Q. Study the following statements of plants growth I. One single maize root apical meristem can give rise to more than 17500 new cells per hour II. A cell in watermelon can increase its size up to 3,50,000 times III. Growth of pollen tube is measured in the terms of its length IV. Growth in dorsiventral leaf is measured in terms of an increase in its surface area Choose the correct option
A) I and II
B) II and III
C) III and IV
D) I, II, III and IV
Explanation
One single maize root apical meristem can give rise to more than 17,500 new cells per hour, whereas cells in watermelon may increase in size by up to 3,50,000 times. In the former, growth is expressed as an increase in cell number; the later expresses growth as an increase in size of the cell. While the growth of a pollen tube is measured in terms of its length, an increase in surface area denotes the growth in a dorsiventral leaf
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.