Practice Post UTME ESUT biology 2021 Past Questions

Question 1

The diagram below shows the structure of a plant cell. Which part is responsible for photosynthesis?

A. Mitochondria

Correct B. Chloroplast

C. Cell Wall

D. Vacuole

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 2

A population of bacteria is growing exponentially. If the initial population is 100 and the growth rate is 20% per hour, what will be the population after 3 hours?

A. 1600

B. 2000

Correct C. 2400

D. 3000

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 3

The diagram below shows a cross-section of a human eye. Which part is responsible for detecting light?

A. Cornea

B. Iris

Correct C. Retina

D. Lens

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 4

A species of bird has a wing span of 2 meters. If the wing span is directly proportional to the square root of the bird's weight, what is the weight of the bird?

A. 10 kg

B. 20 kg

Correct C. 30 kg

D. 40 kg

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 5

The diagram below shows a simple e\cosystem. Which part is responsible for decompo\sing organic matter?

A. Producer

B. Consumer

Correct C. Decomposer

D. Nutrient Cycler

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 6

In a population of Drosophila melanogaster, the frequency of the recessive allele 'a' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the homozygous dominant genotype 'AA'?

A. 0.36

Correct B. 0.64

C. 0.36

D. 0.64

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 7

A researcher is studying the effect of pH on the growth of Escherichia coli. The researcher measures the growth of the bacteria in different pH levels and plots the data on a graph. What is the type of graph that the researcher would use to represent the data?

A. Bar graph

Correct B. Line graph

C. Scatter plot

D. Histogram

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 8

A species of bird has a unique mating system where the male and female birds mate for life. What is the term for this type of mating system?

Correct A. Monogamy

B. Polygyny

C. Polyandry

D. Promiscuity

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 9

A researcher is studying the effect of temperature on the growth of a microorganism. The researcher measures the growth of the microorganism at different temperatures and plots the data on a graph. What is the type of graph that the researcher would use to represent the data?

A. Bar graph

Correct B. Line graph

C. Scatter plot

D. Histogram

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 10

A species of plant has a unique adaptation where it can survive in extreme temperatures. What is the term for this type of adaptation?

A. Crypsis

B. Camouflage

C. Thermogenesis

Correct D. Cold hardiness

Correct Answer: D

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 11

In the context of hormonal coordination, what is the primary function of the hypothalamus?

A. Regulation of body temperature

Correct B. Stimulation of the pituitary gland

C. Inhibition of the adrenal gland

D. Regulation of appetite

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 12

Asexual reproduction in plants can occur through what process?

A. Mitosis

B. Meiosis

C. Budding

Correct D. Fragmentation

Correct Answer: D

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 13

In the context of digestion, what is the primary function of the pancreas?

A. Production of bile

Correct B. Production of digestive enzymes

C. Absorption of nutrients

D. Storage of nutrients

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 14

In the context of growth and regulation, what is the primary function of the thyroid gland?

A. Production of insulin

B. Production of growth hormone

Correct C. Regulation of metabolism

D. Regulation of body temperature

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 15

In the context of photosynthesis, what is the primary function of the chloroplast?

A. Production of glu\cose

B. Production of oxygen

Correct C. Absorption of light energy

D. Storage of nutrients

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 16

In a population of Drosophila melanogaster, the frequency of the recessive allele 'a' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the homozygous dominant genotype 'AA'?

Correct A. 0.36

B. 0.64

C. 0.16

D. 0.04

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 17

A 2.0 M solution of HCl is mixed with a 2.0 M solution of NaOH. If the reaction is complete, what is the pH of the resulting solution?

A. 0

Correct B. 1

C. 2

D. 3

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 18

A plant with the genotype 'Tt' is crossed with a plant with the genotype 'tt'. What is the probability that the offspring will have the genotype 'TT'?

Correct A. 0.25

B. 0.5

C. 0.75

D. 0.9

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 19

A 10.0 mL sample of 0.1 M HCl is mixed with a 10.0 mL sample of 0.1 M NaOH. What is the pH of the resulting solution?

A. 0

Correct B. 1

C. 2

D. 3

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 20

A population of Drosophila melanogaster has a frequency of the recessive allele 'a' of 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the homozygous recessive genotype 'aa'?

A. 0.36

B. 0.64

Correct C. 0.16

D. 0.04

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 21

A 2.0 M solution of HCl is mixed with a 2.0 M solution of NaOH. If the reaction is complete, what is the concentration of the resulting solution?

A. 0.5 M

Correct B. 1.0 M

C. 2.0 M

D. 4.0 M

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 22

A plant with the genotype 'Tt' is crossed with a plant with the genotype 'tt'. What is the probability that the offspring will have the genotype 'Tt'?

A. 0.25

Correct B. 0.5

C. 0.75

D. 0.9

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 23

A 10.0 mL sample of 0.1 M HCl is mixed with a 10.0 mL sample of 0.1 M NaOH. What is the pH of the resulting solution?

A. 0

Correct B. 1

C. 2

D. 3

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 24

In a tropical rainforest e\cosystem, the primary consumers are primarily herbivores that feed on the abundant plant life. Which of the following is a characteristic of the primary consumers in this e\cosystem?

Correct A. They have a high metabolic rate to quickly digest their food.

B. They have a slow reproductive rate due to the high competition for resources.

C. They are primarily carnivores that feed on the abundant insect life.

D. They have a large body size to store energy for long periods.

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 25

The nervous system of an organism is responsible for transmitting signals from sensory receptors to the brain. Which of the following types of neurons is primarily responsible for this function?

A. Motor neurons

Correct B. Sensory neurons

C. Interneurons

D. Glial cells

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

POST UTME ESUT 2021 Biology | Objective

Master the Exam!

Help others prepare! Share this practice hub: