Quick Quiz
Questions ▼
Chemical Control and Coordination MCQ Questions. We covered all the Chemical Control and Coordination MCQ Questions along with answers in this post for free so that you can practice well for the exam.
Install our MCQTUBE Android app from the Google Play Store and prepare for any competitive government exams for free.
These types of competitive MCQs appear in exams like SSC CGL, CHSL, JE, MTS, Stenographer, CPO, Railway Group-D, NTPC, ALP, JE, RPF, Tech, Bank, Delhi Police Constable, UP Lekhpal, DSSSB, DDA ASO, BPSC Teaching, Defence, UPSSSC, UPSC (Pre), UPP, SI, UPTET, UPPCS, BPSC, BSSC, SBI, IBPS, LIC, State PCS, CDS, NDA, Assistant Commandant, and other Competitive Examinations, etc.
We also covered some other topics of chemistry like the introduction to the human body and health MCQ on our website for free.
You will get their respective links in the related posts section provided below.
Related Posts:
- Uneven Distribution of Natural Resources MCQ
- Introduction to Human Body MCQ
- Human Body and Health MCQ
MCQ on Chemical Control and Coordination for Students
The primary effect of gibberellins is to
a. increase the number of buds
b. enlarge the leaves
c. elongate dwarf plants
d. further elongate tall plants
Option c – elongate dwarf plants
A key role of cytokinins is to
a. boost flower production
b. increase auxin content
c. promote cell division
d. cause cell breakdown
Option c – promote cell division
Leaf and fruit fall in plants occurs due to the action of
a. Indole acetic acid
b. Naphthalene acetic acid
c. Gibberellins
d. Abscisic acid
Option d – Abscisic acid
A chemical used to eliminate dicot weeds is
a. Indole acetic acid
b. 2,4-D
c. Abscisic acid
d. Naphthalene acetic acid
Option b – 2,4-D
Which hormone helps minimize water loss in plants?
a. Gibberellins
b. NAA
c. Indole acetic acid
d. ABA
Option d – ABA
What happens if the coleoptile tip is cut and replaced?
a. Growth stops completely
b. New branches emerge
c. It grows as usual
d. No visible change
Option b – New branches emerge
The ability to respond to environmental stimuli is known as
a. Growth
b. Germination
c. Coordination
d. Irritability
Option d – Irritability
The brain and spinal cord form the
a. Sympathetic nervous system
b. Parasympathetic nervous system
c. Peripheral nervous system
d. Central nervous system
Option d – Central nervous system
Glial cells are primarily found in
a. Pia mater
b. Dura mater
c. Arachnoid membrane
d. Grey matter
Option d – Grey matter
The outermost protective layer of the brain is
a. Myelin sheath
b. Dura mater
c. Arachnoid membrane
d. Grey matter
Option d – Grey matter
The fluid present between brain membranes is
a. Lymph
b. Plasma
c. Cerebrospinal fluid
d. Serum
Option c – Cerebrospinal fluid
The middle layer of the brain’s protective covering is called
a. Dura mater
b. Pia mater
c. Arachnoid membrane
d. Pleura
Option c – Arachnoid membrane
The innermost brain membrane is the
a. Pleura
b. Dura mater
c. Pia mater
d. Arachnoid membrane
Option b – Dura mater
The part of a neuron often referred to as the nerve is the
a. Dendrites
b. Myelin sheath
c. Axon
d. Cyton
Option c – Axon
Neuron structures resembling a branched tree are
a. Axon
b. Cyton
c. Dendrites
d. Myelin sheath
Option c – Dendrites
Nerves that send signals from the brain or spinal cord to body parts are called
a. Sensory nerves
b. Afferent nerves
c. Dendrites
d. Efferent nerves
Option d – Efferent nerves
Nerves that bring signals from sense organs to the brain or spinal cord are
a. Dendrites
b. Motor nerves
c. Efferent nerves
d. Afferent nerves
Option d – Afferent nerves
In polio, which type of cells are damaged by the virus?
a. Monocytes
b. Red blood cells
c. Motor neurons
d. Sensory neurons
Option c – Motor neurons
Which cranial nerve is involved in regulating heartbeat?
a. Precaval
b. Postcaval
c. Aorta
d. Vagus
Option d – Vagus
The root’s growing region lies
a. At the tip
b. Just behind the tip
c. Between the nodes
d. In the lower stem
Option b – Just behind the tip
In plants, auxins are synthesized in the
a. Nodes
b. Petiole
c. Meristematic regions
d. Internodes
Option c – Meristematic regions
When the terminal bud is removed from a plant
a. It grows to usual height
b. Lateral shoots develop
c. The plant becomes taller
d. Roots fail to grow
Option b – Lateral shoots develop
Apical dominance refers to
a. Continuous growth of the terminal bud
b. Terminal bud suppressing lateral growth
c. Cutting off the stem tip
d. Equal development of terminal and side shoots
Option b – Terminal bud suppressing lateral growth
We covered all the chemical control and coordination MCQ questions above in this post for free so that you can practice well for the exam.
Check out the latest MCQ content by visiting our mcqtube website homepage.
Also, check out: