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生物科(十九)
#19
BIOLOGY
Revision Test 3 Part 11
卓唐慕情·
MC en Insects, fish & frog )
Animals are divided into divis-
ions based on similarities which are termed characteristic Which one of the following is NOT a characteristics of insects?
a. Body divided into head, tho-
rax and abdomen.
b. Exoskeleton made of chitin.
c. One pair of antennae,
d. Thorax consists of 3 seg-
ments each bearing a pair. of legs and a pair of wings. e. Abdomen do not bear legs
or wings,
2. Bees and butterflies have 2
pairs of wings. Which state= | ment best decribes these wings? a. Both pairs are thick & tough, b. Both pairs are always fully
extended.
c. Both pairs are never used.
in flight.
d. The posterior pair is re-
duced.
e. The anterior pair is used to
protect the posterior pair. The compound eyes & simple eyes are different in that:-
a
they are blind & do not form any images.
b. they have many lenses which
form mosaic amages." they are sensitive to a change in light intensi ty only.
d. they form many images of an object focissed on.
e. they are movable.
4. As insects grow, they increage. in size. To accommodate this, the outer shell must be shed
& replaced with a new one, this process is called:-
a. moulding
b. moulting
c. metamorphosis
d. pupation
e. growth movement
Which insect does not have.
complete metamorphosis? a. Hive Bee
b. Cockroach e. Mosquito a. Housefly
e. Butterfly
b: Moulting or ecdysis is the
term applied to the shedding of the insects' exoskeleton and this occurs during the larval stage as it is a period of rapid growth. Cockroach is the one which does not pass through egg, larva, pupa and imago stages, It shows imcomplete metamor- phosis since its eggs deve- lop into nymphs which resem- ble the adult except that they have no wings yet nor are their sex organs fully developed.
6. di Fins of fish in general
contribute to movement, and balance. The paired fins aid in controlling pitch, yawing and balance. The pectoral fins' main funct- ion is to aid in elevation. The nostrils of fish play. no part in respiration. only work they do is to aid the sense of smell.
7.
The
8. e: Eggs must be left in warn
places for hatching and they should not be disturbed while they are doing so.
Thus they are usually found in dark corners of cupboards and even under drawers.
9. e: Poikilothermic ( cold-blooded)
is a characteristic of Pisca(fish). It means that their body temperature raises or lowers with that of the surrounding temperature. Thus environmental climatic conditions would affect. its physiological processes. 10,c: In close contact with the
fine gill filaments are the capillaries of the blood & it is there that an exchange. of gases occur between the water and the blood. 11.e: The tongue of a frog is
forked, flexible, muscular, sticky & rooted anteriorly. Thus it enables the frog to shhot out the tongue for a sudden kill.
12.b One mode of respiration of
the frog is cutaneous resp. whereby its skin aids in gaseous exchange.
13.at Life on land renuires agility
in movement, thus frogs have powerful hind limbs which
During this period, respiration
is carried out by the:-
2. lungs
b. skin
c. gills
d mouth
e. nose
The adaptation of frog to life on land are:-
a. having a pair of lungs &
powerful hind limbs.
b. having a pair of lungs &
■ streamlined body.
c. having a pair of lungs. &
powerful forelimbs.
d. having a pair of powerful
hind limbs & a streamlined body.
having webbed toes & a streamlined body.
The number of digits in the fore and hind limbs of frogs
are-
a. 5 & 4
b. 4 & 5%
c. 5.& 5.
d. 4 & 4
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5 & 10
15. During mating season, male
frogs croake and develop horney pads on the fore limb. It's found:-
a. in the position of the thumb b. in the position of the
first digit.
c. in the position of the second digit.
d. in the position of the
third digit.
in the position of the
fourth digit.
Answers and explanations: 1. d: On each segment there is
a pair of leg but insects have, at the most, two pairs: of wings. ( flies & mosquito have one pair only; fleas have none.)
e: Since the posterior pair
is beneath the anterior pair when not in motion, the latter offers some form of protection to the former.
3. b: Compound eyes consists of
numerous optical units, each with its own lens & retinal cells. The vision thus is. known as mosaic vision, each unit forming an image of PART of the object in view and all the separate images fit together to form e ..whole.
6.· The main function of the pec-
toral fine is:-
a. balancing
b. pitching.
c. yawing
d. elevation. e. propulsion
The terms nose & nostrils ar
"often confused. Fish have
nostrils which
2. are sensitive to smell.
enable respiration to be carried out.
absorb oxygen from water. are connected to the buccal cavity.
e. can be closed by valyes, Cockroaches are unwelcomed tenanta in most homes. Where are their eggs most likely to be found?"
a. On the surface of walls. b. Under carpets...
c. In the rubbish bins. d."Among clothes.
e. In dark corners of cupboard Fish is described as poikilo- thermic, this means:-
a. they have a constant body
temperature.
they hibernate in cold: season.
their body temperature is lower than that of their surrounding.
their body temperature is higher than that of their surrounding.
their body temperature varies with that of the surrounding,
10. Which part of the gill of
fish is responsible for gaseous exchange?
a
gill arch
b. gill rakers
c. gill filaments
d. gill operculum
e. all parts of the gill
11. Frogs use their tongue to aid,
the trapping of insects. This is possible because their tongue is:-
a. forked anteriorly
b. rooted anteriorly
c. flexible
d. sticky
e. a,b,c and d are all true. 12. Being amphibians, frogs are
poikilothermic and spend. long periods being inactive.
them to jump and leap while lungs enable them to breathe. in air.
14.b: The forelimb of frogs only
have 4 digits, the thumb being absent.
15.a: The horny pads enable the
male frog to grip hold of the female during mating as the process may take a long time.
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