Jamb Biology Past Questions For Year 2021
Question 36
Blood circulation in a mammal is said to be double because?
- A. it passes twice through the heart in a complete circuit
- B. it moves in both arteries and veins
- C. it circulates in both the heart and other organs
- D. the heart contains auricles and ventricles
Question 37
If both parents are heterozygous for a trait. the probability that an offspring will be recessive for that trait is?
- A. 1/2
- B. 1/4
- C. 1
- D. 3/4
Question 38
The mutation theory of organic evolution was propounded by?
- A. Gregor Mendel
- B. Hugo de Vries
- C. Jean Lamarck
- D. Charles Darwin
Question 39
The movement of part of a plant in response to external stimulus of no particular direction is?
- A. taxism
- B. tropism
- C. haptotropic movement
- D. nastic movement
Question 40
The most abundant group of organisms in the animal kingdom?
- A. Mammalia
- B. Aves
- C. Insecta
- D. Annelida
