Kala-azar is a chronic and potentially fatal parasitic disease of the viscera (the internal organs, particularly the liver, spleen, bone marrow and lymph nodes) which is transmitted by sand fly bites in parts of Asia (primarily India), Africa (primarily Sudan) and South America. It is transmitted by the bite of female sandflies.

Correct Option: D

Kala-azar is a chronic and potentially fatal parasitic disease of the viscera (the internal organs, particularly the liver, spleen, bone marrow and lymph nodes) which is transmitted by sand fly bites in parts of Asia (primarily India), Africa (primarily Sudan) and South America. It is transmitted by the bite of female sandflies.

A respiratory pigment is a molecule, such as hemoglobin in humans, that increases the oxygencarrying capacity of the blood. The four most common invertebrate respiratory pigments are hemoglobin, haemocyanin, haemerythrin and chlorocruorin.

Correct Option: D

A respiratory pigment is a molecule, such as hemoglobin in humans, that increases the oxygencarrying capacity of the blood. The four most common invertebrate respiratory pigments are hemoglobin, haemocyanin, haemerythrin and chlorocruorin.

Insect and bird wings are analogous structures but not homologous structures. They are externally similar in appearance and function (i.e. for flying), but have dissimilar developmental plan.

Correct Option: B

Insect and bird wings are analogous structures but not homologous structures. They are externally similar in appearance and function (i.e. for flying), but have dissimilar developmental plan.

The Biosphere is the global sum of all ecosystems. It can also be called the Zone of life on Earth. The Biosphere is the global ecological system integrating all living beings and their relationships, including their interaction with the elements of the lithosphere, hydrosphere and atmosphere.

Correct Option: B

The Biosphere is the global sum of all ecosystems. It can also be called the Zone of life on Earth. The Biosphere is the global ecological system integrating all living beings and their relationships, including their interaction with the elements of the lithosphere, hydrosphere and atmosphere.

The monosaccharides responsible for sweet taste in fruit is fructose.

Correct Option: B

The monosaccharides responsible for sweet taste in fruit is fructose.