Biological Classification

Which one of the following is true for fungi?

1. They lack a rigid cell wall.
2. They are heterotrophs.
3. They lack nuclear membrane.
4. They are phagotrophs.

Satellite RNA are present in some :

1. Prions
2. Bacteriophages
3. Plant viruses
4. Viroids

Specialized cells for fixing atmospheric nitrogen in Nostoc are

1. heterocysts
2. hormogonia
3. nodules
4. akinetes

In the five kingdom classification, Chlamydomonas and Chlorella have been included in

1. protista
2. algae
3. plantae
4. monera.

How many organisms in the list given below are autotrophs? Lactobacillus, Nostoc, Chara, Nitrosomonas, Nitrobacter, Streptomyces, Saccharomyces, Trypanosoma, Porphyra, Wolffia

1. Four
2. Five
3. Six
4. Three

Which one of the following sets of items in the option A – D are correctly categorized with one exception in it ?

1. array|l|l|l| ITEMS & CATEGORY & EXCEPTION \ Kangaroo, Koala, Wombat & Australian marsupials & Wombat \ array
2. array|l|l|l| ITEMS & CATEGORY & EXCEPTION \ Typhoid, Pneumonia, Diphtheria & Bacterial diseases & Diphtheria \ array
3. array|l|l|l| ITEMS & CATEGORY & EXCEPTION \ UAA, UAG, UGA & Stop codons & UAG \ array
4. array|l|l|l| ITEMS & CATEGORY & EXCEPTION \ Plasmodium, Cuscuta, Trypanosoma & Protozoan parasites & Cuscuta \ array

Which statement is wrong for viruses?

1. All are parasites.
2. All of them have helical symmetry.
3. They have ability to synthesize nucleic acids and proteins.
4. Antibiotics have no effect on them.

Maximum nutritional diversity is found in the group

1. fungi
2. animalia
3. monera
4. plantae

Nuclear membrane is absent in

1. Penicillium
2. Agaricus
3. Volvox
4. Nostoc

The cyanobacteria are also referred to as

1. protists
2. golden algae
3. slime moulds
4. blue green algae