Plant Growth and Development Test

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Plant Growth and Development Test - 67

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Weekly Quiz Competition

Question 1
1 / -0

The auxin commonly used in promoting rooting of cuttings is

A
NAAM

B
IBA

C
NAA

D
Both B and C

Solution

NAA is known as naphthalene acetic acid. It is a synthetic auxin which promotes rooting in dwarf plants or stem. It also decreases the rate of senescence and abscission. It promotes respiration and increases the rate of metabolism. It also increases the sweetening in certain fruits. It is used as a weedicide for mature monocots.
So, the correct answer is option C.
Question 2
1 / -0

Which growth regulator is associated with increasing the cell number?

A
Auxin

B
Gibberellin

C
Ethylene

D
Cytokinin

Solution

Auxins, a plant hormone is found in shoot and root tips. They promote cell division and thus increase cell number.
Question 3
1 / -0

Which one of the following correctly describes trichothallic growth?

A
Growth due to the activity of a single apical cell

B
Growth due to the activity of a group of apical cells

C
Growth due to intercalary meristematic activity of cells at the base of hairs

D
Growth due to the activity of marginal meristematic cells of a filament
Question 4
1 / -0

Application of which of the following hormones delays the onset of senescence in detached leaves?

A
Ethylene

B
Abscises acid

C
Gibberellins

D
Cytokine
Question 5
1 / -0

The precursor of Serine and Cytokine is?

A
Oxalocetate

B
$$3$$-phosphoglycerate

C
Phosphoenolpyruvate

D
Erythrose-$$4$$-phosphate
Question 6
1 / -0

The bioassay for gibberellins is?

A
Avena curvature test

B
Soyabean callus test

C
a-amylase induction test in barely aleurone cells

D
Barely leaf-disc test for chorophylls
Question 7
1 / -0

Which one of the following statements is not correct?

A
Roots produce gibberellins

B
The casparian strips in roots are involved in controlling the types of minerals that enter the xylem water starm

C
Lateral roots are initiated by cells division in the endodermis

D
When Rhizobium converts $$N_2$$ into nitrogenous compounds that are released into the host cells, energy is supplied by sugars from the legume roots cells
Question 8
1 / -0

How many following statements are correct for ethylene ?

1) Ethylene breaks the seed and bud dormancy
2) Ethylene promotes rapid petiole elongation in deep water rise plant
3) Ethylene promotes root growth and root hair formation
4) Ethylene promotes female flowers in cucumbers

A
1

B
2

C
3

D
4

Solution

Ethylene induces seed germination. It breaks seed and bud dormancy. So 1 is the right answer.
Question 9
1 / -0

Phytohormone responsible for overcome genetic dwarfism _________.

A
Auxin

B
Gibberellins

C
Cytokinins

D
ABA

Solution

Gibberellins is the hormone that overcome genetic dwarfism.
Question 10
1 / -0

Parthenocarpy has been introduced in eggplant by inserting a bacterial gene responsible for the synthesis of ______________.

A
Gibberellin

B
Cytokinin

C
Auxin

D
Abscis acid

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Plant Growth and Development Test - 67

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Plant Growth and Development Test - 67

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SHARING IS CARING

Question 1

NAAM

IBA

NAA

Both B and C

Solution

Question 2

Auxin

Gibberellin

Ethylene

Cytokinin

Solution

Question 3

Growth due to the activity of a single apical cell

Growth due to the activity of a group of apical cells

Growth due to intercalary meristematic activity of cells at the base of hairs

Growth due to the activity of marginal meristematic cells of a filament

Question 4

Ethylene

Abscises acid

Gibberellins

Cytokine

Question 5

Oxalocetate

$$3$$-phosphoglycerate

Phosphoenolpyruvate

Erythrose-$$4$$-phosphate

Question 6

Avena curvature test

Soyabean callus test

a-amylase induction test in barely aleurone cells

Barely leaf-disc test for chorophylls

Question 7

Roots produce gibberellins

The casparian strips in roots are involved in controlling the types of minerals that enter the xylem water starm

Lateral roots are initiated by cells division in the endodermis

When Rhizobium converts $$N_2$$ into nitrogenous compounds that are released into the host cells, energy is supplied by sugars from the legume roots cells

Question 8

1

2

3

4

Solution

Question 9

Auxin

Gibberellins

Cytokinins

ABA

Solution

Question 10

Gibberellin

Cytokinin

Auxin

Abscis acid

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