1995 - WAEC Biology Past Questions and Answers - page 1

1
At what level of organisation is Amoeba?
A
Tissue
B
Organ
C
Cellular
D
System
correct option: c
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2
Which of these could be regarded as an advantage of complexity in higher organisms?
A
there is no cellular differentiation
B
Cellular differentiation leads to loss of independence of the cells
C
Complexity stops at cellular differentiation only
D
Cellular differentiation leads to internal structural specialization
correct option: d
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3
Which of the following organisms is one-celled and free-living?
A
Volvox
B
Spirogyra
C
Rhizopus
D
Chlamydomonas
correct option: d
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4
One of the differences between plant and animal cells is that in plants
A
'cells have less distinct outline, but animal cells have distinct outline
B
ell wall is made of cellulose, but animal cell wall is made of chitin
C
large vacuoles are absent, but present in animals
D
plastids are absent, but present in animals
correct option: e
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5
Carbondioxide enters the stomata during photosynthesis through the process known as
A
osmosis
B
active transport
C
diffusion
D
inhalation
correct option: c
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6
Which of the following groups carry out similar functions in living things?
A
Vertebral column, chitin, and guard cells
B
Sclerenchyma, cartilage and chitin
C
Tendon, chitin and neurone
D
Collenchyma, Intercellular spaces and blood vessels
correct option: b
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7
Which of the following statements is correct?
A
biceps muscles has its origin on the head of the humerus
B
biceps muscle is inserted at the ulna
C
triceps muscle originated at the scapula and head of the humerus
D
ulna is pulled up when the biceps is relaxed
correct option: c
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8

Which of the following pairs of tissues is responsible for strengthening the plant?

A
Phloem and Epidermis
B
Parenchyma and Cambium
C
Collenchyma and Sclerenchyma
D
Collenchyma and Cambium
correct option: c

Collenchyma cells have thin primary walls with some areas of secondary thickening. Collenchyma provides extra mechanical and structural support, particularly in regions of new growth. Sclerenchyma cells have thick lignified secondary walls and often die when mature. Sclerenchyma provides the main structural support to a plant.

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9
Which of the following is not a tissue found in plants?
A
Epidermis
B
Phloem
C
Xylem
D
Dermis
correct option: d
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10
Higher organisms use a transport system and not diffusion only to distribute nutrients because
A
the ratio of their surface area to volume is small
B
metabolic waste products diffuse to the surface of the organisms
C
the rate at which nutrients and other substances diffuse increases
D
substances to be transported move shorter distances to reach the numerous cells
correct option: a
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