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BTN101
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Botany is the study of ________ (a) Plants
(b) Plant and uses (c) Plants and plant
products (d) Lower and higher.
________ are the smallest organisms (a)
Prions (b) Mycoplasma (c) Bacteria (d)
Viroids.
________ is an example of a disease
caused by prions (a) Coconut cadang
cadang (b) HIV (c) Lassa fever (d)
Scrapie .
All viruses contain ________ (a) DNA
(b) DNA and RNA (c) RNA (d) DNA or
RNA
Describe the cucumovirus
(a) Small
isomeric, RNA virus
(b) Naked
icosahedral RNA virus (c) Rod shaped,
helical, RNA virus.
Example of a filovirus is ________ (a)
Ebolavirus (b) Adenovirus (c) Small pox
(d) Hepatitis B.
The most studied viruses are ________ (a)
Viruses (b) Virods (c) Bacteriophages
(d) Prions.
The only characteristic demonstrated by
viruses which classifies it as living is
________ (a) Reproduction
(b)
Replication
(c) Recombination
(d)
Respiration.
Viruses are surrounded by a _______
consisting of a number of subunits called
_______ which are made up of smaller
particles called _______
The cross walls on fungal filaments are
called ________ (a) Septa (b) Setae (c0
Hyphae (d) Cellwall.
Fungi carry out ______ form of digestion
(a) Intracellular (b) Extracellular (c)
Phagocytic (d) All of the above.
The
division
Ascomycota
characteristically have _______ number of
spores. (a) One (b) Two (c) Four (d)
Eight.
_________ have no known sexual spores.
(a) Deutomycota (b) Ascomycota (b)
Bandiomycota (d) Zygomycota.
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A network of hyphae is called _______ (a)
Condia (b) Rhizoids (c) Mycelium (d)
Sclerotium.
Fungi store food as ________ (a) Floridean
(b) Glycogen (c) Starch (d) Paramylum.
Specialized fungal hyphae used to extract
nutrients from plants are called ________
(a) Mycelium (b) Haustoria (c) Sderotium
(d) Mycorrhizae.
The presence of frills/collarette is a
characteristic of ________ (a) Rhizopus (b)
Pilobolus (c) Mucor (d) Aspergillus.
Coenocytic hyphae results from ________
divisions. (a) Cytokinetic (b) Acytokinetic
(c) Continous (d) Replicative.
Eczema is caused by ________ (a) Candida
(b) Tinea (c) Agaricus (d) Pilobolus.
Cladosporium is found in ________ (a)
Mastigomycota
(b) Zygomycota
(c)
Deteromycota (d) Basidiomycota.
Spores in Ascomycota are found in a
structure called ________ (a) Ascos (b)
Ascus (c) Condida (d) Sporangiophore.
Fungi are ________ (a) Autotrophs (b)
Heterotrophs (c) Chemoautotrophs (d)
Phototrophs.
How many processes are involved in
bacteria recombination? (a) 2 (b) 4 (c) 5
(d) 3.
The gram staining technique was developed
by _______ in _______ (a) Gaham bell,
1859 (b) Cristian Gramm, 1884 (c)
Christian Gram, 1884 (d) Watson and
Crick, 1884.
Gram positive bacteria wall contains large
amount of _______ which makes them
resistant to staining and antibiotics. (a)
Peptidoglycans (b) Lipopolysaccharides (c)
Polypeptides (d) Phospholipids.
The secondary stain in Gram staining is
_______ (a) Crystal violet (b) 70% ethanol
(c) Gram’s iodine (d) Safranin.
Bacteria that convert dead organic remains
to ammonium ions are called _______ (a)
Sporophytes (b) Detritus (c) Thermophiles.
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Thiobacillus is an example of _______ (a)
Iron bacteria (b) Phosphate (c) Nitrogen
bacteria (d) Sulphur bacteria.
O2 is _______ in bacteria (a) Consumed
(b) Liberated (c) Converted (d) Neither
consumed nor liberated.
ATP in bacteria is derived from the
oxidation of _______ substances (a)
Inorganic (b) Organic (c) Decaying (d)
Synthetic.
Rhizobium is a _______ (a) Putrefying
bacteria (b) Denitrifying bacteria (c)
nitrogen fixing bacteria (c) Nitrifying
bacteria.
