte

  2. sporophyte

  3. seta

  4. sporogonium

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Correct Option: A
Explanation:

Bryophytes shows two morphologically distinct heteromorphic generations, i.e. gametophytic and sporophytic generations. Gametophytic generation is the dominant phase of life cycle and in general the term 'plant body' is used to represent this phase.