Biology questions
20584 published questions with worked solutions.
- Which of the following non-photosynthetic bacteria fixes nitrogen without any plant association?
- A plasmid
- Bacteria with single flagellum at one end is called
- A peculiar odour that prevails in marshy areas and cow-sheds is on account of a gas produced by
- An example for plant growth promoting rhizobacterium, which produces iron chelating substances, is
- Spirochaetes is/are
- The autonomously independent self-replicating extra nuclear DNA imparting certain factors to some bacterium is called
- An example for symbiotic bacteria
- Membrane-bound organelles are absent in
- Match the type of bacteria listed in column I with their activity given in column II. List-I: (A) Streptomyces (B) Rhizobium (C)...
- Which is the hereditary material in bacteria?
- According to five kingdom classification bacteria belong to
- Choose the correct sequence of stages of growth curve for bacteria
- Match the following columns. List-I: (A) Escherichia coli (B) Rhizobium meliloti (C) Bacillus thuringiensis (D) Pseudomonas...
- Free living, aerobic, non-photosynthetic, nitrogen fixing bacterium is
- Find out the pairs, which are correctly matched? I. Cyanobacteria – Biopesticides II. Mycorrhiza – Solubilization of phosphate...
- Plasmids occur in
- Study the following columns. List-I: (A) Devoid of flagella (B) Rod shaped (C) Bacteria in pairs (D) Comma shaped List-II: (1)...
- Which is correct for bacteria?
- Assertion: The true nucleus is generally absent in *E. coli* and other prokaryotes. Reason: An undifferentiated, unorganized...