Answer:
The importance of pigment in photosynthesis is that it helps absorb the energy from light. The free electrons at the molecular level in the chemical structure of these photosynthetic pigments revolve at certain energy levels.
Explanation:
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Heartwood. In contrast to sapwood, a term for the dead, clogged xylem cells near the center of a tree. Heartwood is the tree's main column of support.
Answer:
A callus is a hardening of skin, keratin is the protein which is abundant in callus. Skin is a protective layer against a external environment. Outer layer of skin consist of keratin which is also found in hair. Callus is the accumulation of dead cells result due to friction and pressure exerts on the part in which they are present. The keratin component (keratinocytes) remains undifferentiated in these dead cells which causes hardening in callus.
<span>Lymbic syste. These three parts are seen under the cerebrum as on both sides of thalamus. The function of these parts include controlling memories and emotions. It is a complex system of neurons. Hypothalamus is concerned primarily with homoeostasis, Hippocampus is the centreof memories and amygdala is sudden responses.</span>
