Jamb Biology Questions - Living organisms
Question 56:
Refrigeration, as a method of preservation, has ONE of the following characteristics:
- A Kills all the bacteria
- B Kill most of the bacteria
- C Makes the bacteria inactive
- D Dries food
- E Hydrolyses food
Question 57:
In man, identical twins occur when
- A An ovum is fertilized by a sperm and then divide into two, each forming a separate embryo
- B An ovum fertilized by two sperms and then divides into two, each forming an embryo
- C Two ova are fertilized at the same tine each forming an embryo
- D Two ova are fertilized by a single sperm each forming an embryo after fertilization
- E One ovum first divides into two and each half is fertilized by a sperm before developing into an embryo
Question 58:
Which of the following tissue are made up of dead cells?
- A Meristematic
- B Xylem vessels
- C Cambium
- D Mesophyll
- E Palisade
Question 59:
A pyramid of numbers can be defined as
- A The number of plants and animals in an ecosystem
- B An arrangement of organism according to their habitat
- C The numerical relationships of a food chain
- D The number of plants and animals in a population
- E The total number of species and general in a community
Question 60:
In man, spermatozoa are never found in the
- A Testis
- B Urethra
- C Epididymis
- D Prostrate glands
- E Vas deferens