Internal structure of a flowering plant - Jamb Biology Past Questions and Answers

Question 51:

• JAMB 1988

The radicle of a bean seedling grows most rapidly in the region

A. Of the root tip
B. Just above the root tip
C. Just around the root tip
D. Just below the root tip

Question 52:

• JAMB 1989

In dicotyledonous stem, each companion cell is founded beside the

A. Endodermal cell
B. Xylem vessel
C. Sieve tube
D. Pericyclic fibre

Question 53:

• JAMB 1989

If a healthy potted plant is continuously kept in dim light

A. The rate of respiration may equal that of photosynthesis
B. More carbondioxide and water are taken in
C. Respiration may be halted
D. The volume of oxygen released increase

Question 54:

• JAMB 1989

Wind pollinated flowers usually have

A. Rough pollen grains
B. Sticky stigmas
C. Small and short stigmas
D. Long styles

Question 55:

• JAMB 1990

If a ring of bark and phloem is removed from a stem, the

A. Plant dies immediately
B. Plant dies after two days
C. Movement of food is not affected
D. Movement of minerals is hardly affected