How well do you understand living things and their vital processes? Whether you are preparing for JAMB, WAEC, NECO and Post-UTME, these Biology past questions and answers cover such subjects as the chemistry of life, botany, evolution, genetics, ecology etc to help you know what to expect, improve your speed and confidence and be really prepared for the actual aptitude test.
xanthophyll
chromatophores
chlorophyll
melanin
Correct answer is B
Chromatophores are cells that produce color. Many types are pigment-containing cells, or groups of cells, found in a wide range of animals including amphibians, fish, reptiles, crustaceans, and cephalopods.
Mammals and birds, in contrast, have a class of cells called melanocytes for coloration.
Which of the following animals is most adapted for water conservation?
earthworms
mammals
flatworms
insects
Correct answer is D
Insects are widespread and adapted to all types of environment, even the driest and hottest places on earth.
The part of a domestic fowl responsible for preventing heat loss is the?
filoplume
contour feather
down feather
quill
Correct answer is C
Down feathers are those that help keep the bird's body warm. They are soft and fluffy, and are found on the inner side of the body.
Plants that grow in an area that is neither too wet nor too dry are
xerophytes
mesophytes
epiphytes
hydrophytes
Correct answer is B
No explanation has been provided for this answer.
A health condition that is known to have resulted from gene mutation is
typhoid
rabies
sickle-cell anaemia
sleeping sickness
Correct answer is C
No explanation has been provided for this answer.