Q. No.The cell walls of diatoms are ‘indestructible’ as they are embedded with:
1.
Silica
2.
Chitin
3.
Calcium
4.
Raphides
Bacteriophages are:
| 1. | Bacteria infecting ss RNA viruses |
| 2. | Bacteria infecting ds RNA viruses |
| 3. | Viruses that infect bacteria and generally have ds DNA |
| 4. | Viruses that infect bacteria and generally have ds RNA |
The phenomenon of red tides is associated with blooms of:
| 1. | Zooxanthelle | 2. | Gonyaulax |
| 3. | Blue green algae | 4. | Ctenoplana and Beroe |
Identify the incorrect statement regarding Euglenoids:
| 1. | Majority are found in fresh stagnant water |
| 2. | Presence of two flagella |
| 3. | Behave as heterotrophs when deprived of sunlight |
| 4. | Pigments entirely different from those found in higher plants |
Which of the following is not true for fungi belonging to the class phycomycetes?
| 1. | Aseptate and coenocytic mycelium |
| 2. | Spores endogenously produced in sporangium |
| 3. | Asexual reproduction by nonmotile zoospores or motile aplanospores |
| 4. | Found in aquatic habitats, decaying wood or as obligate parasites on plants |
Which of the following is not a character of Ascomycetes?
| 1. | Mycelium is unbranched and septate |
| 2. | Asexual spores conidia are produced exogenously |
| 3. | Sexual spores called ascospores are produced endogenously |
| 4. | Conidia on germination produce mycelium |
The major criteria used for classification of Protozoans is:
| 1. | Nature of cell envelope | 2. | Mode of locomotion |
| 3. | Mode of heterotrophic nutrition | 4. | Habitat |
African sleeping sickness is caused by a/an:
| 1. | Amoeboid protozoan | 2. | Flagellated protozoan |
| 3. | Ciliated protozoan | 4. | Sporozoan |
Kingdom Monera in Whittaker’s Five Kingdom classification is not characterized by:
1. Prokaryote cell type
2. Cellulosic cell wall
3. Absence of nuclear membrane
4. Cellular body organization
Which of the following is not a feature of the members of the class Basidiomycetes?
1. Branched and septate mycelium
2. Asexual spores are generally not formed
3. Vegetative reproduction not seen
4. Dikaryon stage commonly seen
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