Question

please answer the following questions
a. if the solubility of a solute is S,find it's percentage by weight
b. name two non-leguminous plants which can fix free nitrogen
c. what is the scientific name of .a. feather star. b. apple snail
d. colenterata is also called cnidaria. give reasons
e. state the role of epidermis in plant

Answer 1

• (b)In the order Rosales, in addition to actinorhizal nitrogen-fixing plants, Parasponia species (family Cannabaceae,) also display an original nitrogen-fixing root symbiosis (Sytsma et al., 2002). Parasponia is the only non-legume host plant known to be nodulated by rhizobia (Trinick, 1973; Akkermans et al., 1978).

• (c)(b)Ampullariidae and (a)Crinoidea
• (d)Coelenterata is an obsolete term encompassing the animal phyla Cnidaria (coral animals, true jellies, sea anemones, sea pens, and their allies) and Ctenophora (comb jellies). The name comes from the Greek "koilos" ("hollow") and "enteron" ("intestine"), referring to the hollow body cavity common to these two phyla.
• (e)It forms a boundary between the plant and the external environment. The epidermis serves several functions: it protects against water loss, regulates gas exchange, secretes metabolic compounds, and (especially in roots) absorbs water and mineral nutrients.
• (a)S/S+100