Tag: botany

Quizzes (264) Questions (5276)

Questions Related to botany

Multiple choice botany kingdom plantae uses of bryophytes introduction to bryophytes cryptogams

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?

  1. $1, 2, 3$ and $4$
  2. $1, 2$ and $4$
  3. $1, 3$ and $4$
  4. $2$ and $3$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

All the listed pairs are standard descriptions of sporophyte characteristics in various bryophytes: Marchantia (irregular), Scapania (two halves), Anthoceros (bulbous foot), and Sphagnum (no seta).

Multiple choice botany kingdom plantae uses of bryophytes introduction to bryophytes cryptogams

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

  1. Bryophytes

  2. Pteridophytes

  3. Algae

  4. Lichens
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Reindeer moss and Iceland moss are not true mosses despite their common names. They are actually composite organisms formed by a symbiotic association between fungi and algae, which classifies them as lichens.

Multiple choice botany kingdom plantae uses of bryophytes introduction to bryophytes cryptogams

Funaria is a moss.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
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.

Multiple choice botany kingdom plantae uses of bryophytes introduction to bryophytes cryptogams

Plant body of Funaria is ______________.

  1. Completely sporophyte

  2. Completely gametophyte

  3. Predominantly sporophyte with gametophyte

  4. Predominantly gametophyte with sporophyte
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The main, independent, and photosynthetic plant body of Funaria and other mosses is the haploid gametophyte. The sporophyte is physically attached to and nutritionally dependent on the gametophyte, making the plant body predominantly gametophytic.

Multiple choice botany kingdom plantae uses of bryophytes introduction to bryophytes cryptogams

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

  1. 10 chromosomes

  2. 5 chromosomes

  3. 15 chromosomes

  4. 20 chromosomes
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The leaf of Funaria belongs to the haploid gametophytic generation, meaning the leaf cells are haploid (n = 5). The primary protonema develops directly from the germination of a haploid spore, so its cells are also haploid and will contain the same number of chromosomes, which is 5.

Multiple choice botany kingdom plantae uses of bryophytes introduction to bryophytes cryptogams

Which of the following statements is incorrect?

  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.
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

Multiple choice botany kingdom plantae uses of bryophytes introduction to bryophytes cryptogams

Funaria requires water because ___________________.

  1. Fertilisation occurs in water only

  2. Funaria is a hydrophyte

  3. Plants need water for gametogenesis

  4. Gametangia cannot develop without water
Reveal answer Fill a bubble to check yourself
A Correct answer
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.

Multiple choice botany kingdom plantae uses of bryophytes introduction to bryophytes cryptogams

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

  1. gametophyte

  2. sporophyte

  3. seta

  4. sporogonium
Reveal answer Fill a bubble to check yourself
A Correct answer
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.