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Biology Past Questions and Answers

Topic: Internal structure of a flowering plant

Jamb Biology Questions - Internal structure of a flowering plant

Question 16:
A major limitation in the use of the potometer for measuring the rate of transpiration is that
  • A It is made of breakable glass materials
  • B It measures the rate of water intake
  • C It measure the rate of water loss throuh the stern only
  • D The movement of the air buble in the potometer cannot be timed accurately
View Answer & Explanation
Question 17:
Secondary thickening is initiated in a dicotyledonous stem by the
  • A Xylem parenchyma
  • B Secondary phloem
  • C Endodermis
  • D Cambium
View Answer & Explanation
Question 18:
Which of the plants is likely to have broad leaves and thin cuticle
  • A R
  • B S
  • C T
  • D U
View Answer & Explanation
Question 19:
Which of the following statements gives the BEST description of bark?
  • A Tissue outside the vascular cambium
  • B Cork-like tissue found only in stems
  • C Brown tissue never found in primary growth
  • D Cork-like tissues of old trees
View Answer & Explanation
Question 20:
Mineral salts can be absorbed into the roots by
  • A Osmosis only
  • B Osmosis and diffusion
  • C Diffusion and active transport
  • D Imbibition only
View Answer & Explanation