CBSE Class 11 Biology Plant Kingdom MCQs

Question : Floridean starch is found in
a) Rhodophyceae
b) Chlorophyceae
c) Phaeophyceae
d) Cyanophyceae
Answer : A

Question : Peat moss is another name of
a) Sphagnum
b) Riccia
c) Marchantia
d) Dryopteris
Answer : B

Question : Pteridophytes differ from mosses/bryophytes in possessing
a) well developed vascular system
b) independent gametophyte
c) archegonia structure
d) flagellate spermatozoids
Answer : A

Question : Most plants are green in colour because
a) chlorophyll is least effective in absorbing green light.
b) green light allows maximum photosynthesis.
c) green light is the most effective wavelength region of the visible spectrum in sunlight for photosynthesis.
d) the atmosphere filters out all the colours of the visible light spectrum except green.
Answer : A

Question : In Chlorophyceae, sexual reproduction occurs by
a) isogamy, anisogamy and oogamy
b) oogamy only
c) anisogamy and oogamy
d) isogamy and anisogamy
Answer : A

Question : A water fern which is used as a green manure in rice fields is
a) Azolla
b) Mucor
c) Salvinia
d) Aspergillus
Answer : A

Question : The largest flower found is known as
a) Rafflesia
b) Musa
c) Cauliflower
d) Tecoma
Answer : B

Question : In fern, spores are formed in
a) sporangium
b) archegonium
c) oogonium
d) stomium
Answer : A

Question : Laminaria (kelp) and Fucus (rock weed) are the examples of
a) brown algae
b) green algae
c) golden brown algae
d) red algae
Answer : A

Question : People recovering from long illness are often advised to include the alga Spirulina in their diet because it
a) is rich in proteins
b) has antibiotic properties
c) restores the intestinal microflora
d) makes the food easy to digest
Answer : is rich in proteins

Question : Which of the following cell organelle remains enveloped by a single unit membrane?
a) Lysosomes
b) Chloroplast
c) Mitochondria
d) Nucleus
Answer : A

Question : Algae have cell wall made up of
a) cellulose, galactans and mannans
b) hemicellulose, pectins and proteins
c) pectins, cellulose and proteins
d) cellulose, hemicellulose and pectins
Answer : B

Question : Which plays an important role in the dispersal of spores in Funaria?
a) Peristome and annulus
b) Sporogonium
c) Capsule
d) Operculum
Answer : A

Question : Which one of the following is a correct statement ?
a) Origin of seed habit can be traced in pteridophytes
b) Antheridiophores and archegoniophores are present in pteridophytes
c) In gymnosperms female gametophyte is free-living
d) None of these
Answer : A

Question : What is the similarity between gymnosperms and angiosperms ?
a) Both have leaves, stem and roots
b) Origin of ovule and seed is similar in both
c) Endosperm is formed before fertilization in both
d) Phloem of both have companian cells
Answer : A

Question : In Chlorophyceae, sexual reproduction occurs by
a) isogamy, anisogamy and oogamy
b) oogamy only
c) anisogamy and oogamy
d) isogamy and anisogamy
Answer : B

Question : In gymnosperms, the ovule is naked because
a) ovary wall is absent
b) perianth is absent
c) integuments are absent
d) nucellus is absent
Answer : A

Question : How many meiotic division would be required to produce 101 female gametophytes in an angiosperm?
a) 101
b) 127
c) 26
d) None of these
Answer : A

Question : Which one of the following is the major difference between mosses and ferns ?
a) Sporophytes of ferns live much longer as compared to the sporophytes of mosses.
b) Vascular bundles of ferns show xylem vessels while those of mosses lack it
c) Mosses are facultative aerobes while ferns are obligate aerobes.
d) Ferns lack alternation of generation while mosses show the same.
Answer : A

Question : In sexual life cycle of Agaricus, dikaryotization (n + n) is brought about by
a) Fusion of vegetative cells of different genotypes
b) Somatogamy between basidiospores
c) Fusion of motile gametes
d) Fusion of male and female sex organs
Answer : A

Question : In Pinus / gymnosperms, the haploid structure are 
a) megaspore, endosperm and embryo
b) megaspore, pollen grain and endosperm
c) megaspore, integument and root
d) pollen grain, leaf and root
Answer : B