Plant Kingdom Test

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Plant Kingdom Test - 96

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Weekly Quiz Competition

Question 1
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Choose the correct answers from the alternatives given.
In the fern cycle, which of the following generation is dominant?

A
Haploid gametophyte

B
Diploid gametophyte

C
Haploid sporophyte

D
Diploid sporophyte

Solution

In the fern cycle, the sporophyte generation is dominant because the fern does not possess seeds, they only possess spores and thus diploid sporophyte is the dominant generation. In a fern, gametophytes are tiny and only live for a few days.
So, the correct answer is option D.
Question 2
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Porphyra and Dictyota contain the following pigments respectively

A
Phycoerythrin and fucoxanthin

B
Xanthophyll and $$\gamma$$-phycoerythrin

C
Chlorophyll d and chlorophyll b

D
Fucoxanthin and phycoerythrin

Solution

The algal phylum of Rhodophyta (also known as red algae) is considered as one of the oldest groups of algae; characterized by the presence of phycoerythrin (a red protein-pigment complex), carrageenan and phlorotannins. Porphyra is a cold water seaweed that which belongs to red algae phylum of division Rhodophyta.
Fucoxanthin is a brown seaweed pigment that is found in most brown algae, giving them a brown or olive-green colour. Dictyota belongs to a large order in brown algae (class Phaeophyceae).
So, the answer is A.
Question 3
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Spore dispersal in mosses occurs by-

A
Simple mechanism

B
Peristome teeth

C
Elaters

D
Elatophores
Solution
- In the moss capsule, dispersal of spores takes place through peristomial teeth.
- When the mature capsule begins to dry up the thin-walled cells of the annulus break and the operculum is thrown away.
- Dropping off the operculum is assisted by the outward hygroscopic movement of the underlying peristomial teeth.
- Due to this movement, slits between the inner thin-walled peristomial teeth become wider and spores escape gradually through these slits.
- Elaters are elastic filaments serving to disperse spores in liverworts.
- Elaterophores are tissues bearing elaters, found in some liverworts.
So, the correct answer is option B.
Question 4
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Commercial product "Agar " which is used in " ice creams" and to grow microbes in the laboratory is extracted from

A
Laminaria and Ploysiphonia

B
Porphyra and Sargassum

C
Gelidium and Gracilaria

D
Marchantia and Polytrichum

Solution

Agar is a dried or gel-like unbranched polysaccharide which accumulates in the cell walls of red algae. The main sources of agar are thalli of Gelidium, Gracilaria and Gigartina. For commercial purposes, it is derived primarily from Gelidium amansii.
Agar is used as a gelling and thickening agent in the food industry for the preparation of puddings, jams, jellies etc., as a stabilizer for mayonnaise and as an emulsifying agent in ice-creams.
So, the answer is C.
Question 5
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While studying a plant, you discover that it has chlorophyll, no xylem. Its multicellular sex organs are enclosed in a layer of jacket cells. Its gametophyte Stage is free living. The plant probability belongs to ____.

A
Chlorophyceae

B
Bryophyte

C
Pteridophyte

D
Gymnosperm
Solution
- The life cycle of higher plants is dominated by the sporophyte stage, with the gametophyte borne on the sporophyte.
- In ferns, the gametophyte is free-living and very distinct in structure from the diploid sporophyte.
- Pteridophytes also have their multicellular sex organs covered in the multicellular jacket layer.
So the correct answer is 'Pteridophyte'
Question 6
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The heterosporous pteriodophytes are-

A
Lycopodium and Pteris

B
Selaginella and Psilotum

C
Selaginella and Salvinia

D
Dryopteris and Adiantum

Solution

It is characterized by morphologically dissimilar spores produced from two types of sporangia, namely microsporangia that produce microspores, or male spores, and megasporangia that produce megaspores (macrospores), or female spores.
Example- Isoetes, Selaginella, Salvinia,Marselia etc
Hence the correct answer is C
Question 7
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Heterosporous pteridophytes show certain characteristics, which are precursors to the 'seed habit' in gymnosperms. One such characteristics is

