Iron is crucial for chlorophyll synthesis and is involved in various enzymatic reactions in plants.

Sulfur is a key component of certain amino acids, which are the building blocks of proteins.

'Survival of the fittest' is a phrase often associated with Darwinism, which emphasizes the role of natural selection in evolution.

'Survival of the fittest' is a phrase often associated with Darwinism, which emphasizes natural selection as a key mechanism of evolution.

'Survival of the fittest' is a phrase often associated with Charles Darwin's theory of natural selection, emphasizing that those best adapted to their environment are more likely to survive and reproduce.

The pistil is the female reproductive part of the flower, consisting of the ovary, style, and stigma.

The five-kingdom classification system was proposed by Robert Whittaker.

Fertilization is the process where the male gamete (sperm) fuses with the female gamete (egg) to form a zygote.

The stigma is the part of the pistil that receives pollen during fertilization.

Taxonomy is the scientific study of classification of organisms.

Lamarckism is the theory that organisms can pass on traits acquired during their lifetime, which has been largely discredited in favor of Darwinian evolution.

Viruses are considered non-living entities as they cannot carry out metabolic processes independently.

Gibberellins promote seed germination by breaking dormancy and stimulating the growth of the embryo.

Salivary amylase is the enzyme that begins the digestion of carbohydrates in the mouth.

During telophase, the nuclear envelope re-forms around the separated chromosomes, and spindle fibers disappear.

Insulin is the hormone produced by the pancreas that lowers blood glucose levels by facilitating the uptake of glucose into cells.

Insulin is the hormone produced by the pancreas that lowers blood sugar levels by facilitating the uptake of glucose into cells.

Adaptive radiation is the rapid evolution of many species from a common ancestor, often occurring when species colonize new environments with diverse ecological niches.

Binomial nomenclature is a two-part naming system for organisms, consisting of the genus and species names.

Carrying capacity is the maximum number of individuals of a species that an environment can sustainably support.

Genetic drift refers to changes in allele frequencies in a population due to random sampling of organisms, which can lead to significant changes over time, especially in small populations.

Ovulation is the process of releasing an egg from the ovary, which is a key event in the female reproductive cycle.

Parthenogenesis is a form of asexual reproduction where an embryo develops from an unfertilized egg, and it is considered a type of asexual reproduction.

The average duration of a human menstrual cycle is approximately 28 days.

Red blood cells typically have an average lifespan of about 120 days before they are removed from circulation by the spleen.

The average volume of blood in an adult human body is approximately 5 to 6 liters.

The basic structural and functional unit of an animal's body is the cell.

The basic structural and functional unit of life in animals is the cell.

The cell is the basic structural and functional unit of life, as it is the smallest unit that can carry out all life processes.

The basic unit of classification in biology is the species, which is defined as a group of organisms that can interbreed and produce fertile offspring.