2018 - JAMB Biology Past Questions and Answers - page 5
The yellowish colored liquid component of blood that normally holds the blood cells in suspension is
The function of pith in plant is
A pollutant that is mostly associated with acid rain is
What it the function of contractile vacuole in paramecium
An organism which exhibit extracellular digestion is
Extracellular digestion is a process in which saprobionts feed by secreting enzymes through the cell membrane onto the food. The enzymes catalyze the digestion of the food into molecules small enough to be taken up by passive diffusion, transport, or phagocytosis. Rhizopus use extracellular digestion.
How many days does is used for incubation of an egg to release chick
On the 21st day of incubation the chick finishes its escape from the shell. The initial break in the shell is made by the egg tooth. This is referred to as external pipping
The four classes of cnidarian include the following except
Anthozoa, which includes true corals, anemones, and sea pens;
Cubozoa, the amazing box jellies with complex eyes and potent toxins;
Hydrozoa, the most diverse group with siphonophores, hydroids, fire corals, and many medusae; and
Scyphozoa, the true jellyfish. ucmp.berkeley.edu
What would happen if solution Y is more concentrated than solution X in fig 2
Osmosis is the spontaneous net movement of solvent molecules through a selectively permeable membrane into a region of higher solute concentration, in the direction that tends to equalize the solute concentrations on the two sides
The implication of this is that the level of Y (region of higher concentration) would rise, X (region of lower concentration) would fall to equalize the solute concentrations on the two sides.
Physiological adaptation to very dry conditions in animal demonstrates
Xeromorphic describe the structural modifications of certain plants (xerophytes) that enable them to reduce water loss, particularly from their leaves and stems.
Hibernation is a state of inactivity and metabolic depression in endotherms. Hibernation refers to a season of heterothermy characterized by low body temperature, slow breathing and heart rate, and low metabolic rate