Biological Classification

In protozoa like Amoeba and Paramecium, the organ for osmoregulation is

1. contractile vacuole
2. mitochondria
3. nucleus
4. food vacuole.

Organisms which obtain energy by the oxidation of reduced inorganic compounds are called

1. photoautotrophs
2. chemoautotrophs
3. saprozoic
4. coproheterotrophs

Cauliflower mosaic virus contains

1. ss RNA
2. ds RNA
3. ds DNA
4. ss DNA

What is true for cyanobacteria?

1. Oxygenic with nitrogenase
2. Oxygenic without nitrogenase
3. Non-oxygenic with nitrogenase
4. Non-oxygenic without nitrogenase

What is true for archaebacteria?

1. All halophiles
2. All photosynthetics
3. All fossils
4. Oldest living beings

Adhesive pad of fungi penetrates the host with the help of

1. mechanical pressure and enzymes
2. hooks and suckers
3. softening by enzymes
4. only by mechanical pressure

What is true for photolithotrophs?

1. Obtain energy from radiations and hydrogen from organic compounds
2. Obtain energy from radiations and hydrogen from inorganic compounds
3. Obtain energy from organic compounds
4. Obtain energy from inorganic compounds

Black rust of wheat is caused by

1. Puccinia
2. Ustilago
3. Albugo
4. Phytophthora.

Enzymes are not found in

1. fungi
2. algae
3. virus
4. cyanobacteria.

Which disease of man is similar to cattle's bovine spongiform encephalopathy?

1. Spongiocitis of cerebrum
2. Encephalitis
3. Spondylitis
4. Jakob–Creutzfeldt disease