Q. No.Identify the group of fungi that is not correctly matched with all the characters given below:
1.
Phycomycetes:
Mycelium – aseptate and coenocytic / Asexual reproduction by motile zoospores or by nonmotile aplanospores / spores – endogenously produced in the sporangium
2.
Ascomycetes:
Mycelium – unbranched and septate / Asexual spores are conidia / Conidia produced endogenously on conidiophores.
3.
Basidiomycetes:
Mycelium–branched and septate / Asexual spores are generally not found.
4.
Deuteromycetes:
Only the asexual or vegetative phase of these fungi are known.
Identify the incorrect statement:
| 1. | Virus has a protein coat called capsid made of small subunits called capsomeres. |
| 2. | The core has the genetic material - either RNA or DNA or both. |
| 3. | The capsomeres are arranged in helical or icosahedral forms. |
| 4. | Viruses can infect any type of organism. |
Consider the following regarding the reasons for the fact that now Cyanobacteria are kept in Monera and not in Plantae:
I. They are prokaryotes.
II. The cell wall of cyanobacteria has peptidoglycan.
III. They can fix atmospheric nitrogen
The Corrcet explanations would be:
1. I and II only
2. I and III only
3. II and III only
4. I, II and III
Which of the following statements regarding Euglenoids is not true?
| 1. | Instead of a cell wall, they have a lipid rich pellicle |
| 2. | They have two flagella, a short and a long one |
| 3. | They are photosynthetic in the presence of sunlight but behave like a heterotroph when deprived of sunlight |
| 4. | Pigments of Euglenoids are identical to those present in higher plants |
Identify the incorrectly matched pair:
1. Diatoms: Chief producers in oceans
2. Dinoflagellates: Red tides
3. Slime moulds: Spores dispersed by water
4. Euglenoids: Protein rich pellicle
Identify the incorrect statement :
1. Heterotrophic bacteria are important decomposers
2. Diatoms are chief producers in the oceans
3. The pigments of Euglenoids are identical to those present in higher plants
4. Very few protozoans are autotrophs
Members of Kingdom Protista
1. are primarily aquatic
2. do not have membrance bound organelles
3. are all ciliated or flagellated
4. reproduce exclusively by asexual means
Match each item in Column I with one in Column II and select your answer from the codes given below:
| Column I | Column II | ||
| A. | Diatoms | a. | Protein-rich layer of pellicle |
| B. | Dinoflagellates | b. | Cell wall embedded with silica |
| C. | Euglenoids | c. | Spores with true walls |
| D. | Slime moulds | d. | Cellulose plates in the cell wall |
Codes:
| A | B | C | D | |
| 1. | b | a | c | d |
| 2. | b | d | a | c |
| 3. | b | c | a | d |
| 4. | b | a | d | c |
All the following statements regarding Basidiomycetes are correct except:
| 1. | The mycelium is branched and septate |
| 2. | Asexual spores and vegetative reproduction are generally not found |
| 3. | Sex organs are absent |
| 4. | Basidiospores are exogenously produced on the basidium |
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