Potassium deficiency often results in leaf curling and marginal leaf scorch, indicating poor water regulation.

Both mutation and gene flow contribute to genetic variation in a population, providing the raw material for evolution.

All of the options listed (mutation, gene flow, and sexual reproduction) are sources of genetic variation in populations.

Organic farming is considered a sustainable practice as it promotes biodiversity and reduces chemical inputs.

Frequent urination is a common symptom of diabetes due to high blood sugar levels.

High fever is a common symptom of malaria, caused by Plasmodium parasites.

Necrosis of leaf tips is a common symptom of potassium deficiency, as potassium is vital for various physiological processes.

A persistent cough is a common symptom of tuberculosis, along with other respiratory issues.

The Sanger method is a widely used technique for DNA sequencing, allowing for the determination of the nucleotide sequence of DNA.

Pine is a type of gymnosperm, known for its needle-like leaves and cones.

Moss is a type of non-vascular plant, classified under bryophytes.

rRNA (ribosomal RNA) is a type of RNA that is a key component of ribosomes, facilitating protein synthesis.

miRNA (microRNA) is a type of RNA that plays a role in regulating gene expression by binding to mRNA.

Paramecium is a unicellular eukaryote.

Paramecium is a unicellular eukaryotic organism.

Euglena is a unicellular organism.

Malaria is transmitted by the female Anopheles mosquito, which acts as a vector.

Dengue fever is transmitted by Aedes mosquitoes.

Urea is a waste product formed from the breakdown of proteins and is excreted in urine.

Abiotic factors are the non-living physical and chemical components of an ecosystem, such as temperature.

Plants are a biotic factor as they are living organisms that interact with other organisms in the ecosystem.

Fungi are decomposers that break down dead organic matter, returning nutrients to the soil.

Density-dependent factors, such as disease, have a greater effect as the population density increases.

A dihybrid cross involves two traits, and AaBb x AaBb is an example of such a cross.

Golden rice is a genetically modified organism enriched with vitamin A to combat malnutrition.

Bt corn is genetically modified to express a bacterial protein that provides resistance to certain pests.

Elephants are considered a keystone species because they play a critical role in maintaining the structure of their ecosystem.

Bees pollinating flowers is a mutualistic relationship where both species benefit from the interaction.

A rabbit is an example of a primary consumer as it feeds on plants (producers).

Color blindness is a sex-linked trait, primarily located on the X chromosome, affecting males more frequently than females.