Viroids differ from viruses in having
1. DNA molecules with protein coat
2. DNA molecules without protein coat
3. RNA molecules with protein coat
4. RNA molecules without protein coat

Naked cytoplasm, multinucleated and saprophytic are the characteristics of

An association between roots of higher plants and fungi is called
1. Lichen
2. Fern
3. Mycorrhiza
4. BGA

Contagium vivum fluidum was proposed by

With respect to fungal sexual cycle, choose the correct sequence of events
1. Karyogamy, Plasmogamy and Meiosis
2. Meiosis, Plasmogamy and Karyogamy
3. Plasmogamy, Karyogamy and Meiosis
4. Meiosis, Karyogamy and Plasmogamy

Members of phycomycetes are found

Choose from the following options:

Match the bacteria in Column I with its shape in Column II and select the correct option from the codes given below:

Codes

In the symbiotic relation lichen, the mycobiont does not:
1. prepare food for the other partner
2. provide shelter to the other partner
3. absorb mineral nutrients for the other partner
4. absorb water for the other partner

Potato Spindle Tuber Disease is caused by a pathogen that is:

Prion is:
1. A nucleocapsid
2. A low molecular weight free RNA
3. An abnormally folded protein
4. A protozoan