Solving the Plant Kingdom Multiple Choice Questions of Class 11 Biology Chapter 3 MCQ can be of extreme help as you will be aware of all the concepts. These MCQ Questions on Plant Kingdom Class 11 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Have a glance at the MCQ of Chapter 3 Biology Class 11 and cross-check your answers during preparation.

I. Select the correct answer of the following questions:

Question 1.
Agar is obtained from
(a) Laminaria
(b) Porphyra
(c) Sargassum
(d) Gelidium

Answer

Answer: (d) Gelidium

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Question 2.
Red algae resemble blue green algae in the presence of
(a) Similar cell wall constitutents
(b) Phycobilins
(c) Similar reserve food
(d) Similar mode of reproduction

Answer

Answer: (b) Phycobilins

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Question 3.
The colour of brown algae is due to
(a) Phycoerythrin
(b) Phycocyonin
(c) Fucoxanthin
(d) Carotenes

Answer

Answer: (c) Fucoxanthin.

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Question 4.
All algae possess
(a) Chlorophyll (b) and carotenes
(b) Chlorophyll (a) and corotenes
(c) Chlorophyll (a) and chlorophyll (c)
(d) Chlorophyll (a) and chlorophyll (b)

Answer

Answer: (b) Chlorophyll (a) and carotenes.

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Question 5.
Flagellate cells are absent in
(a) Brown algae
(b) Red algae
(c) Green algae
(d) Chlamydomonas.

Answer

Answer: (b) Red algae.

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Question 6.
Sex organs are unicellular and non-jacketed in
(a) Algae
(b) Bryophyta
(c) Gymnosperms
(d) Pteridophyta.

Answer

Answer: (a) Algae.

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Question 7.
In green algae meiosis occurs in
(a) Gametangia
(b) Sporangia
(jc) Zoospore
(d) Zygospore.

Answer

Answer: (d) Zygospore.

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Question 8.
Protonema stage is found in
(a) Green algae
(b) Liveworts
(c) Ferns
(d) Mosses.

Answer

Answer: (d) Mosses.

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Question 9.
Pyrenoids are present in
(a) Brown algae
(b) Red algae
(c) Green algae
(d) Blue green algae.

Answer

Answer: (c) Green algae.

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Question 10.
Sporophyte of riccia is made of
(a) Capsule only
(b) Foot, seta and capsule
(c) Seta and capsule
(d) Foot and capsule.

Answer

Answer: (a) Capsule only.

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Question 11.
A fern differs from a bryophyte in having.
(a) Parasitic sporophyte
(b) Independent gametaphyte
(c) Independent sporophyte
(d) Parasitic gametophyte.

Answer

Answer: (c) Independent spororphyte.

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Question 12.
Seedless vascular plants are
(a) Mosses
(b) Liver worts
(c) Ferns
(d) Cycads.

Answer

Answer: (c) Ferms.

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Question 13.
Gymnosperms are characterised by
(a) Naked ovules
(b) Large leaves
(c) Scale leaves
(d) Ciliated sperms.

Answer

Answer: (a) Naked ovules.

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Question 14.
Which of these algae is very rich in protein.
(a) Ulothrix
(b) Oscillatoria
(c) Chlorella
(d) Spirogyra.

Answer

Answer: (c) Chlorella.

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Question 15.
Multicelluilar branched rhizoids and leafy gametophytes are found in
(a) All bryophytes
(b) Some bryophytes
(c) Some pteridophytes
(d) All pteridophytes

Answer

Answer: (b) Some bryophytes.

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Question 16.
Life cyle of Pinus is
(a) Diplontic
(b) Haplontic
(c) Diplobiontic
(d) Diplohaplontic.

Answer

Answer: (d) Diplohaplontic.

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Question 17.
Bryophytes can be distinguished from algae because they
(a) are thalioid forms
(b) contain chloroplast in their cells
(c) do not have conducting tissue
(d) possess archegonia with outer layer of sterile cells.

Answer

Answer: (d) Possess archegonia with outer layer of sterile cells.

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Question 18.
Bryophytes are dependent on water because
(a) the sperms can easily reach upto egg in the archegonium.
(b) water is essential for their vegetative propagation.
(c) water is essential for fertilisation for their homosporous nature.
(d) archegonium has to remain filled with water for fertilisation.

Answer

Answer: (a) The sperms can easily reach upto egg in archegonium.

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Question 19.
A marine angiosperm is
(a) Hydrilla
(b) Zostera
(c) Vallisnaria
(d) Ceratopyllus.

Answer

Answer: (b) Zostera.

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Question 20.
The largest alga is
(a) Sargassum
(b) Laminaria
(c) Macrocystis
(d) Fucus

Answer

Answer: (c) Macrocystis

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II. Fill in the blanks

Question 1.
In this chapter we will describe ………….. under algae, …………. Pteridophytes, ………….. and angiosperms.

Answer

Answer: Plantae, Bryo- phytes, Gymnosperms

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Question 2.
Such systems were …………. because they separated closely related species since they were based on few characteristics.

Answer

Answer: artificial

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Question 3.
At prasent …………….. based on evoiutionory relationships between the various organisms are acceptable.

Answer

Answer: Phylogenetic classification systems

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Question 4.
Fusion between one large, …………… (static) female gemete and a smaller, motile male gamete is termed ………..

Answer

Answer: non-motile, oogamous

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Question 5.
Certain marine brown and red algae produce large amounts of hydrocolloids (water holding substances) e.g. ……….. (of brown algae) and carrageen (of red algae) are used commercially.

