Jamb Biology Past Questions For Year 2021
Question 16
A freshwater plant such as water lily can solve the problem of buoyancy by the possession of?
- A. aerenchyma tissues
- B. dissected leaves
- C. thin cell walls of the epidermis
- D. water-repelling epidermis
Question 17
The appendicular skeleton is composed of the pectoral girdle?
- A. pelvic girdle, fore and hind limbs
- B. pelvic girdle and fore limbs
- C. lumbar vertebrae and pelvic girdle
- D. lumbar vertebrae, fore and hind limbs
Question 18
Which of the following is a measure for the control of bilharzia?
- A. Cutting low bushes around homes
- B. Application of molluscicides in water bodies
- C. Screening windows and doors with mosquito nets
- D. Application of herbicides in water bodies
Question 19
People who suck petrol with their mouths run the risk of increasing in their blood the concentration of
- A. iron
- B. lead
- C. calcium
- D. magnesium
Question 20
Which of the following is TRUE of the process of conjugation in Paramecium?
- A. Micronucleus disintegrates
- B. Each ex-conjugant divides only once
- C. Macro nucleus undergoes division
- D. Each micronucleus divides twice
