Biological Classification · Question 16

Which of the following statements is incorrect?

1. Infective constituent in viruses is the protein coat
2. Prions consist of abnormally folded proteins
3. Viroids lack a protein coat
4. Viruses are obligate parasites

Which of the following statement is incorrect?

1. Conidia are produced exogenously and ascospores endogenously.
2. Yeasts have filamentous bodies with long thread-like hyphae.
3. Morels and truffles are edible delicacies.
4. Claviceps is a source of many alkaloids and LSD.

Match Column-I with Column –II. Choose the correct answer from the options given below :

1. (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
2. (a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
3. (a)-(ii), (b)-(i), (c)-(iii), (d)-(iv)
4. (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)

Which among the following is not a prokaryote?

1. Mycobacterium
2. Saccharomyces
3. Oscillatoria
4. Nostoc

Select the wrong statement.

1. Mushrooms belong to basidiomycetes.
2. Cell wall is present in members of fungi and plantae.
3. Pseudopodia are locomotory and feeding structures in sporozoans.
4. Mitochondria are the powerhouse of the cell in all kingdoms except monera.

After karyogamy followed by meiosis, spores are produced exogenously in

1. Saccharomyces
2. Neurospora
3. Alternaria
4. Agaricus

Which of the following organisms are known as chief producers in the oceans?

1. Euglenoids
2. Cyanobacteria
3. Dinoflagellates
4. Diatoms

Ciliates differ from all other protozoans in

1. having a contractile vacuole for removing excess water
2. having two types of nuclei
3. using flagella for locomotion
4. using pseudopodia for capturing prey

Which of the following are found in extreme saline conditions?

1. Eubacteria
2. Cyanobacteria
3. Mycobacteria
4. Archaebacteria

Viroids differ from viruses in having

1. DNA molecules without protein coat
2. RNA molecules with protein coat
3. RNA molecules without protein coat
4. DNA molecules with protein coat