How well do you understand living things and their vital processes? Whether you are preparing for JAMB, WAEC, NECO and Post-UTME, these Biology past questions and answers cover such subjects as the chemistry of life, botany, evolution, genetics, ecology etc to help you know what to expect, improve your speed and confidence and be really prepared for the actual aptitude test.
In the illustration above, the genotypes of the offsprings are
1 heterozygous smooth : 2 homozygous smooth : 1 wrinkled
1 homozygous smooth : 2 heterozygous smooth : 1 wrinkled
2 homozygous smooth : 2 wrinkled
3 heterozygous smooth : 2 wrinkled
Correct answer is B
The diagram above refers to a PUNNETT SQUARE used in predicting the probable genotypic and phenotypic ratios of a cross. looking at the diagram, we have the ratio
SS : Ss : sS : ss and from the question, we see the genotypic composition is;
1 homozygous smooth : 2 heterozygous smooth : 1 wrinkled
This lower jaw is typical of a
sheep
rabbit
dog
cat
Correct answer is A
No explanation has been provided for this answer.
Which of the labelled parts is the diastema?
2
3
4
6
Correct answer is B
No explanation has been provided for this answer.
The function of the structure labelled G is to
carry out initial photosynthesis for the seedlings
protect the young leaves from mechanical damage
protect the young leaves from sun light
protect the young leaves from insects pest
Correct answer is A
No explanation has been provided for this answer.
In H, the cotyledons are carried above the soil because
the epicotyl grows faster than the hypocotyl
the hypocotyl grows faster than the epicotyl
both grow at the same rate
the epicotyl outgrow the radicle
Correct answer is B
No explanation has been provided for this answer.