Plant Growth and Development Test

Result

Plant Growth and Development Test - 4

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

Seed germination is the sprouting of a seed due to growth and development of its embryo to form a seedling. Which of the following is a favourable external condition for the germination of a seed?

A
Viability

B
Optimum temperature

C
Sufficient storage of food

D
Nondormancy or completion of dormancy

Solution

Optimum temperature in the range of 25 - 35 degree Celsius is a favourable external condition for the germination of seeds.
Question 2
1 / -0

Which of the following statements is/are false?

a. Vivipary is the germination of a seed while it is attached to the parent plant and is being nourished by it.
b. Geometric growth is a type of growth in which the rate of growth is constant and increase in growth occurs in arithmetic progression.

A
Both the statements are true.

B
Both the statements are false.

C
Statement 'b' is true and 'a' is false.

D
Statement 'a' is true and 'b' is false.

Solution

Arithmetic growth is a type of growth in which the rate of growth is constant and increase in growth occurs in arithmetic progression.
Question 3
1 / -0

Which of the following meristems contribute(s) cells for elongation of a plant parallel to its axis?
a. Lateral meristem
b. Root apical meristem
c. Shoot apical meristem

A
Only a

B
Only b and c

C
Only a and c

D
Only a and b

Solution

Root apical meristem and shoot apical meristem contribute cells for elongation of a plant parallel to its axis.
Question 4
1 / -0

In which of the phases of plant growth, are new cells produced by mitotic divisions of the meristematic tissue and occurs at root apex, shoot apex and other regions having meristematic tissues?

A
Formative phase

B
Phase of enlargement

C
Phase of differentiation

D
None of these

Solution

In the formative phase, new cells are produced by mitotic divisions of the meristematic tissue and occurs at root apex, shoot apex and other regions having meristematic tissues.
Question 5
1 / -0

Which of the following is not a mode of measurement of growth of a plant?

A
Increase in volume

B
Increase in diameter

C
Increase in surface area

D
Increase in water content

Solution

This is the correct option as increase in water content is not a mode of measurement of growth of a plant.
Question 6
1 / -0

Compounds which inhibit the activity of auxin are called antiauxins. Which one of the following is an antiauxin?

A
IAA-aspartic acid

B
2,4-dichlorophenoxy acetic acid

C
2, 3, 5-triiodobenzoic acid

D
IBA-alanine

Solution

2, 3, 5 triiodobenzoic acid is an antiauxin. It acts as an antiauxin by blocking the transport of auxin.
Question 7
1 / -0

Auxins are weakly acidic growth hormones having an unsaturated ring structure. Which of the following is not a function of auxin?

A
Stem and leaf growth

B
Respiration

C
Metabolism

D
Cell enlargement

Solution

This is the correct option as stem and leaf growth is not a function of auxin. It is a function of gibberellins.
Question 8
1 / -0

Gibberellins are weak acidic growth hormones having gibbane ring structure. Which of the following is not a use of gibberellins?

A
Fruit growth

B
Parthenocarpy

C
Overcoming dormancy

D
Prevention of lodging

Solution

This is the correct option as it is not a use of gibberellins. Prevention of lodging is a use of auxin. 1-Naphthaleneacetamide (NAA) prevents lodging or falling of crop plants during windy season.
Question 9
1 / -0

Gibberellins are plant growth regulators that cause increased internodal length of genetically dwarf plants. Which one of the following is a characteristic of gibberellins?

A
Gibberellins have a single or double unsaturated ring structure and a side chain.

B
Gibberellins bring about apical dominance.

C
The transport of gibberellins is both basipetal and acropetal.

D
Gibberellins have a feminising effect in some plants.

Solution

as this is a characteristic of gibberellins. The transport of gibberellins is both basipetal and acropetal.
Question 10
1 / -0

Cytokinins are plant growth hormones that promote cytokinesis. Which of the following is not a function of cytokinin?

A
Differentiation

B
Sex expression

C
Resistance

D
Root initiation

Solution

Ethylene helps in root initiation, growth of lateral roots and root hairs.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Plant Growth and Development Test - 4

Result

Plant Growth and Development Test - 4

Score

-

Rank

-

SHARING IS CARING

Question 1

Viability

Optimum temperature

Sufficient storage of food

Nondormancy or completion of dormancy

Solution

Question 2

Both the statements are true.

Both the statements are false.

Statement 'b' is true and 'a' is false.

Statement 'a' is true and 'b' is false.

Solution

Question 3

Only a

Only b and c

Only a and c

Only a and b

Solution

Question 4

Formative phase

Phase of enlargement

Phase of differentiation

None of these

Solution

Question 5

Increase in volume

Increase in diameter

Increase in surface area

Increase in water content

Solution

Question 6

IAA-aspartic acid

2,4-dichlorophenoxy acetic acid

2, 3, 5-triiodobenzoic acid

IBA-alanine

Solution

Question 7

Stem and leaf growth

Respiration

Metabolism

Cell enlargement

Solution

Question 8

Fruit growth

Parthenocarpy

Overcoming dormancy

Prevention of lodging

Solution

Question 9

Gibberellins have a single or double unsaturated ring structure and a side chain.

Gibberellins bring about apical dominance.

The transport of gibberellins is both basipetal and acropetal.

Gibberellins have a feminising effect in some plants.

Solution

Question 10

Differentiation

Sex expression

Resistance

Root initiation

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.