Q651
Allen
NCERT BASED QUESTIONS
MCQ
Which group of plants is of less economic importance but have great ecological importance?
A.
Gymnosperms
B.
Angiosperms
C.
Bryophyta
D.
Pteridophyta
Q652
Allen
NCERT BASED QUESTIONS
MCQ
Normally in gymnosperms how many archegonia are produced in an ovule ?
A.
One
B.
Two
C.
Two or more
D.
Always one
Q653
Allen
NCERT BASED QUESTIONS
MCQ
Fusion between a large, nonmotile (static) female gamete and a smaller, motile male gamete is termed as :-
A.
Isogamy
B.
Oogamy
C.
Anisogamy
D.
Autogamy
Q654
Allen
NCERT BASED QUESTIONS
MCQ
Vascular plants producing integumented megasporangia but not ovary are :-
A.
Pteridophytes
B.
Gymnosperms
C.
Angiosperms
D.
Bryophytes
Q655
Allen
ANALYTICAL QUESTIONS
MCQ
Water is essential in Bryophyta :-
A.
For fertilization and homosporous nature
B.
Water should be filled in archegonium for fertilization
C.
Water is necessary for movement of sperm
D.
For dissemination spores
Q656
Allen
ANALYTICAL QUESTIONS
MCQ
Which statement is wrong for Cycas ?
A.
Xylem have vessels
B.
Male cones are well developed
C.
It has coralloid roots
D.
Circinate ptyxis/Circinate vernation
Q657
Allen
ANALYTICAL QUESTIONS
MCQ
Walking fern name of Adiantum is due to :-
A.
Dispersal by animals
B.
Reproduction by spores
C.
Vegetative reproduction
D.
Power of locomotion
Q658
Allen
ANALYTICAL QUESTIONS
MCQ
Which of the following statement is true for Bryophyta ?
A.
Along with water absorption roots also provide anchorage to plants
B.
Sporophyte is dominant
C.
Gametophyte is dominant and sporophyte is mostly parasitic
D.
Gametophyte is parasitic
Q659
Allen
ANALYTICAL QUESTIONS
MCQ
Cycas have two cotyledons but not included in angiosperms because of :-
A.
Naked ovules
B.
Seems like monocot
C.
Circinate ptyxis
D.
Compound leaves
Q660
Allen
ANALYTICAL QUESTIONS
MCQ
What is true for cyanobacteria?
A.
Oxygenic with nitrogenase
B.
Oxygenic without nitrogenase
C.
Non oxygenic with nitrogenase
D.
Non oxygenic without nitrogenase
Q661
Allen
ANALYTICAL QUESTIONS
MCQ
Vessels are found in :—
A.
All Angiosperms and some Gymnosperm
B.
Most of the Angiosperms and few Gymnosperms
C.
All Angiosperms, all Gymnosperms and some Pteridophyta
D.
All Pteridophyte
Q662
Allen
ANALYTICAL QUESTIONS
MCQ
Plants reproducing by spores such as mosses and ferns are grouped under the general term
A.
Cryptogams
B.
Bryophytes
C.
Sporophytes
D.
Thallophytes
Q663
Allen
ANALYTICAL QUESTIONS
MCQ
Chlorenchyma is known to develop in the :-
A.
Cytoplasm of Chlorella
B.
Mycelium of a green mould such as Aspergillus
C.
Spore capsule of a moss
D.
Pollen tube of Pinus
Q664
Allen
ANALYTICAL QUESTIONS
MCQ
Angiosperms have dominated the land flora primarily because of their :-
A.
Domestication by man
B.
Power of adaptability in diverse habitat
C.
Property of producing large number of seeds
D.
Nature of self pollination
Q665
Allen
ANALYTICAL QUESTIONS
MCQ
Top-shaped multiciliate male gametes, and the mature seed which bears only one embryo with two cotyledons, are characteristic features of :
A.
Cycads
B.
Gamopetalous angiosperms
C.
Conifers
D.
Polypetalous angiosperms
Q666
Allen
ANALYTICAL QUESTIONS
MCQ
Holdfast, stipe and frond constitutes the plant body in case of
A.
Rhodophyceae
B.
Chlorophyceae
C.
Phaeophyceae
D.
All of the above
Q667
Allen
ANALYTICAL QUESTIONS
MCQ
A plant shows thallus level of organization. It shows rhizoids and is haploid. It needs water to complete its life cycle because the male gametes are motile. Identify the group to which it belongs to
A.
Pteridophytes
B.
Gymnosperms
C.
Monocots
D.
Bryophytes
Q668
Allen
ANALYTICAL QUESTIONS
MCQ
A Prothallus is :-
A.
A structure in pteridophytes formed before the thallus develops
B.
A sporophytic free living structure formed in pteridophytes
C.
A gametophyte free living structure formed in pteridophytes
D.
A primitive structure formed after fertilization in pteridophytes
Q669
Allen
ANALYTICAL QUESTIONS
MCQ
Plants of this group are diploid and well adapted to extreme conditions. They grow bearing sporophylls in compact structures called cones. The group in reference is
A.
Monocots
B.
Dicots
C.
Pteridophytes
D.
Gymnosperms
Q670
Allen
ANALYTICAL QUESTIONS
MCQ
Protonema is
A.
Haploid and is found in mosses
B.
Diploid and is found in liverworts
C.
Diploid and is found in pteridophytes
D.
Haploid and is found in pteridophytes
Q671
Allen
ANALYTICAL QUESTIONS
MCQ
The giant Redwood tree (Sequoia sempervirens) is a/an
A.
Angiosperm
B.
Free fern
C.
Pteridophyte
D.
Gymnosperm
Q672
Allen
ANALYTICAL QUESTIONS
MCQ
Zoospores (motile) are formed in :-
A.
Sexual reproduction
B.
Asexual reproduction
C.
Vegetative reproduction
D.
Sexual and asexual both
Q673
Allen
ANALYTICAL QUESTIONS
MCQ
Binary fission is found in :-
A.
Multicellular algae
B.
Unicellular algae
C.
Multicellular algae and unicellular algae
D.
None of these
Q674
Allen
ANALYTICAL QUESTIONS
MCQ
Hypnospores are formed in :-
A.
Favourable condition
B.
Unfavourable condition
C.
Favourable condition and Unfavourable condition
D.
None of these
Q675
Allen
ANALYTICAL QUESTIONS
MCQ
At least how much amount of carbon dioxide is fixed by algae on earth?
A.
½ of total carbon dioxide
B.
½ of total carbon dioxide
C.
% of total carbon dioxide
D.
Small quantity of total carbon di oxide