Jamb Biology 2021 Past Questions and Answers

Question 11:

• JAMB 2021

I. Rattus rattus.
Il. Agama agama
III. Bufo regularis
IV. Tilapia zillii

The order of evolutionary advancement of the above vertebrates is?

A. I, II, III, IV
B. I, IV, III, II
C. II, III, IV, I
D. IV, III, II, I

Question 12:

• JAMB 2021

Which of the following produces both hormones and enzymes?

A. Ileum
B. Pancreas
C. Gall bladder
D. Kidney

Question 13:

• JAMB 2021

The correct sequence of the movement of urea during urine formation is?

A. Glomerulus ---> Bowman's capsule -> convoluted tubule ---> Henle's loop -> collecting- tubule
B. Glomerulus -> Bowman's capsule -> convoluted tubule -> Henle's loop -> convoluted tubule -> collecting tubule
C. Convoluted tubule -> glomerulus --> Nettle's loop -> Bowman's capsule->collecting tubule
D. Convoluted tubule -> Bowman's capsule -> Henle's loop -7> glomerulus -> collecting tubule

Question 14:

• JAMB 2021

The order of passage of food in the digestive system is

A. Ileum --> caecum ->large intestine -> rectum
B. Ileum --> colon --> caecum -> rectum
C. Large intestine --> ileum -> caecum -> rectum
D. Colon -> caecum -> ileum -> rectum

Question 15:

• JAMB 2021

The correct sequence for the perception of smell in mammals is?

A. Chemicals --> olfactory nerve endings --> brain
B. Dissolved chemicals --> nasal sensory cells --> brain
C. Chemicals --> mucus membrane sensory cells --> brain
D. Dissolved chemicals --> sensory cells --> olfactory nerve --> brain