Which of the following organelles is common to both plant and animal cells
پاسخ دهید
(C)
Cell membrane
2
The sections in X and Y respectively, are
پاسخ دهید
(B)
transverse and longitudinal
3
The fruit that has the illustrated sections is a
پاسخ دهید
(A)
hesperidium
4
The structure labelled I is associated with
پاسخ دهید
(B)
asexual reproduction
5
The structure labeled II is the
پاسخ دهید
(D)
sporangium
6
Which of the following statements about the structure labeled III is correct?
پاسخ دهید
(A)
secretes digestive enzymes into the substrate
7
The level of organization of the organism is
پاسخ دهید
(B)
cell
8
The organism belongs to the Phylum
پاسخ دهید
(C)
Euglenophyta
9
A plant cell placed in a solution with a higher water potential will
پاسخ دهید
(B)
enlarge and become turgid.
10
Offspring formed by sexual reproduction exhibit more variation than those formed by asexual reproduction because
پاسخ دهید
(B)
gametes of parents have different genetic composition
11
Radius and ulna are bones of the?
پاسخ دهید
(D)
lower arm
12
The blood vessel which carries blood from the alimentary canal to the liver is the?
پاسخ دهید
(C)
hepatic portal vein
13
The diagram above is an illustration of the longitudinal section of a mammalian organ. Study it and answer this question.
Which of the labeled parts is the cortex?
پاسخ دهید
(D)
IV
14
The diagram above is an illustration of the longitudinal section of a mammalian organ. Study it and answer this question.
What is the main function of the organ?
پاسخ دهید
(A)
Excretion
15
Detoxification of urea takes place in the?
پاسخ دهید
(C)
liver
16
Which of the following hormones is suddenly secreted into the bloodstream of a frightened person?
پاسخ دهید
(B)
adrenaline
17
The temperature control centre in mammals is located in the?
پاسخ دهید
(B)
hypothalamus
18
The diagram above is an illustration of a type of eye defect in humans. Study it and answer this question.
The eye defect illustrated in the diagram is?
پاسخ دهید
(D)
myopia
19
The diagram above is an illustration of a type of eye defect in humans. Study it and answer this question.
The eye defect can be corrected by the use of?
پاسخ دهید
(B)
concave lens
20
How many gametes are produced in the pollen grain of a flowering plant before fertilization?
پاسخ دهید
(B)
two
21
Which of the following organisms does not undergo incomplete metamorphosis?
پاسخ دهید
(C)
butterfly
22
An enzyme reaction may begin to decline when?
پاسخ دهید
(B)
the ph of the medium is altered
23
The diagram above is an illustration of the growth of a plant in a water culture. After a few days, the solution turned green and the plant died. Use this to answer this question.
What precaution should have been taken to prevent the solution from turning green?
پاسخ دهید
(C)
cover the culture vessel with opaque paper
24
The diagram above is an illustration of the growth of a plant in a water culture. After a few days, the solution turned green and the plant died. Use this to answer this question.
The death of the plant was likely caused by?
پاسخ دهید
(C)
algal growth in the solution that used up the nutrients
25
Which of the following factors is not necessary for photosynthesis?
پاسخ دهید
(C)
wind
26
Autotrophic nutrition is a process whereby an organism obtains food
پاسخ دهید
(B)
by synthesizing simple substances using energy
27
The process that takes place at the light stage of photosynthesis is?
پاسخ دهید
(A)
splitting of water molecules to form hydrogen ions
28
The diagram above is an illustration of the foot of an animal.
The adaptation of this type of foot is that it is?
پاسخ دهید
(B)
used as a paddle for swimming
29
The following organisms are examples of carnivorous plants except.
پاسخ دهید
(A)
gloriosa
30
Plants and animals of an ecosystem make up a?
پاسخ دهید
(C)
community
31
Rabbits cannot survive in an aquatic habitat because they have
پاسخ دهید
(B)
no gills
32
The illustration below is a food chain.
Grass→grasshopper→domestic fowl→hawk
What would happen if the population of domestic fowl decreases?
پاسخ دهید
(C)
grasshoppers would increase
33
Which of the following features is a characteristic of aquatic plants possession of ?
پاسخ دهید
(D)
succulent stem
34
An association between living organisms in which one organism lives on and feeds at the expense of the other organism is known as?
پاسخ دهید
(C)
parasitism
35
When a large number of organisms share limited resources, the result is?
پاسخ دهید
(D)
competition
36
Which of the following behaviours is correctly matched with the corresponding diseases?
