Primary producers generally form the smallest trophic level of a pyramid of energy. select the best answer from the choices provided t f

Correct False

Pyramid of energy is always upright because when energy flows from one trophic level to another trophic level, some amount of energy is always lost as a heat, which is lost to the atmosphere and it never comes back.

Therefore the primary consumers get 10% of energy from the autotrophs and secondary consumers obtain 1% of energy and that of tertiary consumers get 0.1%. It shows that top consumers receive least energy.

Hence, the given statement is false.

answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.