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WorksheetsBIOnline exam
Total questions: 80
Worksheet time: 1hrs 24mins
Identity the correct sequence
a) species-phylum- order -Kingdom- Domain
b) genus-species -order -Domain- Kingdom
c)species -genus- order- phylum- Kingdom- Domain
d) class- order -phylum- Kingdom- Domain
Bentham and Hook published the book is
genera plantarum
species plantarum
systema naturae
both a and b
ICBN'S twelfth meeting held at
USA
USSR
UK
Britain
According to ICBN ,which is correct?
binomials are printed in italic and underlined
lf generic and specific names are same it is called ambiguous name
if naming of plant is from error source it is called tautonym
original description of plant should be
latin translation
The suffix that denotes the taxonomic category 'Family' in plants would be
-ae
-aceae
-ales
-nae
In__of higher animals and plants__and ___are mutually__events.
All, cell division, replacement, dependent
Majority, growth, reproduction, exclusive
All, growth, cell division, dependent
Majority ,cell division, replacement,exclusive
The scientific term for biological classification categories is the:
Species
Taxon
Phylum
Domain
Which of the following is less general in characters as compared to genus
species
family
class
division
Who modified the cell theory ?
Robert Hooke
Schawnn and Schielden
Rudolf Virchow
Singer and Nicolson
The cell organelle related to metamorphosis is ?
ER
Golgi Complex
Lysosome
Ribosome
Cell Membrane in eukaryotes comprises of
Carbohydrates only
Proteins and lipids only
Lipids only
Carbohydrates, proteins and lipids
Cell Membrane in eukaryotes comprises of
Carbohydrates only
Proteins and lipids only
Lipids only
Carbohydrates, proteins and lipids
Pick out prokaryote one ?
Marchantia
Amoeba
Ustilago
Puccinia
The cytoskeleton is important because
It gives the cell its shape
It strengthens the cells
It helps the cells move and divide
All of the above
Which of the following is the best description of an element.
a substance that cannot be broken down into simpler substances
a naturally occurring mineral made of more than one substance
a small particle made with a specific chemical composition
a collection of atoms that have different abilities when joined together
Centrosome and centrioles play a major role in
Cell movement
Cell division
Cell contraction
Cell membrane
What is the function of SA node?
Spread impulse to both atrium
Generate electrical impulse
Spread impulse to AV node
How long does impulse delayed at AV node
0.01s
0.1s
1.0s
0.001s
In a DNA if A is 20% then what is the quantity of C in the same DNA????
20
60
40
30
Energy is released from ATP when
a phosphate group is added
adenine bonds to ribose
ATP is exposed to sunlight
a phosphate group is removed
Which of the following results in the storage of energy in terms of the ATP/ADP cycle?
The breaking of the bond between the 5-carbon sugar and the 1st phosphate group
The addition of a phosphate group
The removal of a phosphate group
The addition of glucose
"Post office" of the cell that packages proteins and fats:
ER
Golgi Body
Nucleus
Cytoplasm
The 3 parts of the Cell Theory are...?
All living things are composed of cells
Cells are the basic units of structure and function in living things
All cells are produced from other cells
All living things are composed of cells
Cells are the basic units of dance and vibes in living things
All cells are destroyed from other aliens
All living things are composed of Jell-O
Cells are the basic units of structure and function in living things
All cells are produced from factories in Canada
All living things are composed of cells
Cells do karate and practice eating whole pies in their free time
All cells are produced from other cells
N- linked Glycosylation, O- linked glycosylation and porting sorting occurs in ?
All in Endoplasmic reticulum
Endoplasmic Reticulum, Nucleus and Ribosomes, respectively
Endoplasmic Reticulum, Golgi Bodies and Lysosomes, respectively
Endoplasmic Reticulum, Golgi Bodies and Golgi Bodies, respectively
All in Golgi Bodies
Who Proposed the term endoplasmic Reticulum ?
Porter and Kallman
De Duve
Singer Nicolson
Robert Hook
Which element of ER contains Ribosomes ?
Cisternae
Vesicles
Both A and B
None Of Above
GERL System involved organelles ....
Endoplasmic Reticulum
Lysosomes
Golgi Bodies
All of Above
Sarcoplasmic Reticulum is found in ..
Liver cells
Muscle cells
Kidney cells
Neurons
Which of the following statements are true regarding ER.?
