Explanation

Calcium is the most abundant mineral in the human body, making up 1.5 to 2% of the total body weight.

Approximately 1,200 g of calcium is present in the body of an adult human; more than 99% of that amount is found in bones.

Explanation

"Carnivore" refers to an animal that primarily eats flesh.

Herbivores, which eat plants.

Omnivores, which eat both plants and meat.

Explanation

Arachnids, such as spiders and scorpions, are distinguished by having eight legs, a characteristic feature of this class.

Explanation

The endosymbiont hypothesis suggests that mitochondria and chloroplasts originated as free-living bacteria that were engulfed by ancestral eukaryotic cells.

The presence of their own DNA and similarities with certain bacteria strongly support this hypothesis.

Explanation

In incomplete dominance, the heterozygous phenotype is intermediate between the two homozygous phenotypes.

The F2 generation from a cross between two heterozygotes will show a 1:2:1 phenotypic ratio, where one part shows the dominant trait, two parts show the intermediate trait, and one part shows the recessive trait.

Explanation

Vitamin C is essential for collagen synthesis.

It acts as a cofactor for the enzymes involved in stabilizing and cross-linking collagen fibers

Which are vital for the structure of skin, blood vessels, and other connective tissues.

Explanation

In the Linnaean system of classification, the order is a rank below class and above family.

It groups organisms that share common characteristics.

Explanation

The law of independent assortment states that genes for different traits are distributed to gametes independently of one another, leading to a variety of genetic combinations in the offspring.

Explanation

The central atom of hemoglobin is iron, which binds to oxygen in the blood.

Hemoglobin is a protein in red blood cells responsible for transporting oxygen from the lungs to the rest of the body.

Explanation

Pteridophytes, such as ferns, are vascular plants that reproduce via spores rather than seeds.

They have a well-developed vascular system for transporting water and nutrients, distinguishing them from non-vascular bryophytes.