Biology questions and answers

Biology Questions and Answers

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.

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1.

Mycobacterium leprae causes leprosy, Corynebacterium diphtheria causes diphtheria and Vibrio comma causes

A.

tetanus

B.

influenza

C.

cholera

D.

typhoid

Correct answer is C

Vibrio cholerae (also Kommabacillus) is a gram negative comma-shaped bacterium with a polar flagellum that causes cholera in humans.

2.

Ptyalin is an enzyme produced in the

A.

salivary glands

B.

pituitary glands

C.

thyroid glands

D.

pancreas

Correct answer is A

No explanation has been provided for this answer.

3.

Nitrogen is fixed in ecosystems in ways stated below. Which one of the statements below is false?

A.

By cyanobacteria

B.

By electrical discharges in the atmosphere

C.

By industrially synthesised fertilizer

D.

By denitrification

Correct answer is D

No explanation has been provided for this answer.

4.

Pollen grains in plants are produced in

A.

roots

B.

leaves

C.

flower

D.

stem

Correct answer is C

No explanation has been provided for this answer.

5.

Pollination by wind is called

A.

anemophily

B.

hydrophily

C.

zoophily

D.

entomophily

Correct answer is A

No explanation has been provided for this answer.

6.

Mutation is

A.

a factor responsible for plant growth

B.

a change which affects the offspring of F2 generation only

C.

a change that is inherited

D.

a change which affects the parents

Correct answer is C

No explanation has been provided for this answer.

7.

Oxyreductases, transferases, hydrolases, lyases, isomerases and ligases are all classes of

A.

hormones

B.

enzymes

C.

proteins

D.

vitamins

Correct answer is B

No explanation has been provided for this answer.

8.

Plants that grow under average temperature and moisture are called

A.

halophytes

B.

hydrophytes

C.

mesophytes

D.

xerophytes

Correct answer is C

No explanation has been provided for this answer.

9.

One day you wake with a sore throat and a runny nose. Your doctor takes a swab from your throat, sends it to a lab, and telephones you the next day to say that antibiotic will not help you get better. Which of the following is the most likely reason for the doctor's statement?

A.

Having waited a day, it is too late to take an antibiotic

B.

You need an antiseptic, not an antibiotic

C.

You need to be vaccinated instead of taking an antibiotic

D.

You are infected by a virus

Correct answer is D

No explanation has been provided for this answer.

10.

Nymph is the name of young one of

A.

butterfly

B.

beetle

C.

housefly

D.

cockroach

Correct answer is D

No explanation has been provided for this answer.