TASK DEFINITION: In this task, you are given a question and a context passage. You have to answer the question based on the given passage.
PROBLEM: Which of the following does not have chloroplasts: plants, Konstantin Mereschkowski, or algae?, Context: Chloroplasts are one of many types of organelles in the plant cell. They are considered to have originated from cyanobacteria through endosymbiosis—when a eukaryotic cell engulfed a photosynthesizing cyanobacterium that became a permanent resident in the cell. Mitochondria are thought to have come from a similar event, where an aerobic prokaryote was engulfed. This origin of chloroplasts was first suggested by the Russian biologist Konstantin Mereschkowski in 1905 after Andreas Schimper observed in 1883 that chloroplasts closely resemble cyanobacteria. Chloroplasts are only found in plants and algae.

SOLUTION: Konstantin Mereschkowski

PROBLEM: Which, between neutrophils and macrophages, are found in the bloodstream?, Context: Neutrophils and macrophages are phagocytes that travel throughout the body in pursuit of invading pathogens. Neutrophils are normally found in the bloodstream and are the most abundant type of phagocyte, normally representing 50% to 60% of the total circulating leukocytes. During the acute phase of inflammation, particularly as a result of bacterial infection, neutrophils migrate toward the site of inflammation in a process called chemotaxis, and are usually the first cells to arrive at the scene of infection. Macrophages are versatile cells that reside within tissues and produce a wide array of chemicals including enzymes, complement proteins, and regulatory factors such as interleukin 1. Macrophages also act as scavengers, ridding the body of worn-out cells and other debris, and as antigen-presenting cells that activate the adaptive immune system.

SOLUTION: Neutrophils

PROBLEM: Name three international leaders allied with Tito?, Context: Josip Broz Tito (Cyrillic: Јосип Броз Тито, pronounced [jǒsip brôːz tîto]; born Josip Broz; 7 May 1892[nb 1] – 4 May 1980) was a Yugoslav revolutionary and statesman, serving in various roles from 1943 until his death in 1980. During World War II he was the leader of the Partisans, often regarded as the most effective resistance movement in occupied Europe. While his presidency has been criticized as authoritarian, and concerns about the repression of political opponents have been raised, Tito was "seen by most as a benevolent dictator" due to his economic and diplomatic policies. He was a popular public figure both in Yugoslavia and abroad. Viewed as a unifying symbol, his internal policies maintained the peaceful coexistence of the nations of the Yugoslav federation. He gained further international attention as the chief leader of the Non-Aligned Movement, working with Jawaharlal Nehru of India, Gamal Abdel Nasser of Egypt and Sukarno of Indonesia.

SOLUTION:
Jawaharlal Nehru of India, Gamal Abdel Nasser of Egypt and Sukarno of Indonesia