The alimentary canal, or digestive tract, is a continuous tube running from the mouth to the anus, comprising organs like the esophagus, stomach, intestines, and involved in food digestion and absorption.

Milk teeth, or deciduous teeth, are the first set of teeth in infants, emerging around 6 months. They typically fall out between ages 6 to 12, replaced by permanent teeth.

In a symbiotic relationship, organisms live together and share shelter, nutrients, and other resources for mutual benefit.

Cuscuta, also known as dodder, is a parasitic plant that depends on host plants for nutrients, as it lacks chlorophyll and cannot photosynthesize on its own.

The Cuscuta plant does not have chlorophyll, which is why it relies on other plants (hosts) for nutrients. It does have stems and roots, although its roots are specialized to penetrate the host plant.

The presence of starch in a leaf indicates that photosynthesis has occurred, as starch is produced as a result of the plant converting glucose (produced during photosynthesis) into a storage form.