Plant Growth And Development Test-02

Plant Growth And Development Test-02

This is Plant Growth And Development Test-02 for CBSE class 11 Biology.. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Higher plants possess specific areas which take part in the formation of new cells. These area are called
  • A
    Collenchyma
  • B
    Permanent tissue
  • C
    Parenchyma
  • D
    Meristems
    Correct
2
Permanent and irreversible increase in dry weight, size, and mass, volume of cell, organ or organism is called
  • A
    Development
  • B
    Regeneration
  • C
    Differentiation
  • D
    Growth
    Correct
3
In dicotyledonous plants, girth of stem and root increase due to
  • A
    Differentiation
  • B
    Development
  • C
    Secondary growth
    Correct
  • D
    Primary growth
4
Mathematically arithmetic growth is expressed as
  • A
    \({L_t} = {L_0}{\text{ - }}rt\)
  • B
    \({L_t} = {L_0}.rt\)
  • C
    \({L_t} = {L_0} + {\text{ }}rt\)
    Correct
  • D
    \({L_t} = {L_0}/rt\)
5
It is the testing of a biological activity like growth response of a substance by employing a living material like plant or plant part.
  • A
    Separation
  • B
    Bioassay
    Correct
  • C
    Autopsy
  • D
    Fractionalisation
6
Exponential growth is dependent on
  • A
    Initial size, rate of growth and season
  • B
    Initial size, nutrient availability and time interval
  • C
    Plant type, initial size and time interval
  • D
    Initial size, rate of growth and time interval
    Correct
7
Which one is not a phase of Growth
  • A
    Formative phase
  • B
    Phase of maturation
  • C
    Linear phase
    Correct
  • D
    Phase of enlargement
8
The graphical representation of the total growth against time is called
  • A
    Growth curve
    Correct
  • B
    Growth graph
  • C
    Growth phase
  • D
    Growth table
9
If \({W_1}\) is the final size, \({W_0}\) is initial size, r is growth rate and t is time of growth than Exponential growth is represented by
  • A
    \({W_1} = {\text{ }}{W_0} - {e^{rt}}\)
  • B
    \({W_1} = {\text{ }}{W_0}.{e^{rt\;\;\;\;\;\;}}\)
    Correct
  • C
    \({W_1} = {\text{ }}{W_0}.{e_2}^{rt}\)
  • D
    \({W_1} = {\text{ }}{W_0}.{e^{rt2}}\)
10
Natural cytokinins are synthesized in Root apices Leaf Seeds Stem Natural cytokinins are synthesised in regions where rapid cell division occurs, for example, root apices.
  • A
    Leaf
  • B
    Seeds
  • C
    Stem
  • D
    Root apices
    Correct
11
Which one prevents premature fall of fruit?
  • A
    Zeatin
  • B
    NAA
    Correct
  • C
    GA1
  • D
    Ethylene
12
Which hormone is responsible for dormancy?
  • A
    Gibberellin
  • B
    Auxin
  • C
    ABA
    Correct
  • D
    Cytokinin
13
Auxin was isolated from tips of coloeptile of oat seedlings by
  • A
    F.W.Went
    Correct
  • B
    Miller
  • C
    E.Kurosawa
  • D
    Skoog
14
Auxins are mostly produced in
  • A
    Meristematic region
    Correct
  • B
    Shoot
  • C
    Leaf buds
  • D
    Root
15
Natural auxins among the following are: a) IAA, b) IBA, c) NAA and d) 2, 4 D
  • A
    a) and d)
  • B
    a) and b)
    Correct
  • C
    c) and d)
  • D
    b) and c)