Plant Growth And Development Test

Plant Growth And Development

This is Plant Growth And Development Test-01 for CBSE class 11 Biology.. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
How many cells per hour does a single maize root apical meristem can give?
  • A
    17,500
    Correct
  • B
    1,75,000
  • C
    175
  • D
    1,750
2
The process of despecialisation of differentiated cells so that they become undifferentiated and meristematic is called
  • A
    Differentiation
  • B
    Development
  • C
    Dedifferentiation
    Correct
  • D
    Dedifferentiation
3
The undifferentiated mass of parenchymatous cells are called
  • A
    Cambium
  • B
    Callus
    Correct
  • C
    Carotenoids
  • D
    Cytokinesis
4
The correct sequence leading to the growth curve
  • A
    lag, log, stationary phases
    Correct
  • B
    stationary,log,lag phases
  • C
    log,lag , stationary phases
  • D
    lag,stationary,log phases
5
Auxins are generally produced in
  • A
    Phloem
  • B
    xylem
  • C
    leaves
  • D
    root and shoot tips
    Correct
6
The differentiated cellshave lost the capacity to divide can regain the capacityof division under certain conditions called as
  • A
    De differentiation Differentiation Re differentiation Maturation
    Correct
  • B
    Re differentiation
  • C
    Differentiation
  • D
    Maturation
7
Measurement and the comparison of total growth per unit time is called
  • A
    Geometric growth rate
  • B
    Arithmetic growth rate
  • C
    Absolute growth rate
    Correct
  • D
    Relative growth rate
8
Which of the following events are arranged in correct order?
  • A
    Differentiation,growth,development
  • B
    Development,differentiation,growth
  • C
    Growth,development,differentiation
  • D
    Growth,differentiation,development
    Correct
9
All changes that an organism goes through during its life cycle is called as
  • A
    Maturation
  • B
    Development
    Correct
  • C
    Elongation
  • D
    Differentiation
10
The phenomenon of heterophyll is an example of
  • A
    Redifferentiation
  • B
    Plasticity
    Correct
  • C
    Development
  • D
    Senescence
11
Auxanometer is used to measure
  • A
    Leaf number
  • B
    Growth in breadth
  • C
    Growth length Growth in breadth Pest population Leaf number
    Correct
  • D
    Pest population
12
Maximum growth occurs in
  • A
    Stationary phase
  • B
    Leg phase
  • C
    Exponential phase
    Correct
  • D
    Senescent phase
13
Which growth is also called apparent growth?
  • A
    Irreversible decrease in mass and volume
  • B
    Irreversible increase in mass or volume
    Correct
  • C
    Reversible decrease in mass and volume
  • D
    Reversible increase in mass and volume
14
S-shaped graph produced on plotting growth against time is called
  • A
    Geometric line
  • B
    Arithmetic growth line
  • C
    Sigmoid growth curve
    Correct
  • D
    Relative growth curve
15
The point at which exponential phase ends and decelerating phase begins is called
  • A
    Compensation point
  • B
    Relaxation point
  • C
    Saturation point
  • D
    Inflexion point
    Correct