Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Botany 1 > 13 Plant Growth & Development > Flashcards

13 Plant Growth & Development Flashcards

1
Q

Growth at a __ level is principally a consequence of increase in the amount of protoplasm

  1. Tissue Level
  2. Organ Level
  3. Cellular Level
  4. Organism Level
A

Cellular Level

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Growth of pollen tube, dicot leaf are measured respectively in

  1. Number of cells, surface area
  2. Length, surface area
  3. Surface area, increase in size
  4. Only number of cells
A

Length, Surface area

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Growth is defined as

  1. Increase in size only
  2. Increase in shape only
  3. Increase in weight only
  4. Permanent irreversible increase in size which occurs in cells or organs or organisms.
A

Permanent irreversible increase in size which occurs in cells or organs or organisms.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

A primary root grows from 5 cm to 19 cm in a week. The absolute and relative growth rates of the root respectively are

  1. 2cm/day and 40%
  2. 4cm/day and 20%
  3. 14cm/day and 30%
  4. 7cm/day and 15%
A

2cm/day and 40%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

The cells of which region has conspicuous nuclei

  1. Meristematic
  2. Division phase
  3. Maturation
  4. Elongation
A

Meristematic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Maximum size in terms of cell wall thickenings are seen in region of

  1. Meristems
  2. Division phase
  3. Maturation
  4. Elongation
A

Maturation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Which of the following is not the characteristic of a cell of meristematic region

  1. Rich in protoplasm and possess large conspicuous nucleus
  2. Cell walls are primary in nature
  3. Increased vacuolation
  4. Abundant plasmo desmatal connections
A
  1. Increased vacuolation
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

In organs of plants there is a variation in rate of growth. It is first slow, then accelerated up to maximum and slows down to stand still. The period of vigorous growth is known as

  1. Lag phase
  2. Senescent phase
    3.Stationary phase
  3. Log phase
A

Log Phase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

An irreversible or permanent increase in size, mass or volume of a cell, organ or organism is called as _____

  1. Growth
  2. Differentiation
  3. Dedifferentiation
  4. Development
A

Growth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

In geometric method, if one meristematic cell divides three times then the number of meristematic cells formed are

  1. 8
  2. 1
  3. 4
  4. 2
A

8

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

In arithmetic method, if one cell divides, count the number of daughter cells after three divisions are

  1. 8
  2. 1
  3. 4
  4. 2
A

4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Exponential phase in growth is characterized by

  1. Enlargement of cells
  2. Constant increase in growth rate
  3. Maturation of cells
  4. Constant decrease in growth rate
A
  1. Constant increase in growth rate
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

The growth in plants differs from growth in animals

  1. Being localized and definite
  2. Being indefinite
  3. Having indefinite life span
  4. Having definite life span
A
  1. Being indefinite
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Senessence is

  1. Terminal irreversible phase of aging
  2. Combined deteriorative processes in mature plant
  3. a period between complete maturity and final death of an organ
  4. All of the above
A
  1. All of the above
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

The maximum growth rate occurs in

  1. Exponential phase
  2. Lag Phase
  3. Stationary phase
  4. Senescence phase
A
  1. Exponential phase
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

If we plot the parameter of growth against time the curve obtained during geometric growth is know as

  1. T Shaped curve
  2. U Shaped curve
  3. G Shaped curve
  4. S Shaped curve
A
  1. S Shaped curve
17
Q

Emergence of radicle and plumule from seed is called

  1. Fragmentation
  2. Scarification
  3. Germination
  4. Dormancy
A

Germination

18
Q

The kind of growth in which both the daughter cells formed after each mitotic division retain the capacity to divide is called as

  1. Arithmetic growth
  2. Geometric growth
  3. Absolute growth
  4. Relative growth
A
  1. Geometric growth
19
Q

Calculate the number of generations of divisions that occured when 32 cells are formed from a single cell by geometric method

  1. 4
  2. 5
  3. 16
  4. 31
A

5

20
Q

A phase where growth slows down due to limited nutrient supply is

  1. Stationary phase
  2. Lag phase
  3. Log phase
  4. Both 1 & 3
A
  1. Stationary phase
21
Q

Cells of the meristematic region can be identified by

  1. Vacuolated protoplasm
  2. Small nuclei
  3. Thick cell wall
  4. Ability to divide actively
A
  1. Ability to divide actively
22
Q
A

Botany 1 (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions