NDA Biology 2016/2017 Past Questions

_____ is a reasonable explanation for a particular observation or natural phenomenon.

All green plants manufacture their food through a process or mode of nutrition called

Another name for an autotrophic mode of nutrition is known as

Which of these is not a class of vertebrates?

The main vein which returns blood from the brain to the heart in animals is called

The eye defect that occurs when the eyeball is short is called

The type of enzyme that digests carbohydrates is called

Osmoregulation in Euglena occurs with the help of

A step in the movement of energy through an ecosystem is a description that best fits the term

Which of the following substances is not transported by the blood in a mammal?

Xerophthalmia is an inflammation of

To plants, the structure that performs a similar function with the testis in mammals is the

The bacteria types that are arranged in chains are the

The most abundant group of organisms in the animal kingdom is

____ is the wearing away and removal of fertile topsoil from an area by the wind and water

An agricultural activity where a commercial farmer combines livestock rearing with crop production is called

Which of the following part of the tongue is sensitive to sugar

In fishes, gaseous exchange occurs in

Toxic substances produced and released into the environment as a result of human activities that have damaging effects on living organisms is known as ______

The study of freshwater habitats and the ecosystem is called_____

Which of the following mineral salt is a trace element?

Which of the enzyme is present in the saliva?

Sugar cane is botanically known as

...... represents the total weight or dry mass of the organism in each trophic level

_______ are plants that can survive in an environment such as the desert, where water supply is scarce

The gases that are commonly used as a coolant in refrigerators and air conditioners are known as

______ is an invisible and extremely dangerous pollutant

The means of ensuring a high quality of life for humans by the wise use of the natural environment is known as

A constituent of the exhaust gases of motor vehicles which causes serious air pollution is

The site for synthesis, packaging and distribution of materials in a cell is known as

A form of regeneration whereby a part of an organism breaks up and gives rise to a new individual is known as_____

The main types of materials found in the skeleton of animals include the following except

The main types of skeletons in animals include the following except

______ holds the upper limits or arms to the axial skeleton

Supporting tissues include the following except

One of the following symptoms in maize crop would make you suspect the soil of the deficiency of magnesium

The rate of transpiration in plants can be measured using______

Which of the following is NOT a characteristic feature of a wind-dispersed fruit?

The solution used in the test for glucose is

The dentition of a herbivore is distinct from that of other animals due to the presence of