Judge the following sentence according to the criteria given below: Reef-building corals are not able to survive in nutrient-poo
r tropical waters BECAUSE they receive most of their nutrition by capturing tiny planktonic food with their stinging tentacles. A, The assertion and the reason are both correct, and the reason is valid.
B, The assertion and the reason are both correct, but the reason is invalid.
C, The assertion is correct, but the reason is incorrect.
D, The assertion is incorrect, but the reason is correct.
E, Both the assertion and the reason are incorrect.
E. Both the assertion and the reason are incorrect.
Explanation:
Coral reefs are found in the tropical water which is poor in nutrients. The species of coral that form the reefs have symbiotic zooxanthellae in their tissues that can carry out the process of photosynthesis. The coral reefs obtain their food from their symbiont and hence, can survive in the water that lacks enough supply of nutrients.
Coral reefs also use their stinging tentacles and capture the small animals to feed on them. However, the food derived from symbiont zooxanthellae is the major source of nutrients for them.
The processes that formed the small stream bed are similar to those that formed the Grand Canyon because both are formed by the flowing of river. The river flow through these regions and with this flow they takes rock particles with itself and makes several shapes and structures of that region. So we say that rivers and streams are responsible for the formation of stream bed and Grand Canyon.
Soil structure is the arrangement of soil peds. This arrangement determines the space between soil peds, which determines the porosity of soil. Soil texture is determined by the amount and distribution of mineral particles.