Answer

Answer: algin

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Question 6.
The algae are divided into three main classes: ……….., ………….. and ………….

Answer

Answer: Chlorophyceae, Phaeophyceae, Rhodophyceae

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Question 7.
The plant body of ………….. is more differentiated than that of …………..

Answer

Answer: Bryophytes, algae

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Question 8.
The predominant stage of the life cycle of a moss is the gametophyte which consists of …………

Answer

Answer: two stages.

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Question 9.
Each of the cells of an ………….. are haploid.

Answer

Answer: embryo-scarsac

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Question 10.
The ……………. and …………… degenerate after fertilisation.

Answer

Answer: Synergids, antipodals

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Question 11.
The dominant, photosynthetic phase in such plants is the …………… the gametophyte. This kind of life-cycle is termed as ………..

Answer

Answer: free-living, haplontic

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Question 12.
The gameto phytic phase is represented by the single to few celled haploid gametophyte. This kind of life-cycle is termed as …………..

Answer

Answer: Diplontic

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Question 13.
The diploid sporophyte is represented by a dominant, independent, ……….., vascular plant body.

Answer

Answer: photosynthetic

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III. Mark the statements True (T) or False (F)

Question 1.
Numerical Taxonomy which is now easily carried out using computer is based on ail the observable charateristics.

Answer

Answer: True.

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Question 2.
The algae reproduce by only vegetative methods.

Answer

Answer: False.

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Question 3.
At least a half of the total carbon-dioxide fixation on earth is carried out by algae through photosyntheses.

Answer

Answer: True.

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Question 4.
Algae are of paramount importance as primary producers of energy-rich compounds which form the basis of the food cycles of all aquatic animals.

Answer

Answer: True

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Question 5.
The algae are divided into two main classes: Rhodophyceae and chlorophyceae.

Answer

Answer: False.

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Question 6.
Majority of the red algae are found on land with greater concentrations found in the warmer areas.

Answer

Answer: False.

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Question 7.
The bryophytes are divided into: liverworts and mosses.

Answer

Answer: True.

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Question 8.
The liverworts grow usually in moist shady habitats such as banks of streams, marshy ground, damp soil, bark of trees and deep in the woods.

Answer

Answer: True.

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Question 9.
The first stage is the leafy stage which develops from the secondary protonema as a lateral bud.

Answer

Answer: False.

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Question 10.
Water is required for transfer of antherozoids— the male gametes released from the antheridia, to the mouth of archegonium.

Answer

Answer: True.

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Question 11.
Unlike bryophytes and pteridophytes, in gymnosperms the male and the female gametophytes have independent free-living existence.

Answer

Answer: False.

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Question 12.
Angiosperms provide us with food, fodder, fuel, medicines and several other commercially important products. They are divided into two classes: the dicotyledons and the monocotyledons.

Answer

Answer: True.

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IV. Match the items of column I with the items of column II

Column I	Column II
a. Most algal genera are haplontic	1. Primary endosperm nucleus
b. In plants both haploid and diploid cell.	2. Some of them such as Ectocaspus polysiphonia
c. PEN	3. Can divide by mitosis
d. The involvement of two fusions, this event is termed as double fertilisation	4. Is also retained within mega-sporangium.
e. Each embryosac has a 3 celled egg appartus	5. or female strobili
f. The multicellular female gametophyte	6. consists of two stages: psotonema stage, leafy stage
g. A multicellular female gametophyte that	7. multicelluar. The male sex organ is called ontheridium.
h. Megasporangia are called macrosporanagiate	8. of the plant kingdom, because these plants can live on soil.
i. The gametophyte bears male and female sex organs called	9. an event unique to angiospe rms.
j. Formation of specialised structures	10. amylopetin and glycogen in one egg cell and two syner
k. The bryophytes are divided into	11. gids 3 antipodal cells and two polar nuclei structure.
l. The sex organs in bryophytes are	12. bears two or.more archegonia or female sex organs.
m. the predominant stage of the life	13. called gemmae.
n. Bryophytes are also called amphibians	14. antheridia and archegonia
o. The food is stored as floridean starch which is very similar to.	15. liverworts and mosses.

Answer

Answer:

Column I	Column II
a. Most algal genera are haplontic	1. Primary endosperm nucleus
b. In plants both haploid and diploid cell.	2. Some of them such as Ectocaspus polysiphonia
c. PEN	3. Can divide by mitosis
d. The involvement of two fusions, this event is termed as double fertilisation	4. Is also retained within mega-sporangium.
e. Each embryosac has a 3 celled egg appartus	5. or female strobili
f. The multicellular female gametophyte	6. consists of two stages: psotonema stage, leafy stage
g. A multicellular female gametophyte that	7. multicelluar. The male sex organ is called ontheridium.
h. Megasporangia are called macrosporanagiate	8. of the plant kingdom, because these plants can live on soil.
i. The gametophyte bears male and female sex organs called	9. an event unique to angiospe rms.
j. Formation of specialised structures	10. amylopetin and glycogen in one egg cell and two syner
k. The bryophytes are divided into	11. gids 3 antipodal cells and two polar nuclei structure.
l. The sex organs in bryophytes are	12. bears two or.more archegonia or female sex organs.
m. the predominant stage of the life	13. called gemmae.
n. Bryophytes are also called amphibians	14. antheridia and archegonia
o. The food is stored as floridean starch which is very similar to.	15. liverworts and mosses.

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