The hormone that stimulates the Leydig cells to produce testosterone is: MCQ with Answer and Explanation

Explanation:
Nepenthes (pitcher plant) is an insectivorous plant that traps insects in its modified leaf pitchers to supplement nitrogen in nutrient-poor soils. Cuscuta is parasitic, Loranthus partial parasite, Monotropa saprophytic.

Explanation:
Robert Koch, a German physician and microbiologist, formulated Koch's postulates in the late 19th century. These four criteria are designed to establish a causal relationship between a specific microbe and a specific disease. The postulates require that the microbe must be found in all cases of the disease, isolated and grown in pure culture, cause the disease when inoculated into a healthy susceptible host, and be re-isolated from the experimentally infected host.

Explanation:
Mitochondria and chloroplasts contain their own DNA and ribosomes (70S) and can replicate by binary fission, a feature supporting their endosymbiotic origin. Golgi apparatus, lysosomes, and rough ER cannot self-replicate; they are part of the endomembrane system and arise from pre-existing membranes. Mitochondria are thus semi-autonomous organelles.