Questions
Which of the following organisms is correctly matched with its particularly named taxonomic category?
- Human - Homo, an order
- Tiger - Carnivora, a class
- Housefly - Musca, a genus
- Devil fish - Mollusca, a class
______ are associated with defense in protozoans.
- Nematocysts
- Statocysts
- Trichocysts
- Otocysts
Which of the following is a matching set of phylum and its three examples?
- Platyhelminthes - Planaria, Schistosoma and Enterobius
- Mollusca - Loligo, Teredo and octopus
- Porifera - Spongilla, Euplectella and Pennatula
- Cnidaria - Bonellia, Physalia and Aurelia
To which of the following categories does methanogens belong?
- Archaebacteria
- Cyanobacteria
- Phototropic bacteria
- Putrefaction bacteria
Motile cells are completely absent in the life cycle of
- noctiluca
- ulothrix
- anabaena
- oedogonium
Which of the following is not included in the five kingdom classification of R. H. Whittaker?
- Monera
- Virus
- Fungi
- Protista
What is the process of fusion of protoplasms between two motile or non-motile gametes called?
- Karyogamy
- Xenogamy
- Plasmogamy
- Autogamy
Which of the following are the locomotory organelles in protozoa?
- Setae
- Cilia
- Flagella
- Pseudopodia
Bryophytes resemble algae in most aspects, except the
- presence of thalloid plant body
- presence of vegetative reproduction
- dependence on water for fertilisation
- presence of jacketed and multicellular sex organs
A bacterium with numerous flagella all around is
- monotrichous
- lophotrichous
- amphitrichous
- peritrichous
To which of the following categories does the protein rich spirulina belong?
- Chlorophycae
- Mycoplasma
- Blue-green algae
- Bacteria
Presence of a bladder is the common feature of
- Teleostomi
- Agnathostomes
- Holocephali
- Elasmobranchii
'Watermelon snow' is caused due to
- Trichodesmium
- Gonyulaux
- Chlamydomonas nivalis
- Red algae
Which of the following statements about protistan algae are incorrect?
A. They are heterotrophic and one of the major components of phytoplanktons.
B. They are only neustonic in nature.
C. The cell is surrounded by a cell wall and possesses gelatinous matrix around the cell wall.
D. Distinct chloroplasts are absent.
E. Pyrenoids are present in protistan algae.
- A, B and D
- B, D and E
- A, B and E
- C, D and E
From which of the following bacteria is the hallucinogenic drug, LSD obtained?
- Claviceps purpurea
- Saccharomyces cerevisiae
- Penicillium notatum
- Rhizopus nigrican