Consider the following four statements (a–d) and select the option which includes all the correct ones only:
Single cell Spirulina can produce large quantities of food rich in protein, minerals, vitamins etc.
Body weight-wise the microorganism Methylophilus methylotrophus may be able to produce several times more proteins than the cows per day.
Common button mushrooms are a very rich source of vitamin C.
A rice variety has been developed which is very rich in calcium.

• Statements (III), (IV)

• Statements (I), (III) and (IV)

• Statements (II), (III) and (IV)

• Statements (II), (III) and (IV)

Select the correct statements about biodiversity

• The desert areas of Rajasthan and Gujarat have a very high level of desert animal species as well as numerous rare animals

• Large scale planting of Bt cotton has no adverse effect on biodiversity

• Western Ghats have a very high degree of species richness and endemism

• Western Ghats have a very high degree of species richness and endemism

Identify the molecules (a) and (b) shown below and select the right option giving their source and use

• Molecule	Source	Use
  Coaine	Erythroxylum coca	Accelerates the transport of dopamine

• Molecule	Source	Use
  Heroin	Cannabis sativa	Depressant and slows down body functions

• Molecule	Source	Use
  Cannabinoid	Atropa belladona	Produces hallucinations

• Molecule	Source	Use
  Cannabinoid	Atropa belladona	Produces hallucinations

Represented below is the inheritance pattern of a certain type of traits in humans. Which one of the following conditions could be an example of this pattern?

• Phenylketonuria

• Sickle cell anaemia

• Haemophilia

• Haemophilia

The secretory phase in the human menstrual cycle in also called

• luteal phase and lasts for about 6 days

• follicular phase lasting for about 6 days

• luteral phase and lasts for about 13 days

• luteral phase and lasts for about 13 days

Identify the human developmental stage shown below as well as the related right palce of its occurrence in a normal pregnant woman, and select the right option for the two together. 

• Developmental Stage	Site of Occurrence
  Late morula	Middle part of fallopian tube

• Developmental Stage	Site of Occurrence
  Blastula	End part of fallopian tube

• Developmental Stage	Site of Occurrence
  Blastocyst	Uterine wall

• Developmental Stage	Site of Occurrence
  Blastocyst	Uterine wall

The domestic sewage in large cities

• has a high BOD as it contains both aerobic and anaerobic bacteria

• is processed by aerobic and then anaerobic bacteria in the secondary treatment is Sewage Treatment Plants (STPs)

• When treated in STPs does not really require the aeration step as the sewage contains adequate adequate oxygen

• When treated in STPs does not really require the aeration step as the sewage contains adequate adequate oxygen

Where do certain symbiotic microorganisms normally occur in human body?

• Caecum

• Oral lining and tongue surface

• Vermiform appendix and rectum

• Vermiform appendix and rectum

Identify the likely organisms (a), (b) (c) and (d) in the food web shown below

• (I)	(II)	(III)	(IV)
  deer	rabbit	frog	rat

• (I)	(II)	(III)	(IV)
  dog	squirrel	bat	deer

• (I)	(II)	(III)	(IV)
  rat	dog	tortoise	crow

• (I)	(II)	(III)	(IV)
  rat	dog	tortoise	crow

Which one of the following sets of items in the options 1 - 4 are correctly categorised with one exception in it?

• Items	Category	Exception
  UAA, UAG, UGA	Stop codons	UAG

• Items	Category	Exception
  Kangaroo, Koala, Wombat	Australian marsupials	Wombat

• Items	Category	Exception
  Plasmodium, Cuscuta, Trypanosoma	Protozoan parasites	Cuscuta

• Items	Category	Exception
  Plasmodium, Cuscuta, Trypanosoma	Protozoan parasites	Cuscuta