Growth

Q. (a) Arithmetic growth

Q. Growth in plants _______.

1. ceases after organ formation
2. is not influenced by the environment
3. is of the open form
4. is restricted to apices only

Q. Which of the following statements is/are true with respect to plant growth?

1. The root and stem of a plant are descendents of a single cell

2. Leaves and fruits show indeterminate growth

3. Plant development includes both growth and differentiation

1. 1 only
2. 1 and 2
3. 3 only
4. 1 and 3

Q.

Define growth, differentiation, development, dedifferentiation, redifferentiation, determinate growth, meristem and growth rate.

Q. Define geometric growth.

Q.

A ball of snow when rolled over snow increases in mass , volume and size. Is this comparable to growth as seen in living organisms? Why?

Q.

Is egg a living or non-living thing?

Q.

define living organisms?

Q. Which of the following cells permanently enter into G${}_0$ Phase ?

1. All cells of animals
2. Nerve cells
3. Parenchyma cells
4. Meristematic cells

Q.

Plant growth is open type of growth.Discuss?

Q.

Match the following columns related to phases of growth

$\begin{array}{cc}\text{Column-I}& \text{Column-II}\\ \text{A.Meristematic phase}& \text{1.Cells attain maximum size}\\ \text{B.Elongation phase}& \text{2.Constant state of cell division}\\ \text{C.Maturation phase}& \text{3.Cells acquire protoplasm}\end{array}$

1. A - 2, B - 1, C - 3

2. A - 3, B - 2, C - 1

3. A - 1, B - 3, C - 2

4. A - 2, B - 3, C - 1

Q. How does cytokinesis happen in plant and animal cells ? Correlate the division with the terms centripetal and centrifugal.