PROSPECTUS ACTUAL EXAM PAPER 2026
QUESTIONS WITH ANSWERS GRADED A+
◍ Postzygotic reproductive isolating mechanisms and examples.
Answer: Mating can occur but the zygote is in viable (ex. infertile)
◍ 2.5.
Answer: percentage of freshwater on the Earth
◍ Which of the following the closest the first life probably appeared on
earth?a) btw 4.6 and 4.2 byab) btw 3.8 and 3.5 byac) btw 2.5 and 2.1 bya.
Answer: b) between 3.8 and 3.5 billion years ago
◍ Prezygotic reproductive isolating mechanisms and examples.
Answer: Prevent two individuals from reproducing together because zygotes
cannot be formedDue to behavioral isolate due to differences in courtship
rituals or mechanical isolation in which the reproductive parts do not fit
◍ habitat.
Answer: an area where an organism lives.
◍ population ecology.
Answer: The study of populations in relation to their environment
◍ What is the correct sequence from the most to the east comprehensive of the
major taxonomic levels:phylum, domain, kingdom, class, species, genus,
family, order.
Answer: Domain - kingdom - phylum - class- order - family - genus -
species DKPCOFGS - Dear King Philip Came Over for Good Spaghetti
◍ littoral zone.
Answer: area closest to the shore in lakes and ponds
,◍ demography.
Answer: The study of human population size, density, distribution,
movement, and birth and death rates
◍ long term carbon cycle.
Answer: cycle where plants and animals die depositing carbon in the ground
◍ Independent variable.
Answer: Variable that is changed
◍ mountains.
Answer: such as temperature and precipitation, change with increasing
elevation
◍ boreal forest.
Answer: summers are short and moist; winters are long, cold, and dry
◍ assimilation.
Answer: the process of plants absorbing phosphorus through their root hairs
◍ desert.
Answer: varying temperatures; low rainfall
◍ temperate forest.
Answer: well-defined seasons; summers are hot, winters are cold
◍ ecology.
Answer: is the scientific study of the distribution and abundance of life and
the interactions between organisms and their environment.
◍ population range.
Answer: he geographic area where a species lives
◍ Ionizing Radiation is characterized by ______ frequencies and ________
wavelength to produce high energy.
Answer: High frequency and short wavelengthsEx. X-rays and Gamma rays
◍ Polyploidy.
Answer: Extra sets of chromosomes
,◍ Cytoskeleton.
Answer: Provides structure and movement
◍ density-independent factor.
Answer: Any factor in the environment that does not depend on the number
of members in a population per unit area
◍ zone of intolerance.
Answer: zone where organisms cannot survive
◍ biological magnification.
Answer: occurs when toxins become more concentrated in successive levels
of a food web
◍ short term carbon cycle.
Answer: Plants convert carbon in the air to organic matter
◍ Defined Media.
Answer: Media in which all components of the mix are known
◍ Bacterial Growth Stage 1: Lag Phase.
Answer: Time after the new introduction of bacteria on a new medium with
no growth
◍ limiting factor.
Answer: Any abiotic factor or biotic factor that restricts the numbers,
reproduction, or distribution of organisms
◍ Intra-specific vs Inter-specific competition.
Answer: Intraspecific: between individuals of single speciesInterspecific:
between individuals of two species
◍ tropical savanna.
Answer: summers are hot and rainy; winters are cool and dry
◍ tropical seasonal forest.
Answer: rainfall is seasonal
◍ Hardy Weinberg equilibrium.
, Answer: No evolution occurs when conditions are stable
◍ biological community.
Answer: a group of interacting populations that occupy the same geographic
area at the same time.
◍ In the earliest chordates, pharyngeal slits appear to have function first not as
gill slits primarily but as,.
Answer: Suspension feeding devices
◍ ecosystem.
Answer: a biological community and all of the abiotic factors that affect it.
◍ In a phylogeny, paraphyly is when.
Answer: there is a shared node but not a complete grouping
◍ Amphiphilic Molecule.
Answer: Molecule with a hydrophobic and hydrophilic region
◍ organism.
Answer: an individual living system
◍ ________ speciation occurs when a population diverges genetically into two
different lineages despite there being is geographic barrier dividing them.
Answer: Allopatric
◍ heterotrophs.
Answer: get their energy by consuming other organisms
◍ climate.
Answer: The average weather conditions in an area
◍ Activation energy.
Answer: The energy required to start a chemical reaction
◍ niche.
Answer: the role or position that an organism has in its environment.
◍ The ______ germ layer led to the future formation of lungs, liver, pancreas,
and lining of the digestive tract.