WAEC Past Questions and Answers - Page 3998

19,986.

Which of the following are the final products of aerobic respiration?

A.

Water, carbondioxide, and energy

B.

Pyruvic acid, carbondioxide, and water

C.

Glucose, energy and urea

D.

Energy and carbondioxide

E.

Lactic acid, water, and carbondioxide

Correct answer is A

No explanation has been provided for this answer.

19,987.

One of the differences between plants and animals is that

A.

growth is indefinite in animals but definite in plants

B.

nutrition is autotrophic in plants but holophytic in animals

C.

in plants there are excretory systems but in animals waste products are stored away

D.

plants react slowly to external stimuli while animals react more quickly

E.

respiration takes place in animals but does not take place in plants

Correct answer is D

No explanation has been provided for this answer.

19,988.

Which of the following is not a cell organelle?

A.

Golgi body

B.

Nucleus

C.

Fat droplets

D.

Ribosome

E.

Endoplasmic reticulum

Correct answer is C

No explanation has been provided for this answer.

19,989.

A few drops of fehling’s solution was added to juice extracted from fresh maize grain and boiled. A red
precipitate was formed, indicating the presence of

A.

alcohol

B.

protein

C.

non-reducing sugar

D.

starch

E.

Endoplasmic reticulum

Correct answer is D

No explanation has been provided for this answer.

19,990.

Which of the following levels of organisation in living things is in the correct sequence, starting from the
most complex to the simplest?

A.

tissue → cell → organ → system

B.

System → organ → tissue → cell

C.

Cell → tissue → system → organ

D.

Cell → tissue → organ → system

E.

Organ → system → tissue → cell

Correct answer is B

No explanation has been provided for this answer.