_______ remain in pairs after division
along one plane. (a) Diplococci (b)
Staphylococci
(c) Streptococci
(d)
Sarcinae.
The female spore can be called the
_______ (a) Microspore (b) Homospore
(c) Megaspore (d) Sporangium
Which of these is a feature of bryophytes?
(a) Bear cones (b) Require film of water
for fertilization (d)develop prothallus.
True mosses belong to class _______ (a)
Bryales (b) Anthoceropsida (c) Musci
(d) Hepatopsida.
_______ is an example of a leafy
liverwort. (a) Porella (b) Marchantia (c)
Riccia (d) Polytrichum.
Bryophytes have no _______ (a) Roots
and leaves (b) Protonema (c) True roots
(d) True leaves, and stem.
Liverworts posses _______ symmetry (a)
Dorsoventral (b) Radial (c) Axial (d)
Bilateral.
Elaters are found in _______
(a)
Liverworts (b) Hornworts (c) Bog mosses
(d) True mosses.
_______ distinguishes bryophytes from
algae (a) Presence of spores (b) Distinct
alternation
of
generation
(c)
Photosynthetic ability
(d) Oxygen
production.
Use the diagram below to answer questions 4144.
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The part labelled I is called (a) Capsule (b)
Calyptra (c) Sporangiophore (c) Spore.
The part labeled II is called the _______ (a)
Capsule (b) Calyptra (c) Sporangiophore
(d) Spore.
The part labeled III is called _______ (a)
Capsule (b) Seta (c) Sporangium (d) Stalk
The part labeled IV is _______
(a)
Independent
(b) Dependent
(c) Codominant (d) Recessive.
The following pigments are founding
bryophytes except _______ (a) Fucoxanthin
(b) Chlorophyll-A (c) Chlorophyll-B (d) βcarotene.
When a moss spore falls on a suitable
environment, it germinates to form a
_______ (a) Prothallus (b) Gametophytes
(c) Rhizod (d) Protonema.
The antheridium and archegonium are found
on the same game gametophyte in _______
(a) Riccia (b) Polytrichum (c) Funaria (d)
Barbula.
The flask-shaped structure in the
reproductive process of bryophytes is
_______ (a) Spore (b) Antheridium (c)
Archegonium (d) Sporangium.
_______ has differentiation into “stem” with
three rows of “leaves” (b) Riccia (b)
Porella (c) Polytrichum (d) Marchantia.
Pick the odd one out. (a) Pellia (b) Funaria
(b) Porella (c) Marchantia.
The study of algae is known as _______ (a)
Mycology (b) Algology (d) phycology.
Anabena and Nostoc belong to which group
of algae? (a) Bluegreen (b) Brown (c)
Yellow-green(d) Diatoms.
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Macrocystis belongs to which group of
algae?
(a) Brown
(b) Red
(c)
Dinoflagellates (d) Brown
A pigment unique to division xanthophyta
is _______
(a) Diadinoxanthin
(b)
Xanthophyll
(c) Fucoxanthin
(d)
Phycobillins.
Chrysophyta store carbonhydrate energy
as _______ (a) Floridean (b) Starch (c)
Glycogen (d) Leucosin.
Carragean, a stabilizing agent used in
industries is extracted from _______ (a)
Phaeophyta
(b) Rhodophyta
(c)
Pyrrophyta (d) Cyanobacteria.
Lichen is an association made up of (a)
Cyanobacteria
and
fungi
(b)
Cyanobacteria, algae and fungi (c) Algae
and fungi (d) Cyanobacteria, fungi and
higher plants.
_______ is an example of an antibiotic
made from bacteria (a) Chloramphenicol
(b) Tryptophan (c) Cephalosporin (d)
Penicillin.
All algae contain _______ in addition to
other pigments (a) Chlorophyll-b (b)
Chlorophyll-c
(c) Chlorophyll-a (d)
Phycoerythrin.
Diatoms are unicellular organisms of
division _______ and are characterized by
_______ cell wall (a) Chlorophyta, chitin
(b)
Chrysophyta,
cellulose
(c)
Rhodophyta,
mucopolymeric
(d)
Bacilliarophyta, silicified.
The enrichment of water bodies by
inorganic plant nutrients is called (a)
Algal bloom (b) Eutrophication (c)
Nutrification (d) Fertilization.
