An artificial group within fungi is
1. Ascomycetes
2. Deuteromycetes
3. Basidiomycetes
4. Phycomycetes
After karyogamy followed by meiosis, spores are produced exogenously in
1. Neurospora
2. Saccharomyces
3. Agaricus
4. Alternaria
Heterotrophic, eukaryotic, multicellular organisms lacking a cell wall are included in the kingdom.
1. Protista
2. Fungi
3. Plantae
4. Animalia
Select the correct statement:
1. | Cholera, typhoid, tetanus are well-known diseases caused by viruses. |
2. | Dinoflagellates, euglenoids and slime moulds are placed under kingdom Monera |
3. | Members of kingdom Protista are primarily aquatic |
4. | Dinoflagellates are the chief 'producers' in the oceans |
In 1971, T.O. Diener discovered a new infectious agent that was smaller than viruses –
I. | It causes potato spindle tuber disease. |
II. | It is free RNA. |
III. | Molecular wt. of RNA is low. |
The above statements are assigned to –
1. Viruses
2. Viroids
3. Virulent
4. Mycoplasma
Which of the following is correct about class Deuteromycetes?
1. Some members are saprophytes or parasites.
2. A large number of members are decomposers of litter and help in mineral cycling.
3. Alternaria, Colletotrichum and Trichoderma are deuteromycetes.
4. All
Identify the blanks in the following figures –
1. | A – Cell wall, B – Cell membrane, C – Heterocyst, D – DNA, E – mucilaginous sheath. |
2. | A – Cell wall, B – Cell membrane, C – DNA, D – Heterocyst, E – Mucilaginous sheath. |
3. | A – Mucilaginous sheath, B – Cell membrane, C – DNA, D – Heterocyst, E – Cell wall. |
4. | A – Cell membrane, D – Cell wall, C – DNA, D – Heterocyst, E – Mucilaginous sheath. |
Which of the following is not true for three domain
system?
1. Divides kingdom monera into two domains.
2. Third domain includes all eukaryotic organisms.
3. It resulted in six kingdom classifications.
4. It is not phylogenetic.
Archaebacteria differ from other bacteria on the
basis of
1. Cell membrane structure.
2. Cell wall structure.
3. Presence of vacuole.
4. flagella structure.
In case of protists sexual reproduction can be by
1. Cell fusion
2. Zygote formation
3. Triple fusion
4. Both 1 and 2