Multiple Choice QuestionsWhich of the following organisms are known as chief producers in the oceans?
Dinoflagellates
Diatoms
Euglenoids
Cyanobacteria
Ciliates differ from all other protozoans in
using flagella for locomotion
having a contractile vacuole for removing excess water
having two types of nuclei
using pseudopodia for capturing prey
Match the following with correct combination.
| Column I | Column II |
| A. Cuscuta | 1. Saprophyte |
| B. Eichhornia | 2. Pneumatophare |
| C. Monotropa | 3. Insectivorous plant |
| D. Rhizophora | 4. Parasite |
| E. Utricularia | 5. Root pocket |
A |
B | C | D | E |
| 3 | 1 | 5 | 4 | 2 |
| A | B | C | D | E |
| 2 | 3 | 1 | 5 | 4 |
| A | B | C | D | E |
| 4 | 3 | 1 | 5 | 2 |
| A | B | C | D | E |
| 4 | 5 | 1 | 2 | 3 |
Thermococcus, Methanococcus and Methanobacterium are groups of
Bacteria containing a cytoskeleton and all membrane-bound organelles
Archaebacteria with peptidoglycan in their cell wall
Archaebacteria that consists of protein homologous to eukaryotic core histones
Most advanced type of bacteria
Which part of an animal virus is not reproduced in multiple copies?
Capsid
Protein
Envelope
Ribosome
Entamoeba histolytica differs from Amoeba in absence of
pseudopodia
contractile vacuole
nucleus
ectoplasm
Most primitive member, in which roots are not present, is
Psilotum
Rhynia
Lycopodium
Selaginella
B.
Rhynia
Psilophytes are the oldest of seedless vascular plants. They are characterised by the absence of roots and presence of rhizoids, eg, Rhynia- primitive member of Pteridophytes.
Lycopodium and Selaginella are developed pteridophytes in which plant body is differentiated into roots, stems and leaves.
The process which cannot take place in the absence of viruses is
transformation
conjugation
translocation
transduction
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