Share Answer Biomass takes into accounts both the size of the individual organisms and their numbers. The pyramid of biomass thus gives the accurate picture of the relationship between the organisms at the various tropic level in a food chain is just a mode of nutrition and its not relevant in this context (D).

Share Answer Homiotherms (Greek: homois: similar) animals keep their body temperature more or less constant, regardless of their surrounding (B).

Share Answer Relative humidity is the measurement of the amount of moisture in the air and is determined by using a wet and dry bulb hygrometer (D).

Share Answer Lichen is as a result of symbiosis relationship association between fungi and algae plant. It is the first stage of ecological succession. Lichen is the simplest of the options. (C).

Share Answer Hydrophytes or aquatics live in fresh water and show a number of adaptation to their environment. Xerophytes are plants which can survive in place where water supply is limited. Epiphytes are involved in commensalism. Halophytes means plant in halides environment that is contain salts of chloride (C).

Share Answer Miracidium larvae emerges and bores into foot of small Redia forms further larvae by internal propagation. Cercavia escapes from snail through pulmonary aperture. Encysted cercaria adheres to blade of grass in wet pasture land and get into man. (A).

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Malphigian tubule is the excretory organ in insect (B).

Share Answer The blood is transported to the Kidney through the artery and leaves the Kidney through Renal vein (C).

Share Answer Flatworms are platyhelmintlies (C).

Share Answer Thyroxine is complex compounds which include iodine. An animal not producing enough becomes slow, may not grow to its proper size (cretinism) (B).