Characteristics of Plant Growth

Q.

'Both growth and differentiation in higher plants are open'. Comment.

Q. Find out the correct statement(s).
(a) Growth in plants is internal/intrinsic and open.
(b) Formation of cellular material is called real or protoplasmic growth.
(c) Plant growth is measurable.

1. Only (b) and (c)
2. (a), (b) and (c)
3. (b) only
4. Only (a) and (b)

Q. Which of the following represent(s) open form of growth?

1. Determinate growth
2. Both a and b
3. Indeterminate growth
4. None of the above

Q. Growth of pollen tube, leaf, fruit and bacteria are measured in terms of increase in _______________ respectively.

1. Girth, area, fresh weight and volume

2. Length, size, volume and dry weight

3. Diameter , thickness, weight and number

4. Length, area, volume, and cell number

Q.

Why is not any one parameter good enough to demonstrate growth throughout the life of a flowering plant?

Q. Plant growth is unique in being

1. closed
2. limited
3. unlimited
4. diffuse

Q.

Why is plant growth said to be unique?

Q.

Question 28:

1)Does the growth pattern in plants differ from that in animals? Do all the parts of plant grow indefinitely?

2)If not, name the regions of a plant, which can grow indefinitely.

Q.

‘Both growth and differentiation in higher plants are open’. Comment.

Q. Which of the following represent(s) open form of growth?

1. Determinate growth
2. Indeterminate growth
3. Both a and b
4. None of the above

Q. Find out the correct statement(s).
(a) Growth in plants is internal/intrinsic and open.
(b) Formation of cellular material is called real or protoplasmic growth.
(c) Plant growth is measurable.

1. Only (a) and (b)
2. (b) only
3. Only (b) and (c)
4. (a), (b) and (c)

Q. Match the following parameters of measurements of growth with their examples: $\begin{array}{cc}\text{i. Growth of pollen tube}& \text{1. Weight}\\ \text{ii. Growth of a leaf}& \text{2. Cell number}\\ \text{iii. Growth of a bacterial colony}& \text{3.Length}\\ \text{iv. Growth of a fruit}& \text{4.Surface area}\end{array}$

1. i-2, ii-3, iii-4, iv-1
2. i-4, ii-1, iii-3, iv-2
3. i-3, ii-4, iii-2, iv-1
4. i-2, ii-1, iii-4, iv-3

Q. Match the following parameters of measurements of growth with their examples: $\begin{array}{cc}\text{i. Growth of pollen tube}& \text{1. Weight}\\ \text{ii. Growth of a leaf}& \text{2. Cell number}\\ \text{iii. Growth of a bacterial colony}& \text{3.Length}\\ \text{iv. Growth of a fruit}& \text{4.Surface area}\end{array}$

1. i-2, ii-3, iii-4, iv-1
2. i-4, ii-1, iii-3, iv-2
3. i-3, ii-4, iii-2, iv-1
4. i-2, ii-1, iii-4, iv-3

Q.

Apical meristems are found at tips of

1. Root

2. Shoot

3. Both root and shoot

4. Cotyledon

Q. Mark the correct statement

1. Growth is internal
2. Growth is different in different parts of the body
3. Growth can't be reversed
4. All of the above

Q.

The lateral meristem in plant is reponsible for

1. Primary growth

2. Secondary growth

3. Exponential growth

4. Elongation

Q.

Apical meristems are found at tips of

1. Root

2. Shoot

3. Both root and shoot

4. Cotyledon

Q. Clinostat is the apparatus used to

1. Measure the rate of growth in plant
2. Measure the quantity of auxin in plant
3. Measure the effect of light on plant
4. Eliminate the effect of gravity or geotropism on plant

Q. Statements (A, B, C, D) in column I have to be matched with statements (p, q, r, s) in column II.

	List I		List II
A	Auxin	p	$G{A}_3$
B	Gibberellin	q	$IAA$
C	Cytokinin	r	ABA
D	Dormin	s	Zeatin

1. A-q, B-r, C-s, D-p
2. A-q, B-s, C-p, D-r
3. A-q, B-p, C-r, D-s
4. A-q, B-p, C-s, D-r

Q. The growth in plants is ...................

1. Limited
2. Unlimited
3. Unlocalised
4. None of these

Q. Plant growth is unique in being

1. closed
2. unlimited
3. diffuse
4. limited

Q. Which is a proper unit for measurement in microscopy?

1. Micron
2. Angstrom
3. Nanometre
4. All of the above.

Q.

Production of leaves and flowers is due to

1. Cortex

2. Lateral meristems

3. Intercalary meristems

4. Apical meristems

Q.

The lateral meristem in plant is reponsible for

1. Primary growth

2. Secondary growth

3. Exponential growth

4. Elongation