Environmental Science - Study Mode

[#141] Blue whale is placed under
Correct Answer

(A) Endangered

Explanation

Solution: The blue whale (Balaenoptera musculus) is a marine mammal belonging to the baleen whale suborder Mysticeti. Reaching a maximum confirmed length of 29.9 meters (98 feet) and weight of 173 tonnes (190 tons), it is the largest animal known to have ever existed. Blue whale is placed under endangered.

[#142] What is edge species?
Correct Answer

(A) The species which occur abundantly in the ecotone

Explanation

Solution: The organisms which occur primarily or most abundantly in the ecotone are known as edge species.

[#143] The effects of radioactive pollutants depends upon
Correct Answer

(D) All of these

Explanation

Solution: The extent of damage or danger posed to the environment depends upon the radioactive material concentration, the energy emitted by the radiation, proximity of the radioactive materials to those exposes, and the radiation type.

[#144] Light energy is transformed into chemical energy by
Correct Answer

(A) Photosynthesis

Explanation

Solution: During the process of photosynthesis, light penetrates the cell and passes into the chloroplast. The light energy is intercepted by chlorophyll molecules on the granal stacks. Some of the light energy is converted to chemical energy. During this process, a phosphate is added to a molecule to cause the formation of ATP.

[#145] How do red and blue light differ?
Correct Answer

(B) The wavelength of red light is longer.

Explanation

Solution: Red light has a slightly longer wavelength than blue light. Red light (at one end of the visible spectrum) has a longer wavelength than blue light.