2019 - JAMB Biology Past Questions and Answers - page 5

Halophiles, named after the Greek word for "salt-loving", are extremophiles that thrive in high salt concentrations. While most halophiles are classified into the domain Archaea, there are also bacterial halophiles and some eukaryotic species, such as the alga Dunaliella salina and fungus Wallemia ichthyophagous. 

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A xerophyte is a species of plant that has adaptations to survive in an environment with little liquid water, such as a desert or an ice- or snow-covered region in the Alps or the Arctic. Popular examples of xerophytes are cacti, pineapple and some Gymnosperm plants. Wikipedia

Tadpole's ability to swim and adapt to an aquatic habitat is because it has a tail

The tapeworm possesses a thin membrane because of the absorption of digested food from the intestine of the host.

Saliva contains the enzyme amylase, also called ptyalin, which is capable of breaking down starch into simpler sugars such as maltose and dextrin that can be further broken down in the small intestine.

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Vegetable contains mineral salts like magnesium, copper and other substances which are very essential for body growth.

Good quality food cannot provide resistance to malaria because being of good quality food does not mean it contains anti-malaria substances.

The first product of photosynthesis is sugar and it is converted into starch in all plants. The initial process of photosynthesis is the decomposition of water into oxygen, which is released and hydrogen. Direct light is required for this process.

Leucocytes, also called white blood cells, are irregular and amoeboid in shape.

The kidney performs quite a number of function, including helping to remove large quantity of water from the blood in order to maintain normal balance in the body system