Nostoc belongs to the order _______ (a)
Hormogonales (b) Chlorococcales (c)
Centrales (d) Pennales.
_______ is an example under Division
Rhodophyta
(a) Aulacosela
(b)
Batrochospermum (c0 Ceratium (d)
Sargassum.
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Red tides are caused by _______
Cyanophyta
(b) Chrysophyta
Pyrrophyta (d) Rhodophyta.
(a)
(c)
Use the life cycle below to answer Questions 6567.
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The part labelled I is _______
(a)
Sporangiophore (b) Leaves (c) Strobillus
(d) Sporangium.
The part labelled III is _______ (a) Seed
(b) Root (c) Prothallus (d) Protonema.
The processes labelled II,IV and V
respectively are (a) Fertilization, meiosis,
maturation
(b) Meiosis, fertilization,
germination
(c) Meiosis, fertilization,
maturation
(d) Spore formation,
conjugation, development.
The most primitive and the most advanced
class of pteridophytes are _______ and
_______ respectively
(a) Lycopsida,
Pteropsida (b) Psilotopsida, Lycopsida (c)
Psilotopsida, Pteropsida (d) Psilotopsida,
Sphenopsida.
Lycopodium
show
characteristic
dichotomous branching, but some species
are _______ (a) Monopodial (b) Diploid
(c) Haplopodial (d) Bipodial.
Lycopodium posseses cripping rhizomes and
_______ roots (a) Tap (b) Butress (c)
Aerial (d) Adventitious.
The sporophyte in selaginella is _______ (a)
Homomorphic
(b) Heterosporous
(c)
Heterotrimeric (d) Homosporous.
The _______ stage of selaginella is more
complicated when compared to other
pteridophytes
(a) Sporophytic
(b)
Gametophytic
(c) Haploid
(d)
Sphenophytic.
Cyathea possesses a _______ and aerial
stem
(a) Slender
(b) Erect
(c)
Dichotomous (d) Tufted.
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The roots of most ferns are _______ (a)
Tap root or fibrous (b) Adventitious or
fibrous (c)Butress (d) Tap roots.
All the following are cryptogams except
_______ (a) Hibiscus (b) Psilotum (c)
Marchantia (d) Chlamydomonas.
Pick the add one out. (a) Heteromorphic
(b) Heterosporous (c) Homosporous (d)
Mega and microspore.
The leaves of ferns are mostly pinnately
compound and consist of two parts,
_______ and _______ (a) Frond, stipe (b)
Frond stalk (c) Frond, thallus (d) Stipe,
stalk.
Steles are differentiated according to the
relative positions of _______ and _______
and the presence or absence of _______
(a) Xylem, pith, phloem (b) cambium,
Xylem, Pith (c) Phloem, Xylem cambium
(d) xylem, phloem, pith.
One of the primitive characterisitics of
psilotum is _______ (a) Absence of
cambium (b) Heterospory (c) Aerial roots
(d) Presence of roots.
Gymnosperms female cones have _______
types of scales (a) 3 (b) 2 (c) 8 (d) 4.
The
medium
of
pollination
in
Gymnosperms is (a) Wind (b) Water (c)
Insects (d) Animal.
The embryo of Gymnosperms depends on
food stored by the (a) Embryo sac (b)
Sporophyte (c) Xylem (d) Gametophyte.
The
presence
of
cambium
in
Gymnosperms leads to___ (a) Phloem
formation (b) Secondary thickening (c)
Fertilization (d) Production of companion
cells.
The extinct group in the class cycadopsida
is (a) Taxales (b) Pentoxylales (c)
Cycadales (d) Coniferales.
Endosperm in gymnosperm is formed
from the _______ (a) Ovum (b) Definitive
nucleus
(c) vestigial prothallus
(d)
Vegetative lissue.
_______ is the only specie in existence in
its order. (a) Cycas revoluta (b) Ginkgo
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biloba
(c) Taxus bacata
(d) Cycas
circinalis.
Which of the following is correct? (a)
Gymnosperms are all vascular fruit plants
(b) Gymnosperms are all fruiting seed plants
(c) Gymnosperms are all fruitless seed
plants
(d) Gymnosperms are all nonvascular seed plants.
