Quiz_Botany

Explanation:Apospory is the process where the gametophyte is formed from parts of the sporophyte other than spores, often as a form of vegetative reproduction.

Explanation:Loeffer and Frosch discovered the first animal pathogenic virus, the foot-and-mouth disease virus. This discovery was significant in understanding viral diseases in animals.

Explanation:Clostridium is a genus of anaerobic bacteria capable of nitrogen fixation. Unlike Azotobacter and Rhizobium, which are aerobic or symbiotic, Clostridium can fix nitrogen in the absence of oxygen.

Explanation:Volvox exhibits oogamous sexual reproduction, where large non-motile eggs are fertilized by smaller motile sperm, resulting in the formation of zygotes.

Explanation:AIDS is caused by the Human Immunodeficiency Virus (HIV), which was initially referred to as HTLV-III, LAV, or ARV. HIV attacks the immune system, leading to a progressive failure of immune function.

Explanation:Diaminopimelic acid and muramic acid are components of peptidoglycan, which is found in the cell walls of bacteria. These compounds provide structural integrity and rigidity to bacterial cell walls.

Explanation:Decay is the aerobic decomposition of organic matter, which occurs in the presence of oxygen. This process breaks down organic materials without producing foul odors, unlike anaerobic decomposition.

Explanation:In photosynthetic green sulfur bacteria, hydrogen sulfide (H₂S) serves as the hydrogen donor. These bacteria use H₂S instead of water to provide electrons for the reduction of carbon dioxide during photosynthesis.

Explanation:The palmella stage occurs when algal cells form a mucilaginous mass containing numerous small, uninucleated bodies, often as a response to adverse environmental conditions.

Explanation:Psychrophilic bacteria are adapted to grow at low temperatures, typically between at 0°C to 20°C temperatures. They are often found in cold environments such as Arctic and Antarctic regions.