BIOLOGY (POST JAMB)
BIOLOGY (POST JAMB)
Which of the following is a behavioural adaptation that protects prey from predators?
Explanation to the correct answer
Secreting irritating fluid is a behavioural adaptation that keep/protects preys from predators.
The period of inactivity seen in some animals during long period of heat or drought is
Explanation to the correct answer
Aestivation is a period of no activity seen in some animals during period of heat or drought.
The insect trapping movements of the leaves of the venus fly trap is a behavioural adaptation for
Explanation to the correct answer
When an insect traps movement of leaves, it is a behavioural adaptation for obtaining food.
Animals are said to gregarious when
Explanation to the correct answer
Gregarious animals are the same species of animal moving together in group.
The type of nutrition shown by spirogyra is
Explanation to the correct answer
Spirogyra undergoes holophytic nutrition
Raw materials required by green plants to manufacture their food are
Explanation to the correct answer
One of the raw materials needed by plants to manufacture their food is inorganic substances
Which of the following pairs of organisms are photosynthetic?
Explanation to the correct answer
Euglena and chlamydomonas are photosynthetic because the possess features of plants which enables them to produce their food.
The type of nutrition in which two organisms of different species live together and derive nutrients from each other is
Explanation to the correct answer
Symbiotic nutrition involves two organisms of different species living together and deriving nutrients from each other
Which of the following statement about the similarities in plant and animal transport is correct?
Explanation to the correct answer
One of the similarities in plant and animal transport is that materials and hormones are transported in fluid form in both.
Which of the following describes the function of lymph
Explanation to the correct answer
Lymph serves as body defence.
One of the major ways in which the blood is able to defend the body against disease causing organisms is
Explanation to the correct answer
One of the major ways in which the blood is able to defend against disease is clumping.
Which of the following is not a transmitable character in plants
Explanation to the correct answer
Haemophilia is any of several hereditary illnesses that impact the body's ability to control bleeding usually passed from mother to son.
Inheritable character/features possessed by an organism can be referred to as
Explanation to the correct answer
Trait is an inheritable character/inheritable feature possessed by an organism.
One of the following is a process of transmission of hereditary characteristics by chromosomes
Explanation to the correct answer
Dictating the formation of a protein by a gene in a chromosome is a process of transmitting hereditary characteristics
The attachment of the embryo to the wall of the uterus is called
Explanation to the correct answer
Implantation is the attachment of embryo to the uterus wall.
Which of the reproductive system in mammals secretes a part of the seminal fluid which raises the pH of the fluid in the female reproductive system?
Explanation to the correct answer
Cowper's gland is a reproductive system in male which secretes a part of the seminal fluid which raises the pH of the fluid in the female reproductive system.
A flowering plant having both the male and female flowers on the same plant is said to be
Explanation to the correct answer
Flowering plants having both the male and female flowers on the same flower are called Monoecious plants
Which of the following factors is not considered in a terrestial habitat?
Explanation to the correct answer
Turbidity is not a factor in terrestrial habitat it is a factor in aquatic habitat because turbidity also means cloudy which is an aquatic factor.
One important characteristics of green plant is that they
Explanation to the correct answer
One of the important characteristics of green plant is that they can manufacture their food (Autotrophic).
A virus can sometimes be regarded as a living organism because it
Explanation to the correct answer
A virus is regarded as animate is because it can reproduce in living cells. It can also be inanimate when it is not in living cells.
A population is best described as
Explanation to the correct answer
A population is described as the total number of organisms of the same species living together in a given area at a particular time.
The number of times an organism occurs within a given area of a habitat is referred to as
Explanation to the correct answer
Population frequency refers to the number of times an organism occurs within a given area of a habitat
Reading the verdict of a case by a magistrate is an example of
Explanation to the correct answer
A voluntary action is controlled by the cerebrum in the forebrain which is the largest part of the brain.
Which of the following structures controls the activities of the living cell?
Explanation to the correct answer
Nucleus is a part of living things which controls activities due to the presence of the DNA in it.
Which of the following are components of glomerular filtrate?
Explanation to the correct answer
Glomerular filtrate contains H2O, glucose, salts and urea and it is identical to blood plasma that lacks most proteins.
The sum total of adaptive changes from pre-existing form that have taken place over a long time resulting in diversity of forms, structures and functions among organism is referred to as
Explanation to the correct answer
Organic evolution is the sum total of adaptive changes from pre-existing or old form that have taken place over a long time resulting in diversity of forms, structures and functions among organisms.
The specific portion of a habitat which is occupied by a particular species is referred to as
Explanation to the correct answer
Ecological niche refers to the specific portion of a habitat which is occupied by a particular species or organism. It is the functional position of an organism within the community.
