Explanation

Snails are mollusks, belonging to the phylum Mollusca.

They typically have a soft body and, in many cases, an external shell.

Explanation

Spiders, ticks, and mites belong to the class Arachnida.

They are characterized by having eight legs and a body divided into two main segments.

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

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

Epistasis occurs when the expression of one gene is affected by another gene at a different locus.

This interaction can mask or modify the effects of the other gene, leading to variations in phenotypes.

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.

Explanation

Phenotype refers to an individual's observable traits, such as height, eye color and blood type

A person's phenotype is determined by both their genomic makeup (genotype) and environmental factors.