Which one of the following is present as an active ingredient in bleaching powder for bleaching action?

1. $Ca(OCl{)}_2$

2. $Ca{O}_{2}Cl$

3. $CaC{l}_2$

4. $CaOC{l}_2$

The most recent and direct pre-historic ancestor is:

1. Cro-magnon 

2. Neanderthal

3. Pre-neaderthal

4. None of these

Rh-factor can produce disease:

1. AIDS

2. Turner's syndrome

3. Erythroblastosis foetalis

4. Sickle cell anaemia

Pneumotaxic centre which can moderate the functions of the respiratory rhythm centre is present at:

1. Pons region in brain

2. Thalamus

3. Spinal cord

4. Right cerebral hemisphere

Which type of cells are absent in sponges?

1. Trophocytes

2. Myocytes

3. Archaeocytes

4. Cnidocytes

Zero growth means:

1. natality balance mortality

2. natality is more than mortality

3. natality is less than mortality

4. natality is zero

Which of the following hormone secretes a gastric secretion?

1. Entero gastrone

2. Gastrin

3. CCK-PZ

4. Villikinin

The protein a -1 antitrypsin is used to treat which of the following diseases?

Darwin’s finches represent:

1. Morphological variations

2. Geographical isolations

3. Climate variations

4. Reproductive isolation

Food storage in Leucosolenia occur by:

1. ostia

2. osculum

3. thesocytes

4. spongocoel