CBSE Questions for Class 11 Medical Biology Plant Kingdom Quiz 15 - MCQExams.com

Read the statements given below and identify the correct ones:
(i) Chemotaxonomy is based on the similarities and dissimilarities in the structure of certain chemical compounds among the organism.
(ii) Karyotaxonomy is based on the nuclear and chromosomal studies.
(iii) Term taxonomy was coined by Linnaeus.
(iv) ICBN is for the nomenclature of bacteria.
  • (i), (ii) and (iii) are correct.
  • (i) and (ii) are correct.
  • (iii) and (iv) are correct.
  • (i) and (iii) are correct.
Cryptogamae means those with conspicuous reproductive organs.
  • True
  • False
Plants with well-differentiated reproductive tissues that ultimately make seeds are called Pteridophytes.
  • True
  • False
The plants of the Angiosperm group bear naked seeds.
  • True
  • False
Which component present in blue-green algae?
  • Cyanocobalamin
  • Phycocyanin
  • Chlorophyll
  • Cartenoids
Plants of this group are diploid and well adapted to extreme conditions. They have compact structures are called cones. The group in reference is 
  • Monocots
  • Dicots
  • Pteridophytes
  • Gymnosperms
Choose the correct option with respect to the statements given below.
Statement 1- The cell walls of red algae are chemically made of Cellulose and algin.
Statement 2 - Extracts from some species of red algae are used in the preparation of jellies and ice creams.
  • Both statements are correct.
  • Both statements are incorrect.
  • Statement 1 is correct but statement 2 is incorrect.
  • Statement 1 is incorrect but statement 2 is correct.
In the following, which one is the example of Bryophyta that has elaborate mechanism of spore dispersal-
  • Polysiphonia
  • Marchantia
  • Polytrichum
  • Dryopteris
Identify the organism based on the following descriptions:
1) It belongs to Thallophyta and is a unicellular alga.
2) It is often considered a superfood due to its high protein and antioxidant content.
3) This organism is also used as a food supplement by many astronauts.
  • Volvox
  • Chlorella
  • Spirogyra
  • Porphyra
Which of the following are examples of heterosporous Pteridophytes?
  • $$Pteris, Lycopodium, Adiantum, Selaginella  $$
  • $$Selaginella, Salvinia, Marsilea, Azolla$$
  • $$Dryopteris, Adiantum, Psilotum, Pteris.$$
  • $$Nephrolepis, Adiantum, Pteris, Equisetum$$.
Bryophytes emerged from aquatic ancestors can be proved by which of the following characteristics?
  • Thalloid plant structure
  • Algae like protonema
  • Occurrence of many aquatic bryophyte species
  • Flagellated male gametes
Which of the following differences between Angiosperms and Gymnosperms is/are correct?
AngiospermsGymnosperms
a.Endosperm is diploidEndosperm is haploid
b.Microspores are formed in antherMicrospores are formed in Microsporangia
c.Ovules are usually bitegmicOvules are usually unitegmic
d.Scale leaves presentScale leaves absent
  • a, d are correct
  • b, c are correct
  • c and d are correct
  • Only c is correct
Which among the following statement(s) is correct for haplodiplontic life cycle of plants?
  • It is exhibited by bryophytes and pteridophytes
  • Both haploid and diploid phases are equally dominant
  • Dominant phases may differ between haploid gametophyte or diploid sporophyte
  • Exhibited by some algae like Ectocarpus, Polysiphonia and Kelp
External fertilization occurs in majority of
  • Algae
  • Fungi
  • Liverworts
  • Mosses
Rhodophyceae is red coloured due to
  • Xanthophyll
  • Carotenoids
  • Phycoerythrin
  • Phycocyanin
Red tide is caused by
  • Noctiluca
  • Plasmodium
  • Algal blooms
  • All of the above
Algae which forms a motile colony is
  • Volvox
  • Nostoc
  • Spirogyra
  • Chlamydomonas
Which of the following is not correctly matched?
  • Chlamydomonas - Unicellular flagellated.
  • Laminaria - Flattened leaf like thallus.
  • Chlorella - Unicellular flagellated.
  • Spirogyra - Filamentous structure.
  • Volvox - Colonial, non-flagellated.
Algae are in the same major group of plants, so are the
  • Mosses
  • Liverworts
  • Fungi
  • Ferns
In the diagram given above some of algae  have been  labelled as A,' B', 'C', 'D', and 'E'. These algae are respectively identified as

