Botany

PME (Pectin methylesterase) is an enzyme that catalyzes the de-esterification of pectin. It is widely used in the food industry.

Zymase is an enzyme complex that catalyzes the fermentation of sugar into ethanol and carbon dioxide. This process is central to brewing and baking.

Ribosomes are cellular structures composed of ribosomal RNA (rRNA) and proteins. They are the sites of protein synthesis in the cell.

PCR-based markers are used in molecular biology to identify genetic variations. They are specifically useful for distinguishing between different biotypes of organisms like the gall midge.

Homopolysaccharides are polysaccharides composed of a single type of monosaccharide unit. Both Dextran (glucose units) and Glycogen (glucose units) are homopolysaccharides.

Dacrydium laxifolium is a species of conifer in the family Podocarpaceae. It is widely recognized as the smallest conifer in the world.

In an embryo, the hypocotyl is the region below the cotyledons, and the epicotyl (embryonic shoot) is the region above the attachment of the cotyledons.

Gymnosperms are seed-producing plants (phanerogams) that do not produce flowers or fruits; therefore, their seeds are not enclosed in an ovary.

Each amino acid is recognized by at least one specific tRNA molecule. While some amino acids have multiple tRNAs, the minimum required is one per amino acid.

The Calvin cycle must turn six times to fix enough carbon (6 CO2) to produce one molecule of glucose (C6H12O6).

Whittaker's five-kingdom classification system consists of Monera, Protista, Fungi, Plantae, and Animalia.

Stomata are the pores through which transpiration occurs. Increasing the number of stomata would increase the rate of transpiration, not reduce it.

The dark reaction (Calvin cycle) of photosynthesis is where carbon dioxide is reduced and converted into sugar; it does not require light directly.

Lichens are a symbiotic association between a fungus (mycobiont) and an alga or cyanobacterium (photobiont).

Prophase is the first phase of mitosis, characterized by the condensation of chromatin into visible, thread-like chromosomes.

DNA glycosylases (option has typo 'glycolysase') are specialized repair enzymes that recognize specific damaged or inappropriate bases in DNA and initiate the base excision repair pathway.

Solution culture is the standard technique for growing plants in a nutrient solution to study the effects of specific mineral deficiencies or toxicities. Hydroponics is a broader term for growing plants in water, but solution culture is the specific experimental method for nutrient studies.

Nostoc is a genus of cyanobacteria that forms symbiotic relationships with various plants. It is found in the coralloid roots of Cycas, the thallus of the liverwort Anthoceros, and the stems of Gunnera (misspelled as gunnena).

The inflorescence of a coconut palm is a spadix, which is a spike with a fleshy axis enclosed by a large bract called a spathe. Because it is branched, it is specifically classified as a compound spadix.

Pseudomonas putida is a genetically engineered bacterium widely recognized for its ability to degrade hydrocarbons, making it useful for bioremediation in oil spill cleanup.

The diploid chromosome number (2n) for common rice (Oryza sativa) is 24.

Penicillin acts by inhibiting the cross-linking of peptidoglycan chains in the bacterial cell wall, which leads to cell lysis. Other options like Streptomycin and Tetracycline target protein synthesis.

Producers (autotrophs) are the organisms that capture solar energy and inorganic nutrients from the environment to create organic matter, which then enters the food chain.

Restorer genes are nuclear genes that suppress the effects of cytoplasmic male sterility, allowing the plant to produce functional pollen. Therefore, they are located in the nucleus.

Chiasmata are the X-shaped regions where homologous chromosomes remain attached during prophase I of meiosis, marking the site where crossing over has occurred.

The nucleolus is a dense, spherical structure within the nucleus that is associated with the nucleolar organizer region of specific chromosomes.

Acetabularia is a large, single-celled green alga with a shape resembling a wine glass, which is why it is commonly referred to as the Mermaid's Wine Glass.