Plant vascular system - Jamb Biology Past Questions and Answers

Question 6:

• JAMB 1979

Which of these tissue serves the function of support and water conduction

A. Parenchyma
B. Collenchymas
C. Sclerenchyma
D. Xylem
E. Phloem

Question 7:

• JAMB 1979

Root hair have their origin from

A. Endodermis
B. Pericycle
C. Cortex
D. Epidermis
E. Xylem

Question 8:

• JAMB 1980

If the bark and phloem tissue of a woody shoot are peeled off by ringing, the whole plant will die eventually die because?

A. Water does not reach the leaves
B. Water and salts remained below the ring portion
C. There is a withdrawal of water from the root by soil
D. Manufactured food does not reach the roots
E. The roots store too much water

Question 9:

• JAMB 1983

In woody plants, grass and water vapour are transported across the stems by the

A. Xylem fibres
B. Medullary rays
C. Sieve tubes
D. Phloem fibres
E. Phloem parenchyma

Question 10:

• JAMB 1985

In an angiosperm leaf, the xylem is

A. Beside the phloem
B. Surrounded by trhe phloem
C. Above the phloem
D. Around the phloem
E. In separate bundles from the phloem