Question 1 of 20 110 total questions
The part of the ear that is concerned with balance is the
A semi-circular canals
B incus
C malleus
D Eustachian tube
The elephant grass is propagated vegetatively by means of
A corms
B bubils
C suckers
D stolons
The type of placentation shown in the figure above is a
A parietal
B marginal
C axile
D free-central
Fruits which develop without fertilization are described as
A simple
B pathencorpic
C aggregate
D compound
During mammalian embryo development, large amounts of oestrogen and progesterone are produced in the
A umbilical cord
B amnion
C placenta
D amniotic fluid
Muscles are indirectly attached to bones by means of
A ligaments
B membranes
C tendons
D sutures
Etiolation is caused by the influence of
A minerals salt
B water
C carbondioxide
D light
Excretory products responsible for the red, purple and blue colours of flowers are called
A alkaloid
B tannins
C anthocyanins
D resins
Transpiration can be measured with a
A photometer
B hygrometer
C potometer
D barometer
If a ring of bark and phloem is removed from a stem, the
A plant dies immediately
B plant dies after two days
C movement of food is not affected
D movement of minerals is hardly affected
The vilius in the small intestine is significant because it
A increase the surface area for absorption
B increase the surface area for digestion
C assists in mixing digested food
D assists in filtering undigested food
The organ which secretes digestive enzymes as well as hormones is the
A liver
B salivary gland
C pancreas
D spleen
Which of the following food substance will produce a brick-red colour when warmed with Benedict's solution?
A Glucose
B Starch
C Egg white
D Maltose
The first step in the process of photosynthesis is the
A activation of the chlorophyll
B photolysis of water
C reduction of carbondioxide
D formation of sugar
The mode of nutrition in which digestion is extracellular is
A holophytic
B parasitic
C holozoic
D saprophytic
Which type of the following cells is thin-walled and living at maturity?
A Collenchyma
B Sieve tube
C xylem vessel
D sclerenchyma
which of the following disease is rarely spread by a housefly?
A Yellow fever
B Dysentry
C Typhoid fever
D Poliomyelitis
The nephridia in the earthworm form part of the
A reproductive system
B respiratory system
C circulatory system
D excretory system
A feature which adapts birds to flight is the possession of
A scaly legs
B light bones
C two walking legs
D a pointed beak
In the tapeworm the suckers on the scolex are used for
A sucking the blood of the host
B holding fast to the host
C reproduction
D locomotion
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