Question 1 of 20 5,032 total questions
The conversion of a nutrient into a molecule in the body of a consumer is referred to as
A digestion
B assimilation
C absorption
D inhibition
Which of the following is true of leucocytes?
A they are respiratory pigments
B they are most numerous and ramify all cells
C they are large and nucleated
D they are involved in blood clotting
Which of the following can cause shrinkage of living cells?
A Hypotonic solution
B Isotonic solution
C Deionized water
D Hypertonic solution
An example of an endospermous seed is
A maize gain
B cashew nut
C cotton seed
D been seed
The adaptive importance of nuptial flight from termite colonies is to
A disperse the reproductives in order to establish new colonies
B provide abundant food for birds and other animals during the early rains
C ensure cross-breeding between members of one colony and another
D expel the reproductives so as to provide enogh food for other members
In which of the following groups of vertebrates is parental care mostly exhibited ?
A Reptilia
B Amphibia
C Aves
D Mammalia
Seed plants are divided into
A trachephytes and ferns
B angiosperms and gymonsperms
C monocotyledons and dicotyledons
D thallophytes and bryophytes
The function of the red head in male Agama lizards is to
A conceal and camouflage the animal from predators
B scare other males from the territory
C attract female lizards for mating purposes
D warm predators of the distastefulness of the animal
Which of the following animals exhibits territoriality?
A Rabbit
B Earthworm
C Lizard
D Toad
Which of the following statements reflects the mechanism of natural selection?
A There are variations within every species
B Individuals of every species are genetically identical
C No organism in a species dies before sexual maturity
D Organisms with selective advantages are less likely to survive
In evolution, analogous structures are significant because they show
A physiological diversity
B functional diversity
C genetic diversity
D structural diversity
The importance of courtship in animals includes the following except
A ensuring that the female chooses the right male species
B arousing both male and female partners
C protection of territory
D to coincide with the ovulation period and ensure fertilization
The percentage probability that a normal male married to a carrier woman would have a haemophilic male child is
What would be the phenotypic ratio of the offspring of a cross between a heterozygous dominant parent and a double recessive parent?
A 1 : 2: 1
B 1 : 1
C 3 :1
D 2 : 1
Mr. Andrew, his wife and child belong to blood groups A, B and O respectively. The genotypes of both parents are
A IA IO and IB IB
B IA IA and IB IB
C IA IB and IA IO
D IA IO and IB IO .
Which of the following statements is correct about the structure of a chromosome? A chromosome consists of
A two chromatids joined at the centromere
B Two chromatids joined at the spindle
C Two chromatin threads joined at the centrioles
D thread-like structures not joined together
In a family of eight (8) all the children are girls Which of the following reasons correctly explains this?
A The woman cannot produce male children
B The man has a low sperm count
C The Y component of the man’s sex chromosome was always involved
D The X component of the man’s sex chromosome was always involved.
In artificial selection, individuals without desirable traits may be prevented from mating by
A outbreeding
B sterilization
C inbreeding
D genetic engineering
An example of a saprophytic relationship is a / an
A vulture feeding on decaying meat
B mushroom growing on decaying vegetation
C boy eating stale bread
D earthworm feeding on decaying vegetation.
Which of the following statements about heredity is not true? In heredity the traits are
A carried by genes
B contained in the ovum and sperm
C always transmitted by one parent
D transmitted from parents to offspring
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