CBSE Class 11 Biology Biological Classification MCQs Set 04

Question. Passive food ingestion in Amoeba is known as
a) Import
b) Invagination
c) Circumfluence
d) Circumvallation
Answer: a

Question. Diphtheria is caused by:
a) Diplococcus
b) Bacillus
c) Corynebacterium
d) Vibrio
Answer: c

Question. Seeding ponds with Gambusia fish is an example of:
a) Parasitism
b) Biocontrol
c) Hyperparasitism
d) Both Parasitism and Biocontrol
Answer: b

Question. Red tides are caused by
a) Red algae
b) Brown algae
c) Golden algae
d) Fire algae
Answer: a

Question. Bacteria lack alternation of generations because there is:
a) No exchange of genetic material
b) Distinct chromosomes are absent
c) No conjugation
d) Neither syngamy nor reduction division
Answer: d

Question. Protists obtain food as:
a) Holotrophs
b) Photosynthesisers
c) Chemosynthesisers
d) Photosynthesisers, symbionts and holotrophs
Answer: d

Question. Currently bacteria are included in:
a) Thallophyta
b) Monera
c) Mycota
d) Protista
Answer: b

Question. Primitive relatives of animals:
a) Protozoans
b) Bacteria
c) Algae
d) Humans
Answer: a

Question. Murein does not occur in the wall of:
a) Blue green algae
b) Nostoc
c) Eubacteria
d) Diatoms
Answer: d

Question. Certain stages of Plasmodium vivax may survive for a long time in liver of man in dormant state. On reactivation they enter into cycle, this stage is known as:
a) Exoerythocytic schizogony
b) Cycle of Ross
c) Gametogony
d) Erythrocytic schizogony
Answer: d

Question. Euglena stores food as:
a) Paramylum
b) Starch
c) Fat
d) Protein
Answer: a

Question. In cyanophyceae, flagella are:
a) Present in zoospores only
b) Present
c) Present in gamete stage only
d) Absent
Answer: d

Question. Nutrition in Amoeba is:
a) Holophytic
b) Holozoic
c) Parasitic
d) Saprobic
Answer: b

Question. What is not true of Euglena?
a) Presence of cellulose cell wall
b) Presence of proteinaceous pellicle
c) Presence of chlorophyll
d) Presence of flagellum
Answer: a

Question. When a fresh water protozoan, possessing a contractile vacuole is placed in a glass containing marine water, the vacuole will?
a) Disappear
b) Increase in number
c) Increase in size
d) Decrease in size
Answer: d

Question. Streptococcus is used in preparation of:
a) Wine
b) Cheese
c) Idli
d) Bread
Answer: b

Question. Spraying kerosene on stagnant water shall kill Anopheles due to:
a) Burning of body wall
b) Prevention of spiracle to come in contact with air
c) Diffusion into body
d) Entry into and blocking of respiratory tract
Answer: d

Question. A Dutch scientist a)V. Leeuwenhoeck discovered bacteria for the first time in:
a) Soil
b) Rain water
c) Air
d) Garden soil
Answer: b

Question. Entamoeba histolytica excretes through:
a) Food vacuole
b) Contractile vacuole
c) General surface
d) Malpighian tubules
Answer: b

Question. Infection of Entamoeba histolytica is prevented by:
a) Uncontaminated food
b) Avoiding clothes of patient
c) Avoiding kissing
d) None of the above
Answer: a

Question. Lichens are very good pollution indicator because they are sensitive to
a) Sulfur trioxide
b) Sulfur dioxide
c) Carbon dioxide
d) Global warming
Answer: b

Question. Coenocytic hyphae is found in:
a) Rhizopus
b) Mucor
c) Saprolignia
d) All of the options
Answer: d

Question. Leishmania tropica produces:
a) Oriental sores
b) Kala-azar
c) Dysentery
d) Sleeping sickness
Answer: a

Question. Drosophila of the plant kingdom is:
a) Alternaria
b) Aspergillus
c) Neurospora
d) Albugo
Answer: c

Question. Saprolegnea belongs to:
a) Phycomycetes
b) Ascomycetes
c) Basidiomycetes
d) Deuteromycetes
Answer: a

Question. Match the following:
a) Leishmania donovani – 3. Kala-azar
b) Wuchereria bancrofti – 5. Filariasis
c) Trypanosoma gambiense – 4. Sleeping sickness
d) Entamoeba histolytica – 2. Amoebiasis
a) A-3 B-4 C-5 D-1
b) A-3 B-5 C-2 D-1
c) A-4 B-3 C-2 D-1
d) A-3 B-5 C-4 D-2
Answer: d

Question. Reverse transcriptase is:
a) RNA dependent DNA polymerase
b) DNA dependent RNA polymerase
c) DNA dependent DNA polymerase
d) RNA dependent RNA polymerase
Answer: a

Question. Genetic material of bacteriophage:
a) Double stranded DNA
b) Single stranded RNA
c) Double stranded RNA
d) Single stranded DNA
Answer: a

Question. Truffels are the member of class:
a) Basidiomycetes
b) Ascomycetes
c) Deuteromycetes
d) Phycomycetes
Answer: b

Question. T-bacteriophages possess:
a) Rounded shape
b) Irregular shape
c) Tadpole shape
d) Rhomboid shape
Answer: c

Question. Those viruses infect plants have which type of genetic material?
a) Single stranded DNA
b) Single stranded RNA
c) Double stranded RNA
d) Double stranded DNA
Answer: b

Question. The members of which of the following are litter decomposers?
a) Deuteromycetes
b) Ascomycetes
c) Basidiomycetes
d) Phycomycetes
Answer: a

Question. Coliphase ϕ × 174 virus contains:
a) Single stranded RNA
b) Single stranded DNA
c) Double stranded RNA
d) Double stranded DNA
Answer: b

Question. Circular single stranded DNA occurs in bacteriophage:
a) T2, T4
b) T3, ϕ6
c) ϕ × 174, M13
d) δ, T5
Answer: c

Question. According to two-kingdom classification, the kingdom Plantae consists of:
a) Autotrophs
b) Heterotrophs
c) Mesotrophs
d) Chemotrophs
Answer: a

Question. Virus could be crystallized and crystals consist largely of proteins. This was shown by:
a) W. M. Stanley
b) M. W. Stanley
c) W. M. John
d) None of the options
Answer: a

Question. In plants, mosaic formation, leaf rolling and curling, yellowing of plant parts, vein clearing, dwarfing and stunted growth, necrosis, etc), are the symptoms of:
a) Bacterial diseases
b) Mycoplasmal diseases
c) Viral diseases
d) Fungal diseases
Answer: c

Question. During unfavourable conditions, the plasmodium differentiates to form fruiting bodies bearing spores at their tips. This group is:
a) Chrysophytes
b) Dinoflagellates
c) Slime moulds
d) Protozoans
Answer: c

Question. Which of the following is irrelevant to the kingdom Plantae?
a) Spirogyra
b) Rhizopus
c) Funaria
d) Cycas
Answer: b

Question. Kingdom Animalia is characterized by:
a) Unicellular, prokaryotic and autotrophic
b) Multicellular, eukaryotic and heterotrophic
c) Multicellular, prokaryotic and saprophytic
d) Unicellular, eukaryotic and heterotrophic
Answer: b