Plant Growth and Development Test

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Plant Growth and Development Test - 1

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following cause increase in the girth of the plant organ in which they are active?

a. Vascular cambium
b. Root apical meristem
c. Cork cambium
d. Shoot apical meristem

A
Only a and b

B
Only a and c

C
Only a and d

D
Only b and c

Solution

Vascular cambium and cork cambium cause increase in the girth of the plant organ in which they are active.
Question 2
1 / -0

Which of the following statements is/are false?

a. In dicotyledonous plants and gymnosperms, the lateral meristems appear very early in life.
b. Plant growth is accompanied by both anabolic and catabolic processes.
c. The ability of plants for unlimited growth throughout life is due to the presence of meristems at certain locations in their body.

A
Only a

B
Only a and b

C
Only b

D
Only b and c
Question 3
1 / -0

Growth is measured by a variety of parameters. In a single maize root apical mersitem, growth is expressed as the

A
increase in size of the cell

B
increase in fresh weight

C
increase in surface area

D
increase in cell number
Question 4
1 / -0

The period of growth is divided into three phases. Which of the following is not a property of the cells of meristematic phase?

A
The cell walls are primary in nature, thin and cellulosic.

B
The cells have abundant plasmodesmatal connections.

C
The cells are rich in protoplasm.

D
Cells enlarge in this phase.
Question 5
1 / -0

Which of the following statements is/are false regarding the phase of maturation?

a. The cells in this phase attain their maximal wall thickening.
b. The cells in this phase attain their maximal protoplasmic modifications.
c. The cells in this phase have increased vacuolation.

A
Only a

B
Only a and b

C
Only b

D
Only c

Solution

The cells have increased vacuolation in elongation phase.

Question 6

1 / -0

Match the following:

Medium of growth of plants	Function
a. Water	1. It helps in releasing metabolic energy essential for growth activities.
b. Oxygen	2. It is required by plants for the synthesis of protoplasm and it acts as a source of energy.
c. Nutrient	3. It provides the medium for enzymatic activities that is needed for growth.

a - 3, b - 1, c - 2

a - 2, b - 1, c - 3

a - 1, b - 3, c - 2

a - 1, b - 2, c - 3

Solution

Water provides the medium for enzymatic activities that is needed for growth. Oxygen helps in releasing metabolic energy essential for growth activities. Nutrient is required by plants for the synthesis of protoplasm and it acts as a source of energy.

Question 7
1 / -0

During differentiation, the cells undergo structural changes. Which of the following changes do(es) not occur in differentiation?

a. The cells lose their protoplasm.
b. The cells regain the capacity of division under certain conditions.
c. The cells develop a very strong, elastic lignocellulosic secondary cell wall.

A
Only a

B
Only a and b

C
Only b

D
Only b and c

Solution

The cells regain the capacity of division under certain conditions in dedifferentiation.
Question 8
1 / -0

Both intrinsic and extrinsic factors control the development in plants. Which of the following factors are intrinsic?

a. Temperature
b. Nutrition
c. Genetics
d. Growth regulators

A
Only a and b

B
Only a and c

C
Only a and d

D
Only c and d

Solution

Both genetic and growth regulators are intrinsic factors that control the development in plants.
Question 9
1 / -0

Which of the following statements is/are false?

a. Heterophylly in cotton and coriander is an example of plasticity.
b. Cells positioned away from root apical meristems differentiate as root-cap cells.
c. The growth of the given system per unit time expressed as per unit initial parameter is called the absolute growth rate.

A
Only a

B
Only a and b

C
Only b

D
Only c

Solution

The growth of the given system per unit time expressed as per unit initial parameter is called the relative growth rate.
Question 10
1 / -0

Match the following:

Plant growth regulators Examples

a. Adenine derivative 1. Abscisic acid

b. Derivative of carotenoids 2. Kinetin

c. Terpenes 3. Gibberellic acid

A
a - 3, b - 1, c - 2

B
a - 3, b - 2, c - 1

C
a - 1, b - 2, c - 3

D
a - 2, b - 1, c - 3

Solution

An example of adenine derivative is kinetin. An example of derivative of carotenoids is abscisic acid. An example of terpene is gibberellic acid.

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Plant growth regulators	Examples
a. Adenine derivative	1. Abscisic acid
b. Derivative of carotenoids	2. Kinetin
c. Terpenes	3. Gibberellic acid

Plant Growth and Development Test - 1

Result

Plant Growth and Development Test - 1

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Question 1

Only a and b

Only a and c

Only a and d

Only b and c

Solution

Question 2

Only a

Only a and b

Only b

Only b and c

Question 3

increase in size of the cell

increase in fresh weight

increase in surface area

increase in cell number

Question 4

The cell walls are primary in nature, thin and cellulosic.

The cells have abundant plasmodesmatal connections.

The cells are rich in protoplasm.

Cells enlarge in this phase.

Question 5

Only a

Only a and b

Only b

Only c

Solution

Question 6

a - 3, b - 1, c - 2

a - 2, b - 1, c - 3

a - 1, b - 3, c - 2

a - 1, b - 2, c - 3

Solution

Question 7

Only a

Only a and b

Only b

Only b and c

Solution

Question 8

Only a and b

Only a and c

Only a and d

Only c and d

Solution

Question 9

Only a

Only a and b

Only b

Only c

Solution

Question 10

a - 3, b - 1, c - 2

a - 3, b - 2, c - 1

a - 1, b - 2, c - 3

a - 2, b - 1, c - 3

Solution

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