This is an example of a physiological mechanism. A physiological mechanism is <u>an automatic mechanism that governs our body using our bodily organs to stay alive and functioning</u>. Other examples of physiological mechanisms include those we use for sleeping and regulate body temperature.
Plants also have structures that help them survive. Plants have different parts, like roots, stems, leaves, flowers, and fruit. These structures help them survive. Other plants have flowers that are the perfect shape for insects to visit and help with pollination. Some plants have really long roots that help the plant gather water from deep below the surface of the Earth. Plants that live in really dry areas, like a desert, have special leaves.
<h2>Hope this helps :D</h2>
Answer:
B i hope this help
Explanation:
The cell membrane consists primarily of a thin layer of phospholipids which spontaneously arrange so that the hydrophobic "tail" regions are shielded from the surrounding polar fluid, causing the more hydrophilic "head" regions to associate with the cytosolic and extracellular faces of the resulting bilayer. This forms a continuous, spherical lipid bilayer approximately 7 nm thick, barely discernible with a transmission electron microscope.
The arrangement of hydrophilic and hydrophobic heads of the lipid bilayer prevent polar solutes (e.g. amino acids, nucleic acids, carbohydrates, proteins, and ions) from diffusing across the membrane, but generally allows for the passive diffusion of hydrophobic molecules. This affords the cell the ability to control the movement of these substances via transmembrane protein complexes such as pores and gates.
cells in the vegetal half of the embryo should be unpigmented those in the animal half and there should be heavily pigmented.
Explanation:
The Yolk molecules moving in the vegetal halves of the egg which is the case in most of the animals, slows down the cell division. These lesser division area or the zone demarcates the area to be vegetal pole and due to lesser cell division, it becomes unpigmented or less pigmented Based on the observation time and perspect with assuming no movement.
The pole opposite to the vegetal, is animal pole which with absence or less of yolk, gets more ability to divide and hence become more pigmented or heavily pigmented. This brings polarity to the egg and becomes telolecithal egg.
<span>The correct option is B. Eukaryotic cells are developed cells with well defined structures. The organelles inside the cell are well compartmentalized, surrounded with their own membranes. These membranes make it possible for the organelles to regulates the movement of particles in and out of the cell.</span><span />
