Which of the following tracheophytes are also called arthrophytes_____.

1. 1. Psilopsids
   2. Lycopsids
   3. Prteropsids
   4. Sphenopsids

Membranes of the grane are sites where?

1. 1. Sunlight is trapped
   2. Oxygen is stored
   3. Food is stored
   4. CO2 is store

Which of the following fish drink large amount of sea water and excrete concentrated urine resulting in maximum salt excretion and minimal water loss?

1. 1. Hagfish
   2. Bony fishes
   3. Fresh water fishes
   4. All of these

In most birds air sacs are_____in number?

1. 1. 9
   2. 10
   3. 12
   4. 13

There are cells in human body called Faggot cells which cause_____.

1. 1. AIDS
   2. Tuberculosis
   3. Leukaemia
   4. Smallpox

Movement of the material across the cell membrane which does not requiring expenditure of metabolic energy is called_____.

1. 1. Passive transport
   2. Active transport
   3. Co-transport
   4. Counter transport

Which of the following animal excrete nitrogenous waste mainly as uric acid?

1. 1. Birds
   2. Hydra
   3. Planaria
   4. Humans

DNA or RNA of viruses is enclosed in_____coat?

1. 1. Lipid
   2. Carbohydrate
   3. Protein
   4. DNA

Bony callus formation completes in_____.

1. 1. 2-3 months
   2. 2-4 weeks
   3. 3-5 weeks.
   4. 3-6 months

Which structural organization is most common in globular proteins_____.

1. 1. Quaternary
   2. Primary
   3. Secondary
   4. Tertiary