SER is involved in lipid synthesis
ER provides structural framework to the cell
ER act as intracellular transporting system.
All of the above
Which is important in the creation and storage of lipids and steroids ?
Smooth ER
Rough ER
Lysosome
Mitochondria
What is a mesosome in a prokaryotic cell? What option is more correct??
formed by the extensions (in the form of vesicles, tubules and lamellae) of plasma membrane into the cell, involved in DNA replication.
formed by the extensions (in the form of vesicles, tubules and lamellae) of plasma membrane into the cell, help in respiration, and secretion processes
In some prokaryotes like cyanobacteria, there are other membranous extensions into the cytoplasm called chromatophores which contain pigments and distribution to daughter cells.
formed by the extensions (in the form of vesicles, tubules and lamellae) of plasma membrane into the cell, involved in cell wall formation, DNA replication, respiration, secretion processes to increase the surface area of the plasma membrane and enzymatic content.
Common characteristics of Echinoderms are
Tubed feet, no shell
spiky skin, have an exoskeloton
symmetrical body usually 5 sided, are plants
tubed feet, symmetrical body usually 5 sided
What percent of animals in the sea do invertebrates make up?
5%
90%
97%
75%
Which group are all the same classification?
lobster, coral, hermit crab
Shrimp, jellyfish , bluebottle
mussel, octopus, scallop
Sea cucumbers, starfish, pipi
Which statement best describes a gymnosperm?
A nonvascular plant with roots, stems, and leaves.
A low-growing nonvascular plant lacking true roots.
A vascular plant that uses spores to reproduce.
A vascular plant that uses pollen to produce seeds that are not enclosed in protective fruits.
Seedless vascular plants reproduce by...
Seeds
Spores
Pollen
Rhyzoid
Select all plant groups that are seedless vascular.
mosses
horsetails
hornworts
club mosses
ferns
Which of the following is NOT a characterstic of an organism in the plant kingdom?
has a cell wall and chlorophyll
are autotrophs
are heterotrophs
don’t physically move from one place to another
A Green plant must be able to perform three different processes in order to survive. What are they?
respiration, perspiration, photosynthesis
transpiration,respiration,photosynthesis
chlorophyll,photosynthesis, perspiration
Transcription,photosynthesis, chloroplast
What caused the Gulf of Mexico's Dead Zone?
over-fishing
a lot of trash flowed there
excess nutrients from farm fertilizer
a nuclear test was done there during WW2
In group living species, the term “dilution effect” refers to
(A) reduction in aggression among individuals with increasing group size
(B) reduction in the mobility of individuals with increasing group size
(C) reduction in the reproductive success of individuals with increasing group size
(D) reduction in the risk of predation of individuals with increasing group size
Which of the following diversity indices best captures species turnover across habitats?
(A) alpha
(B) beta
(C) gamma
(D) delta
A duck egg is removed from its mother’s nest and incubated by a barnyard hen. The duckling hatches out in the presence of the barnyard hen and stays in her nest. After a couple of days, the duckling is presented with a choice between its biological mother and the hen that incubated it. The duckling approaches and follows the hen.
This set of observations demonstrates the phenomenon of
(A) habituation
(B) imprinting
(C) instinct
(D) sensitization
Forager bees communicate the distance of a food source using a waggle dance upon return to the hive. It is observed that the number of waggles of a dance increases linearly with the distance to the food source. This tells us that the
(A) number of waggles and distance to food source is negatively correlated
(B) number of waggles and distance to food source is positively correlated
(C) number of waggles affects the distance to the food source
(D) number of waggles and the distance to the food source are uncorrelated
A non-venomous, non-toxic species of snake is brightly coloured and closely resembles a venomous snake species in the same habitat. This is most likely a case of
(A) Aggressive mimicry
(B) Batesian mimicry
(C) Masquerade
(D) Müllerian mimicry
The value of the resting membrane potential of a typical neuron is closest to the equilibrium potential of which of the following ions?
(A) Ca++
B) K+
(C) Mg++
D) Na+
In which of the following mating systems is sperm competition likely to evolve?
(A) Monoandry
(B) Monogamy
(C) Polyandry
(D) Polygyny
For a species, assuming a relatively short time scale and no evolution, increased interspecific competition will result in a
(A) larger fundamental niche
(B) larger realized niche
(C) smaller fundamental niche
(D) smaller realized niche
In which of the following plants is the dominant stage of the life cycle haploid?
