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
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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