Water movement in xylem of plants is passive process that is driven by pressure and chemical potential gradients. Xylem is plant tissue that transports water from roots to leaves. This upward water flow (against the force of gravity) through the xylem of plants is possible because of water properties.
Cohesion refers to cohesive force between water molecules which attracts them towards each other. As a result surface tension in liquid water occurs.
Tension is the result of transpiration. Negative pressure is generated by the evaporation of water from the leaves (transpiration).
So, transpiration pull (via capillary action and the inherent surface tension of water) is responsible for water movement upwards.
is linked to the pituitary gland (both in the brain) which releases stimulating and inhibiting hormones which go to glands which are part of the endocrine system such as the thymus
Based on the options given, the most likely answer to this query is A. Some animals exhibit similar stages in embryonic development. Embryonic development is where a fertilized egg undergoes similar development with other animals.
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