55332_4bf392d18df14fef87d61f68b3966b4c.png
  • Dictyota, Polysiphonia, Porphyra, Fucus and Laminaria
  • Porphyra, Dictyota, Laminaria, Fucus and Polysiphonia
  • Dictyota, Polysiphonia, Porphyra, Laminaria and Fucus
  • FucusPorphyra, Dictyota, Polysiphonia and Laminaria
Which of the following occurs both in fresh as well as in marine water?
  • Oedogonium
  • Cladophora
  • Brown algae 
  • None of the above
More than one pyrenoid are present in
  • Ulothrix
  • Spirogyra
  • Oedogonium
  • All of the above
Comparable to angiosperms, which of the following algae exhibits diplontic life cycle?
  • Spirogyra
  • Ectocarpus
  • Polysiphonia
  • Fucus
Pyrenoids are made up of
  • Core of starch surrounded by sheath of protein.
  • Core of protein surrounded by fatty sheath.
  • Proteinaceous centre and starchy sheath.
  • Core of nucleic acid surrounded by protein sheath.
Marine algae flourished well during which of the following period?
  • Triassic
  • Devonian
  • Permian
  • Ordovician
In the Chlorophyta, the reserve food of protein surrounded by starch, form a compact body termed as 
  • Paramylon
  • Pyrenoid
  • Volutin
  • Eye spot
Isomorphic alternation of generations is found in
  • Oedogonium
  • Chara
  • Vaucheria
  • Ectocarpus
Red eye spot containing haematochrome is meant for
  • Photosynthesis
  • Respiration
  • Photoreception
  • None of the above
Smallest plant which contain green pigment such as higher green plant is
  • Schizomycetes
  • Rhodophyceae
  • Chlorophyceae
  • Phyaeophyceae
One of the following can flourish at high temperature of 87$$^o$$C.
  • Volvox
  • Spirogyra
  • Ulothrix
  • None of the above
The element present in thyroxin is obtained from
  • Laminaria
  • Polysiphonia
  • Porphyro
  • Gelldium
Which of the following is obtained from algae?
  • Butter
  • Chocolate
  • Wax
  • Carrageenan
During unfavourable conditions Chlamydomonas  forms a colonial aggregate called
  • Palmitate stage
  • Palmella stage
  • Endospore stage
  • Cyst stage
Eusporangiate fern is produced from
  • Group of sporangial initial cell
  • Single initial cell
  • Epidermal cells
  • Hypodermal cells
Which one of the following is a true moss?
  • Club moss
  • Reindeer moss
  • Irish moss
  • Bog moss
In which of the following pyrenoids are present?
  • Marchantia
  • Riccia
  • Anthoceros
  • All of the above
Batrachospermum is found in
  • Marine water
  • Fresh water
  • Tree
  • Arctic zone
Dichotomous branching is found in
  • Fern
  • Funaria
  • Liverworts
  • Polytrichum
Select  the correct match from the options given below.
(A)
Phaeophyceae
-
Mannitol
(B)
Rhodophyceae
-
Dictyota
(C)
Chlorophyceae
-
Non-motile gametes
(D)
Rhodophyceae
-
r-Phycoerythrin
  • A, B and C
  • B, C and D
  • A and C
  • C and D
  • A and D
Choose the wrong pair from the following.
  • Hepaticopsida - Marchantia
  • Lycopsida - Selaginella
  • Bryopsida - Anthoceros
  • Pteropsida - Dryopteris
  • Sphenopsida - Equisetum
Agranal chloroplast are found in
  • Bryophytes
  • Gymnosperms
  • Green algae
  • Angiosperms
Sea weeds are important source of
  • Chlorine
  • Fluorine
  • Iodine
  • Bromine
Sterile portions of sporophylls of Cycas and Pinus are
  • Paraphyses
  • Apophysis
  • Hypophysis
  • Epiphyses
Non motile, greatly thickened asexual spore in Chlamydomonas is known as
  • Zoospore
  • Akinete
  • Hypnospore
  • Endospores
Fern character in Cycas is
  • Coralloid roots
  • Tap root system
  • Circinate vernation/ptyxis
  • Reticulate venation
There is symbiotic algae in the secretory cells of Hydra. It is
  • Nostoc
  • Anabaena
  • Zoochlorellae
  • All of the above
The alga, Chara is called as stone wort because its body has
  • CaCO$$_3$$
  • CaC$$_2$$O$$_4$$
  • CaHCO$$_3$$
  • CaCl$$_2$$
Which of the following plant groups lack lignified cell walls in its cellular structure?

  • Bryophytes
  • Halophytes
  • Pteridophytes
  • Spermatophytes
In Cycas, the ovules are attached to megasporophyll
  • Laterally
  • Dorsally
  • Ventrally
  • Apically
Which of the following is a common character shown by both bryophytes and pteri-dophytes?

  • Semi-parasitic gametophytic stage.
  • Presence of vascular tissues.
  • Independent gametophytic and sporophytic generations.
  • Water is essential for fertilization.
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