A
presence of vascular tissues

B
external water required for fertilisation

C
presence of embryo stage

D
development of embryo inside the female gametophyte

Solution

Genera like Selaginella and Salvinia which produce two kinds of spores, are known as heterosporous. The megaspores and microspores germinate and give rise to female and male gametophytes, respectively.The female gametophytes in these plants are retained on the parent sporophytes for variable periods. The development of the zygotes into young embryos take place within the female gametophytes. This event Is the precursor to the seed habit which is considered as an important step in evolution.
Hence the correct option is D.
Question 8
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Match column I with column II and select the correct option from the codes given below.
Column I Column II
A. Pteris (i) Bryophyte
B. Cedrus (ii) Pteridophyte
C. Sonchus (iii) Gymnosperm
D. Marchantia (iv) Angiosperm

A
A-(ii), B-(iii), C-(iv), D-(i)

B
A-(ii), B-(i), C-(iv), D-(iii)

C
A-(i), B-(iii), C-(iv), D-(ii)

D
A-(iii), B-(iv), C-(ii), D-(i)

Solution

(A) Pteris - Pteridophyte
(B) Cedrus - Gymnosperm
(C) Sonchus - Angiosperm
(D) Marchantia - Bryophyte
So, the correct answer is (a).
Question 9
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Which of the following organisms requires a medium through which male gametes move?

A
Algae, Bryophyta and Gymnosperm

B
Pteridophyta, and Angiosperm

C
Bryophytea and Pteridophyta only

D
Algae, Bryophyta, and Pteridophyta
Solution
- In simple plants like algae, bryophytes, and pteridophytes, water serve as the medium through which gamete transfer takes place.
- A large number of male gametes fail to reach the female gametes.
- Thus, to compensate for the loss of male gametes during transport, organisms produce male gametes several thousand times the number of female gametes produced.
Question 10
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Which one of the following photosynthetic pigment is called bili proteins?

A
Chlorophyll a

B
Chlorophyll b

C
Phycobilin

D
Carotenoids

Solution

Green chromoproteins are called as biliproteins. It is a photosynthetic pigment found in many insects such as grasshopper. It is derived from the biliverdin, bile pigment. Phycobilin are found attached to the biliproteins.
Thus, the correct answer is 'Phycobilin.'

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Column I	Column II
A. Pteris	(i) Bryophyte
B. Cedrus	(ii) Pteridophyte
C. Sonchus	(iii) Gymnosperm
D. Marchantia	(iv) Angiosperm

Plant Kingdom Test - 96

Result

Plant Kingdom Test - 96

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SHARING IS CARING

Question 1

Haploid gametophyte

Diploid gametophyte

Haploid sporophyte

Diploid sporophyte

Solution

Question 2

Phycoerythrin and fucoxanthin

Xanthophyll and $$\gamma$$-phycoerythrin

Chlorophyll d and chlorophyll b

Fucoxanthin and phycoerythrin

Solution

Question 3

Simple mechanism

Peristome teeth

Elaters

Elatophores

Solution

Question 4

Laminaria and Ploysiphonia

Porphyra and Sargassum

Gelidium and Gracilaria

Marchantia and Polytrichum

Solution

Question 5

Chlorophyceae

Bryophyte

Pteridophyte

Gymnosperm

Solution

Question 6

Lycopodium and Pteris

Selaginella and Psilotum

Selaginella and Salvinia

Dryopteris and Adiantum

Solution

Question 7

presence of vascular tissues

external water required for fertilisation

presence of embryo stage

development of embryo inside the female gametophyte

Solution

Question 8

A-(ii), B-(iii), C-(iv), D-(i)

A-(ii), B-(i), C-(iv), D-(iii)

A-(i), B-(iii), C-(iv), D-(ii)

A-(iii), B-(iv), C-(ii), D-(i)

Solution

Question 9

Algae, Bryophyta and Gymnosperm

Pteridophyta, and Angiosperm

Bryophytea and Pteridophyta only

Algae, Bryophyta, and Pteridophyta

Solution

Question 10

Chlorophyll a

Chlorophyll b

Phycobilin

Carotenoids

Solution

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