because they just cant
Plants donÕt have a circulatory system like animals, but they do have a sophisticated transport system for carrying water and dissolved solutes to different parts of the plant. This transport system includes Epidermis, Cortex, Vascular tissue, pith, and pericycle
It is to allow substances like dissolved mineral salts and water to be taken in and transport around the plant so that the plant is able to produce food ( sucrose and amino acids ), to keep the plant surviving.
All known animals need a shelter of some form.
plants need soil and animals need food
Some molecules are too large to pass through the cell membrane without transport proteins.
The glands of the endocrine system transport hormones in the body. Some of those glands are the thyroid, adrenal, and pituitary glands.
Most do. Some desert animals get all the moisture they need from their diet.No.
Animals without blood systems tend to be very small. Some are single cells and others have very few layers of cells. This means that diffusion is fast enough to supply the cells with what they need. Some slightly larger animals like insects use a fluid called hemolymph which is pumped into and out of chambers which surround the organs.
Some animals have no need of them, jellyfish for instance. Others have an exoskeleton, insects are an example.
Some animals need better senses because they may have more predators or prey.
Water in animals serves as a solvent for essential nutrients and minerals, aids in digestion and metabolism, helps regulate body temperature through perspiration and evaporative cooling, and is crucial for maintaining cell structure and function. Additionally, it serves as a lubricant for joints and organs, and supports the transport of oxygen and nutrients in the bloodstream.
All living things need water. It is used to absorb nutrients, release wastes, and transport signals from one part of an organism to another. Some animals get all of their water from food, but most need to drink. Zebras are a type of animal that needs to drink water.