Why are male maiden-hair trees used as
ornamentals and not the female? (a) Female
bear foul-smelling seeds (b) Females bear
unattractive cones (c) Males are easily
propagated (d) Males bear foul-smelling
pollen.
Which of these best describes a seed? (a)
An immature ovule (b) A mature ovary (c)
An immature gametophyte (d) A mature
ovule.
Each sorus consists of several _______
which are protected by a kindey shaped
_______ (a) Spores, elater (b) Sporangia,
indusium (c) Sporophyll, strobilli (d) Sori,
Sporangia.
Cone-bearing trees are _______
(a)
Gnetophytes (b) Conifers (c) Cycas (d)
Pteridophytes.
The Christmas tree is a _______ (a)
Angiosperm
(b) Bryophyte
(c)
Pteridophyte (d) Gymnosperm.
Ginkgo biloba has been linked to drugs used
in improving _______ (a) Hair growth (b)
Skin colour (c) Height (d) Memory.
Xylem in Gymnosperms are made strictly of
(a) Companion cells (b) Vessels (c)
Tracheids (d) Rays.
When the calyx and corolla cannot be
differentiated, it is called a _______ (a)
Sepal
(b) Perianth
(c) Pedicel
(d)
Receptacle.
Dull or unattractive petals are called
________ (a) Petalloid (b) Sepallloid (c)
Epicalyx (d) polypetalous.
One of the following distinguishes
spermatophytes from other members of the
plant kingdom (a) Production of extensive
root system (b) Presence of Pollen tube and
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seeds (c) poor Vascular system (d) Partial
dependence on water for fertilization
The structure in cryptogams homologous
to the pollen sac of phanerogams is (a)
Microspore (b) stamen (c) Carpel (d)
Microsporangium.
A developed ovary can be referred to as
(a) Seed (b) Fruit (c) Endosperm (d) Ovule
One of the two core processes in double
fertilization is (a) Formation of Pollen tube
(b) Fusion of Male nucleus with the ovule
(c) Fusion of the male nucleus with
synergids (d) formation of micropyle
Flowers
and
secured
seeds
are
characteristics
of
_______
(a)
Gymnosperms (b) Angiosperms (c) Giant
ferns (d) Pteridophytes
The seed formed as a result of fertilization
is_________ (a) Haploid (b) Aneuploid (c)
Diploid (d) Haplo-diploid.
The endosperm formed as a result of
double-fertilization is ______(a) Haloid
(b) Triploid (c) Haplo-diploid (d) Diploid
Parallel venation, fibrous or adventitious
foots are features of (a) Gymnosperms (b)
Monocotyledons (c) Dicotyledons (d)
Cryptogams
______ is an example of the non-essential
part of a flower (a) Calyx (b) Androecium
(c) Gynoecium (d) Carpel
Pick the odd one out (a) Carpel (b) Pistil
(c) Stamen (d) Gynoecium.
_____ is an example of a dioecious plant
(a) Pawpaw (b) Maize (c) Millet (d)
wheat.
A hermaphrodite flower is represented
by______ (a) + (b) ♀ (c) ♂
(d)
(109) Figure (a) is a _____ (a) Hypogenous ovary
(b) inferior (c) incomplete ovary (d)
epigenous ovary
(110) Figure (b) is a ____ (a) Hypogenous ovary
(b) superior ovary (c) incomplete ovary (d)
epigenous ovary.
(111) The parts labelled I and II are (a) Pedicel
and epicalyx (b) Ovary and receptacle (c)
Stigma and receptacle (d) receptacle and
Perianth.
(112) An actinomorphic flower is bisexual with
five free sepals, five fused petals which are
fused to ten free stamen, having one inferior
ovary. Give the floral formular _________
(113) Ocimum gratssimum “efinrin” is used for
curing _______ (a) Diabetes (b) Anaemia
(c) Cough (d) Sore throat.
(114) The botanical name for “Dongoyaro tree” is
_____ (a) Zingiber officinale (b)
Azadirachta indica (c) Vernonia amygdalina
(d) Zanthoxylum xanthoziloides
(115) The only Nigerian drug extracted from
plants is called (a) ARTEMISIN (b)
`NICOSAN (c) SEPTRIN (d) FANSIDAR.
Use the diagram to answer questions
109 – 111 .
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