(A) Cycads
(B) Ferns
(C) Gymnosperms
(D) Mosses
Natural populations often deviate from Hardy-Weinberg equilibrium. One possible reason for this is
(A) no migration
(B) no selection
(C) random mating
(D) small population sizes
Which of the following is NOT typically a characteristic of early successional pioneer plants relative to late successional plants in a tropical rain forest?
(A) Higher shade tolerance
(B) Smaller seed size
(C) Smaller size at maturity
(D) Wind dispersed seeds
Which of the following is NOT an example of phenotypic plasticity?
(A) Density-dependent swarming behavior in locusts
(B) Increase in DDT resistance in mosquitos
(C) Seasonal variation in plumage colouration in birds
(D) Temperature-dependent sex determination in turtles
Which of the following is NOT a characteristic of r-selected species?
(A) Early sexual maturity
(B) High juvenile mortality
(C) High parental care
(D) Large number of offspring
Which of the following is NOT essential for a behavioural trait to evolve by natural selection?
(A) The behavioural trait differs among individuals
(B) The behavioural trait is determined at least in part by genes
(C) The behavioural trait influences reproductive success
(D) The behavioural trait is determined entirely by genes
Consider a diploid population at Hardy-Weinberg equilibrium. For a locus with two alleles, the frequency of the A1A1 genotype is 0.01. The frequency of heterozygotes
A1A2 is (a) (answer up to 2 decimal places).
The latitudinal diversity gradient is defined as the decrease in the number of species from the equator to the poles. This can result from
(A) greater energy input at the poles
(B) greater land mass at the poles
(C) greater seasonal variation at the poles
(D) greater speciation rates at the poles
The figure below shows mean annual temperatures (°C) and mean annual precipitation (cm per year) from multiple sites in four regions in India.
From this climatic information, we can infer that P, Q, R, and S are LIKELY to be located in:
(A) P: Andaman, Q: Meghalaya, R: Ladakh, S: Rajasthan
(B) P: Ladakh, Q: Rajasthan, R: Andaman, S: Meghalaya
(C) P: Meghalaya, Q: Ladakh, R: Rajasthan, S: Andaman
(D) P: Rajasthan, Q: Andaman, R: Meghalaya, S: Ladakh
For a pair of interacting species, increased specialization and decreased niche breadth in both species would result in
(A) decreased intraspecific competition and increased interspecific competition
(B) decreased intraspecific competition and decreased interspecific competition
(C) increased intraspecific competition and increased interspecific competition
(D) increased intraspecific competition and decreased interspecific competition
A study examined the effect of neighbours on plants when grown at low or high altitudes. The researcher measured Relative Neighbour Effect (RNE), defined as: RNE = Biomass with neighbours – Biomass without neighbours.
The results shown above demonstrate
(A) competition at both altitudes
(B) competition at high altitudes, and facilitation at low altitudes
(C) competition at low altitudes, and facilitation at high altitudes
(D) facilitation at both altitudes
The plot below shows the fitness of two traits as a function of relative frequency of Trait-1 in the population. The solid line represents the fitness of Trait-1 and doted lines represents the fitness of Trait-2. Which of the following is most likely to be true?
(A) Either Trait-1 or Trait-2 will take over the population.
(B) Only Trait-1 will take over the population.
(C) Trait-1 and Trait-2 will always reach a coexistence equilibrium.
(D) Trait-1 and Trait-2 will oscillate over time.
P to T are islands of different sizes at different distances from the mainland, where the distance X<Y<Z. The area of island P>Q>R=S=T. Assuming that there is migration only from the mainland to islands and not between islands, which of the following is NOT true about the species richness on these islands?
(A) P>Q>R
(B) R>S>T
(C) Q>T>S
(D) S<Q<P
Most terrestrial ecosystems have a pyramidal structure of standing biomass across trophic levels where biomass of producers > primary consumers > secondary consumers > tertiary consumers.
However, some aquatic ecosystems have an inverted pyramidal structure where the standing biomass of producers < primary consumers. An explanation for this is:
(A) greater efficiency of primary consumers in aquatic ecosystems
(B) low turnover rates of aquatic producers relative to consumers
(C) low nutrient concentrations in aquatic ecosystems
(D) very high light limitation in aquatic ecosystems
