Ordinary level 2023 northwest regional mock biology 1
Ordinary level 2023 northwest regional mock biology 1
Section 1(Seven questions)
Question 1-7
Direction:Each of these questions or incomplete Statements
is followed by four suggested answers. Select the best
answer in each case and mark the answer slice!
appropriately.
1. A secretion released into the alimentary canal winch docs
not contain enzymes but speeds up fat digestion:
a) Intestinal juice
b) Bile
c) Pancreatic juice
d) Saliva
2. Ifa joint allows movement in tuiy directionTt is called:
n) Rotating joint:
b) Sliding joint
c) Hinge joint
_
d) Ball and socket joint_
3. Two body organs where reabsorption of water occurs
include:
—
nitrogen
r—H
41 B
\P 1
Nitrogen in \
Nitrogen in plants animals
Nitrate in the soil *
Which process is represented by the arrow 3?
a) Denitrification
b) Decay
c) Lightning
d) Feeding
12.in the vertical section ofthe mammalian eye which structure
contains a high concentration of cones?
a) Sclera
b) Choroid
c) Fovea
d) Blind spot
13.This concerns the section
through the kidney below
a) Colon and kidney
b) Kidney and liver
c) Liver and duodenum
d) Duodenum and colon
4. Which of tlie following statements about exhalation is true?
a) Intercostal muscles contract moving ribs upward
and outward.
b) Diaphragm contracts and flattens.
c) Volume ofthoracic cavity decreases.
d) Pressure in thoracic cavity decreases
5. In Fungi, which of the following is the main component of
the cell wall?
*•
a) Lipids
b) Cellulose
c) Chitin
d) Sugars
The structure labeled 7 is the:
a) Pelvis
b) Ureter
c) Urethra
d) Pyramid
14. The structure that helps
the breadmould to adhere to its substrate is:
a) Rhizoids
b) Roots
c) Stolons
d) Sporangiosphore
Below is the diagram
ofthe mammalian
skin
6. A natural unit composed oflivingand non-living m&m
components whose interaction results in stable and selfperpetuating system is an example of:
a) A community
b) A biome
c) An ecosystem
d) A biosphere
7. What is transpiration?
a) Rise of water up the stem ofa plant
b) Form ofrespiration in plants
c) Secretion of water essential for photosynthesis.
d) Loss of water vapour from the leaves ofplants
E Section 11(Thirteen questions)Questions 8-20
Directions:This group of questions relates to biological
diagrams, select the best answer for each question.
ft
sr
8. In the diagram ofthe mammalian kidney, ultrafiltration
occurs in the.
a) Bowman’s capsule
b) Loop of Henle
c) Collecting duct
d) Glomerulus
9. Which pan of the flower conveys the male gamete to the
ovary?
m 15. Whichnumbered stricture secretes sebum?
a) 1
b) 2
c) 3
d) 4
Below is a diagram of
the human
respiratory system
%
16.
a) Style
b) Pollen Tube
. c) Stigma
d) Anthers
10.1he structure ofthe fish that helps it to detect changes in
water is:
fi..t|’
S|
V .
w? *
m
a) Lateral line
b) Eyes
c) Fins
d) Ear