In plants, respiration occurs in
Explanation to the correct answer
Respiration can either be aerobic or anaerobic respiration. Hence, in plants, all living cells take part in a form of respiration. Plant respiration is a rather diffuse process. It occurs all over the plant.
Which of the following is an example of discontinous variatio?
Explanation to the correct answer
Discontinuous variation is the differences of variations in behaviour by which organisms can be grouped into 2 or more classes within a population without any intermediates among them e.g Behaviour, ability to roll tongue.
Which of the following type of soil has the highest water retaining capacity?
Explanation to the correct answer
Clay soil is the soil with highest water retaining capacity.
Rabbits cannot survive in an aquatic habitat because they have
Explanation to the correct answer
Rabbits does not have the adaptive features of an aquatic habitat like gills therefore, it cannot survive in an aquatic habitat.
Which of the following substances pass through the root cell membrane by osmosis?
Explanation to the correct answer
Water passes through the root cell membrane of plant in order for osmosis to take place.
Trees in Savanna habitats usually have thick bark which mainly.
Explanation to the correct answer
Rate of transpiration is reduced in savannah forest due to thick barks of the trees in savannah forest.
Competition among individuals of a population increases the
Explanation to the correct answer
Competition one of the biotic factors in ecological factors involves the interactions among two organisms of the same species/different species which outgrows the other and survives while the other cannot grow or survive
In natural selection, Darwin proposed that evolution occurred because of the following conditions except
Explanation to the correct answer
In natural selection, Darwin proposed that evolution occurred because of the following conditions except food and other needs are abundant
Which of the following substances has the highest amount of energy in joules per unit weight?
Explanation to the correct answer
Fats provides more energy to animal than carbohydrates therefore containing the highest amount of energy in joules per unit weight.
Which of the following pairs of scientists discovered the Rhesis factor in human blood?
Explanation to the correct answer
Landsteiner and Lavine are scientist, they discovered the Rhesus factor in human blood.
The study of an individual organism or a single species of organism and its environment is
Explanation to the correct answer
Artecology is the study of an individual organism or a single specie of organism and no environment
Which of the following is a nitrifying bacterium?
Explanation to the correct answer
Nitrobacter are chemoautrophic organisms found in soil and water responsible for the oxidation of ammonium to nitrite and nitrite to nitrate.
Which of the following is the effect of using artificial pollination in plant breeding?
Explanation to the correct answer
One of the effect of using artificial pollination in plant breeding is that it improves the variety of crops.
Only specially adapted micro-organisms are found in
Explanation to the correct answer
Halophiles are organisms that thrive in high salt concentrations. The adaptations of halophile organisms to their environment are:
(a) The integrity of non-halophile macromolecules is compromised, and the flow of water out of the cell produces a Turgor effect. • (b) Moderate halophiles maintain their structures via the synthesis of compatible organic solutes. • (c) Extreme halophiles maintain their structures via equilibration of cellular and environmental salt concentrations.
Plants which can survive in extremely dry places are called
Explanation to the correct answer
They are called Xerophyte because they are species of plant that has adaptations/adaptive features like waxy cuticles which enables them to survive in extremely dry land.
The presence of ______ for swimming in a tad-pole enables it to adapt in an aquatic habitat.
Explanation to the correct answer
Tadpole's ability to swim and adapt to an aquatic habitat is due to the presence of its tail.
Possession of thin membrane enables a tapeworm to
Explanation to the correct answer
The tapeworm possesses a thin membrane mostly because of it absorption of digested food from the intestine of the host.
Which of the following juices contains the enzyme ptyalin?
Explanation to the correct answer
The saliva contains an enzyme called ptyalin which helps to hydrolysis of starch to maltose partially
Which of the following essential substance is contained in vegetable?
Explanation to the correct answer
Vegetable contains mineral salts like magnesium, copper etc which is very essential for body growth.
Good quality food will perform the following functions in human except
Explanation to the correct answer
Good quality food cannot provide resistance to malaria because it does not contain anti-malaria substance it only and good propr growth.
Which of the following is considered to be the first product of Photosynthesis?
Explanation to the correct answer
Starch is the main and first product formed during photosynthesis because the simple sugar formed is partly used by the plant and excess of it is converted into starch immediately for storage and the starch is transported to other parts of the plant through the phloem vessels for storage.
Which of the blood corpusles are irregular and amoeloid in shape
Explanation to the correct answer
Leucocytes are also called white blood cell. They are irregular and amoebaoid in shape.
Which organ removes the largest quantity of water from the blood?
Explanation to the correct answer
Kidney is an organ that perform lots of function one of which it helps in removing large quantity of water from the blood in order to maintain normal balance in the body system