Which of the following is not a mosquito borne disease?

1. 1. Dengue fever
   2. Malaria
   3. Sleeping sickness
   4. Filariasis

The earliest organisms that appeared on the surface of earth were probably _____.

1. 1. Autotrophs
   2. Symbionts
   3. Heterotrophs
   4. None of the above

Photosynthesis is a bio-chemical process for the transfer of solar energy to _____.

1. 1. Nitrogen cycle
   2. Hydraulic cycle
   3. Petrological cycle 
   4. Food chain cycle

Pollens are produced in larger numbers and are light in weight in flowers pollinated by _____.

1. 1. Insects
   2. Wind
   3. Water
   4. All of above

The forests in Pakistan comprising of which one of the following are facing the danger of extinction?

1. 1. Non-vascular plants
   2. Vascular plants
   3. Prokaryotes
   4. Tracheophytes

Which of the followings are considered to be the simplest living organisms with ability to manufacture their own food by photosynthesis?

1. 1. Blue-green algae
   2. Diatoms
   3. Bacteria
   4. Green plants

Which one of the following plants bears no fruit but produces seeds?

1. 1. Groundnut
   2. Almond
   3. Sugarcane
   4. Cycas

Green colour of plants is due to the presence of _____.

1. 1. Chlorophyll
   2. Sodium
   3. Iron
   4. Phosphorous

The plant part rich in carbohydrates is _____.

1. 1. Potato tuber
   2. Onion
   3. Spinach leaf
   4. Orange fruit

In what form is the food in onion stored?

1. 1. Protein
   2. Starch
   3. Sugar
   4. Cellulose