STD 12 - 12. ecosystem — NEET STD 11 Science — Question

$R$ : Pyramids actually does not explain the role of organisms working at more than one trophic levels.

$(1)$ Carbohydrates are generally used as substrates for respiration.

$(2)$ Fatty acids first can degraded into acetyl $Co$ $A,$ which enter into the respiratory pathway.

$(3)$ In case of proteins, they are first broken down into amino acids which later converted in pyruvic acid and enter respiratory pathway

$ (4)$ The respiratory pathway is involved in both anabolism and catabolism.

$(5)$ Glycerol would enter the pathway after being converted to $PGAL. $

$I.$ It does not help in water conduction.

$II.$ It is also called alburnum.

$III.$ It is dark in colour but very soft.

$IV.$ It has tracheary elements, which are filled with tannin, resin, etc.