Jamb Biology Past Questions For Year 1999
Question 11
The structure that is most commonly identified in all living cells under the light microscope is the
- A. mitochondrion
- B. chloroplast
- C. nucleus
- D. ribosome
Question 12
Substance manufactured by the leaves are transported to other parts of the plant through the
- A. phloem
- B. companion cells
- C. sieve tubes
- D. cambium
Question 13
In the woody stems, gaseous exchange takes place through the
- A. micropyles
- B. stomata
- C. lenticels
- D. vessels
Question 14
In plant cells, the chloroplast are located
- A. inside the cell wall
- B. outside the protoplasm
- C. within the vacuole
- D. within the cytoplasm
Question 15
They key event in the transition of the amphibians from water to land is the
- A. replacement of the gills with lungs
- B. possession of webbed limbs
- C. development of long hing limbs
- D. possession of tympanic membrane
