The pigment that absorbs light energy for photosynthesis is mainly located in the: MCQ with Answer and Explanation

Explanation:
The Krebs cycle, also known as the citric acid cycle or TCA cycle, is the central metabolic pathway for the oxidation of acetyl-CoA to produce energy (ATP, NADH, FADH2). It was discovered by the British-German biochemist Sir Hans Adolf Krebs in 1937. He was awarded the Nobel Prize in Physiology or Medicine in 1953 for this discovery. Melvin Calvin elucidated the carbon pathway in photosynthesis.

Explanation:
A biological species is defined as a group of potentially interbreeding natural populations that are reproductively isolated from other such groups and produce fertile offspring. Physical similarity or shared habitat does not guarantee species status, as reproductive isolation is the key criterion.

Explanation:
Phototropism is the directional growth of a plant in response to light; shoots exhibit positive phototropism (grow towards light), roots negative. Auxin redistribution causes differential growth. Geotropism is gravity response, hydrotropism water, thigmotropism touch. Phototropism optimizes light capture for photosynthesis.