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CBSE class 11 Biology Quiz | CBSE class 11 Biology Multiple Choice Questions(MCQs) & Answers

(1) Mycelium is a term used for:
[A] Mass of hyphae
[B] Zoospores
[C] Mass of sporangia
[D] Mass of spores
Answer: Mass of hyphae
(2) Euglena is an animal because it lacks:
[A] Cell wall
[B] Cell membrane
[C] Chloroplast
[D] Nucleus
Answer: Cell wall

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(3) The number of chromosomes in the cells of the Sporophyte plant body of Ulva is:
[A] Diploid
[B] Triploid
[C] Teraploid
[D] Monoploid
Answer: Diploid
(4) The chromosome number in the gametes of Ulva is:
[A] Monoploid
[B] Teraploid
[C] Triploid
[D] Diploid
Answer: Monoploid
(5) Sporophyte generation produces:
[A] Embryo
[B] Zygote
[C] Spores
[D] Gametes
Answer: Spores
(6) Mycorrhizal association is:
[A] Chlorophytic
[B] Symbiotic
[C] Saprophytic
[D] Parasitic
Answer: Symbiotic
(7) Mycorrhiza is association of:
[A] Root-fungus
[B] Stem-fungus
[C] Alga-fungus
[D] Bacteria-fungus
Answer: Root-fungus
(8) Sexual reproduction in which small male gamete is motile while the large female gamete is immotile is called:
[A] Isogamy
[B] Anisogamy
[C] Oogamy
[D] Karyogamy
Answer: Karyogamy
(9) Ulva is:
[A] Unicellular
[B] Filamentous
[C] Tubular
[D] None of these
Answer: Unicellular
(10) Which of the following is a human disease caused by Fungi?
[A] Powdery mildew
[B] Ring worm
[C] Rusts
[D] Downy mildew
Answer: Ring worm
(11) Smut is caused by:
[A] Fungi
[B] Plasmodium
[C] Virus
[D] Bacteria
Answer: Fungi
(12) Which of the following is used in cheese production:
[A] Neurospora
[B] Penecillium
[C] Rhizopus
[D] Amanita
Answer: Penecillium
(13) The spores of Rhizopus are:
[A] Non-motile
[B] Flagellate
[C] Naked
[D] Motile
Answer: Non-motile
(14) Rhizopus is:
[A] Saprophyte
[B] Tracheophyte
[C] Sporophyte 3
[D] Parasite
Answer: Saprophyte
(15) The hyphae of Rhizopus are :
[A] Non-septate
[B] Septate
[C] Uninucleate
[D] None of these
Answer: Non-septate
(16) Cellulose is absent in the cell wall of most:
[A] Bryophytes
[B] Pteredophytes
[C] Fungi
[D] Algae
Answer: Fungi
(17) In majority of the Fungi the chief component of the cell wall is:
[A] Chitin
[B] Protein
[C] Lignin
[D] Cellulose
Answer: Chitin
(18) Slimy capsule of bacteria is made by:
[A] polysaccharide
[B] protein
[C] sucrose
[D] lipid
Answer: polysaccharide
(19) Which of the following is not true of organisms in the kingdom Monera ?
[A] they reproduce by mitosis
[B] no cellulose cell wall
[C] no nuclear envelop
[D] have prokaryotic cellular organization
Answer: they reproduce by mitosis
(20) When a bacteriophage, in its lytic phase carries some of the bacterium’s partially digested chromosome with it to another host cell, the process is called:
[A] transformation
[B] transduction
[C] transportation
[D] conjugation
Answer: transduction

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