BIOLOGY M.C.Q (1 Marks)

4. None of the above.

Explanation:

Since viruses are considered as borderline case between living and non-living things; no kingdom has been specified for them.

4. RNA dependent DNA polymeras.

3. Cheetah.

1. Cuvier.

2. Anatomical and physiological traits.

3. Lichens.

Explanation:

Lichens are the indicators of air pollution. Lichens are the association between fungi and algae. They do not grow in polluted areas.

4. All of the above.

1. Species.

1. Sexual cycle.

1. DS DNA.

3. Order.

2. diarrhoea.

4. 300 × 18nm.

1. R.H. Whittaker.

Explanation:

R. H. Whittaker proposed five kingdom classification in 1959. Monera, Protista, Fungi, Plantae and Animalia are the five kingdoms according to R. H. Whittaker.

1. Mechanical pressure and enzymes.

1. Yeast.

4. Sibling species.

3. They develop sooty masses of spores.

3. Ethanol.

3. Virus

Explanation:

The virus is non living infectious particle, hence, they can be crystallized. 

The tobacco mosaic virus was the first virus to be crystallized.

It was achieved by W M Stanley in 1935 who also showed that TMV remains active even after crystallization.

For his work, he was awarded Nobel Prize in Chemistry in 1946.

1. Absence of protein coat in viroid but present in virus.

Explanation:

Viroids are smallest self replicating particles of low molecular weight. They are infectious RNA particles, lack protein coat and cause disease only in plants. However, virus can have both DNA or RNA as genetic material and have protein coat.

2. Uredia and telia on wheat leaves.

1. Puccinia.

Explanation:

Quinine is obtained from Cinchona officinalis.

4. Meiosis, Karyogamy and Plasmogamy.

2. Escherichia.

4. Viruses are obligate parasites.

3. Plasmogamy, Karyogamy and Meiosis.

Explanation:

In fungi, sexual reproduction involves the formation and union of two gametes or their nuclei. Fusion of gametes involves union of cytoplasm called plasmogamy and fusion of nuclei, known as karyogamy. Plasmogamy is followed by karyogamy but in higher fungi karyogamy is delayed and it occurs before meiosis. Therefore, the correct sequence in sexual reproduction of fungal life cycle is plasmogamy, karyogamy and meiosis.

2. Tse-tse fly.

2. Lytic.

2. Vibrio.

1. Glycogen.

1. Chemosynthetic bacteria.

4. Plasmodium.

3. Phytoalexins.

4. Glycogen and oil

Explanation:

Fungi usually store their food as glycogen, like that of animals.

Rhizopus have storage of food in the form of both glycogen and oil.

Plants and algae store their food in the form of starch.

3. Division-class-order-family-tribe-genusspecies.

3. Binomial.

3. Merozoites.

3. Laveran.

3. Sleeping sickness.

Explanation:

Trypanosoma causes sleeping sickness.

2. Natural system.

4. Monera.

2. Four.

3. Sporozoite.

4. Proteins, DNA or RNA (nucleic acids)

Explanation:

Viruses are ultramicroscopic and can cause diseases in plants and animals.

They are very simple in their structure.

They are composed of nucleic acid surrounded by a protein coat.

The nucleic acid can be either RNA or DNA, but never both.

2. M.W. Beijerinek.

1. Cell wall structure.

4. Engler and Prantl.

2. Interferons.

1. Desmids – Chrysophytes.