Biology 2005 Jamb Examination
Question 1
The organelle common to both plant and animal cells is the
B. plasmalemma
Both plant and animal cells have a plasmalemma (cell membrane), while centrioles are usually absent in plant cells, and cell wall and chloroplasts are absent in animal cells.
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Question 2
Which of the following is likely to have a higher concentration of the mitochondria?
A. Sperm cell
Sperm cells require a lot of energy for movement, so they have a higher concentration of mitochondria.
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Question 3
The hyphal wall of fungi is rigid owing to the
D. chitin
The rigidity of the hyphal wall of fungi is due to chitin, not cellulose or lignin.
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Question 4
Angiosperms and gymnosperms belong to the class
B. spermatophyta
Both angiosperms and gymnosperms are seed-bearing plants, hence they belong to the class Spermatophyta.
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Question 5
An example of radially symmetric organism is
B. Hydra
Hydra exhibits radial symmetry, while planaria, tapeworm, and roundworm are bilaterally symmetrical.
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Question 6
The leech and the earthworm belong to the
D. annelids
Both leech and earthworm are segmented worms, hence they belong to the phylum Annelida.
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Question 7
I. Rattus rattus II. Agama agama III. Bufo regularis IV. tilipia zilli
the order of evolutionary advancement to the above vertebrates is
D. IV, III, II, I
Evolutionary trend: fish (Tilapia) → amphibian (Bufo) → reptile (Agama) → mammal (Rattus).
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Question 8
From the diagram above the angle between the parts labelled II and III is the
D. axil
In plants, an axil refers to the angle where a leaf or branch joins the stem or another branch, and it's often the location where buds, and potentially new shoots or flowers, develop.
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Question 9
The part of the plant where photosynthesis is least likely to take place is
D. IV
The roots are generally the least suitable place for photosynthesis to occur because they are typically underground, lacking sunlight and the necessary chlorophyll for photosynthesis.
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Question 10
The stage in the life history of a moth responsible for the destruction of agricultural crops is the
D. caterpillar
The caterpillar (larval stage) of a moth feeds on and destroys agricultural crops.
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