General
✓✗A protist has stiff cellulose plates on the outer surface of its cell wall, two flagella (one longitudinal and one transverse) and causes red tides. It is a
- euglenoid
- slime mould
- chrysophyte
- dinoflagellate
General
✓✗Which one is a wrong statement?
- Haploid endosperm is typical feature of Gymnosperms.
- Brown algae have chlorophyll a and c and fucoxanthin.
- Archegonia are found in Bryophyta, Pteridophyta and Gymnosperms.
- Mucor has biflagellate zoospores.
General
✓✗Pili represent
- Extrachromosomal genetic elements
- Protoplasmic outgrowths of donor cells
- Small flagella
- Special bacterial cilia
General
✓✗Which of the following Monerans lack cell wall?
- Actinomycetes
- Photosynthetic bacteria
- Eubacteria
- None of the above
General
✓✗Tobacco mosaic virus is a rod-shaped particle of size about
- 300 nm x 10 nm
- 300 nm x 5 nm
- 300 nm x 18 nm
- 700 nm x 30 nm
General
✓✗Ethanol is commercially produced through a particular species of
- Aspergillus
- Saccharomyces
- Clostridium
- Trichoderma
General
✓✗What is true for archaebacteria?
- All halophiles
- All photosynthetics
- All fossils
- Oldest living beings
General
✓✗In the two kingdom system, which of the following groups of organisms were all placed in Kingdom Plantae, although Whittaker later separated them into different kingdoms?
- Mosses, ferns and gymnosperms
- Angiosperms and gymnosperms
- Bacteria, blue-green algae, fungi, mosses and ferns
- Mosses, liverworts and hornworts
General
✓✗The figure shows four bacteria (A, B, C and D) with different arrangements of flagella. Choose the correct identification.
- A - Peritrichous, B - Monotrichous, C - Amphitrichous, D - Lophotrichous
- A - Lophotrichous, B - Monotrichous, C - Amphitrichous, D - Peritrichous
- A - Peritrichous, B - Amphitrichous, C - Monotrichous, D - Lophotrichous
- A - Peritrichous, B - Monotrichous, C - Lophotrichous, D - Amphitrichous
General
✓✗In bacteria, the respiratory enzymes are situated in the
- Cytoplasm
- Cell membrane
- Ribosomes
- Mitochondria
General
✓✗Which one of the following was NOT a criterion used by Whittaker for the five kingdom classification?
- Thallus organisation
- Cell structure
- Number of chromosomes
- Mode of nutrition
General
✓✗Which one single organism or the pair of organisms is correctly assigned to its or their named taxonomic group?
- Paramecium and Plasmodium belong to the same kingdom as that of Penicillium.
- Lichen is a composite organism formed from the symbiotic association of an algae and a protozoan.
- Yeast used in making bread and beer is a fungus.
- Nostoc and Anabaena are examples of protista.
General
✓✗Assertion: Euglenoids have a flexible body.
Reason: Instead of a cell wall, they have a protein-rich layer called pellicle.
Reason: Instead of a cell wall, they have a protein-rich layer called pellicle.
- Both Assertion and Reason are true and Reason is the correct explanation of Assertion
- Both Assertion and Reason are true but Reason is not the correct explanation of Assertion
- Assertion is true but Reason is false
- Both Assertion and Reason are false
General
✓✗Aspergillus niger is used for manufacture of
- citric acid and gluconic acid
- HCl to HNO3
- fumaric and malic acid
- succinic and fumaric acid
General
✓✗Which of the following unicellular organisms has a macronucleus for trophic function and one or more micronuclei for reproduction?
- Euglena
- Amoeba
- Paramecium
- Trypanosoma