Fermentation by yeast is due to
Options
(a) amylase (b) invertase (c) zymase (d) galactose
Correct Answer:
zymase
Explanation:
Yeast is the unicellular fungi, of great economic importance. They have enzymes for converting […]
Extra nuclear DNA in E.coli is termed as
Options
(a) F factor (b) sex factor (c) episome (d) all of the preceeding,F factor,sex factor,episome
Correct Answer:
all of the preceeding,F factor,sex factor,episome
Explanation: […]
Coenogametes are found in
Options
(a) Ustilago (b) Puccinia (c) Rhizopus (d) Penicillium
Correct Answer:
Rhizopus
Explanation:
The gamentangia of Rhizopus/Mucor are undifferentiated masses of multinucleate protoplasts called coenogametangia.
Clamp connection is found in
Options
(a) basidiomycetes (b) ascomycetes (c) saccharomycetes (d) haplomycetes
Correct Answer:
basidiomycetes
Explanation:
The secondary mycelium of basidiomycetes is long lived. It consists of profusely branched sepate hyphae. […]
Chrysophytes, Euglenoids, Dinoflagellates and Slime moulds are included in the kingdom
Options
(a) Monera (b) Protista (c) Fungi (d) Animalia
Correct Answer:
Protista
Explanation:
All single-celled eukaryotes like chrysophytes [diatoms and desmids], Euglenoids […]
Cauliflower mosaic virus contains
Options
(a) ss RNA (b) ds RNA (c) ds DNA (d) ss DNA
Correct Answer:
ds DNA
Explanation:
Cauliflower mosaic virus contain dsDNA. It is circular and shows semidiscontinous […]
Black (stem) rust of wheat is caused by
Options
(a) Alternaria solani (b) Ustilago nuda (c) Puccinia graminis (d) Xanthomonas oryzae
Correct Answer:
Puccinia graminis
Explanation:
Black stem rust is caused by Puccinia […]
Basophilic prokaryotes
Options
(a) grow slowly in highly alkaline frozen lakes at high altitudes (b) occur in water containing high concentration of barium hydroxide (c) grow and multiply in very deep marine sediments […]
Bacterial leaf blight of rice is caused by a species
Options
(a) Alternaria (b) Erwinia (c) Xanthomonas (d) Pseudomonas
Correct Answer:
Xanthomonas
Explanation:
Bacterial leaf blight of rice is caused by Xanthomonas oryzae […]
Artificial system of plant classification was proposed by
Options
(a) de Candolle (b) Engler & Prantle (c) Theophrastus (d) Bentham & Hooker
Correct Answer:
Theophrastus
Explanation:
The artificial systems of classification were based […]
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